1 Introduction

The United States has a long history of fiscal federalism. It began as a collection of independent states in the late eighteenth Century and evolved over the course of the years, including the major upheavals of the Revolutionary War, the Civil War, and the Great Depression into being one of the foremost examples of a federation, both economically and politically. Unlike other federations, where the central government has devolved expenditures and revenue responsibilities to states or regions, the power to impose and collect taxes by the federal government was agreed upon by the founding states when the US Constitution was ratified in 1789. The Constitution (and subsequent amendments) allowed broad taxing powers for the federal and state governments, while also limiting access to certain types of taxes for one level of government or another, for example, states cannot impose tariffs and the federal government cannot impose property taxes. Over the years, the federal government has expanded significantly, but the independence of the states and their fiscal autonomy have persisted.Footnote 1

There are three layers of government, one central (the federal government), 50 regional governments (the states), and thousands of local governments. The federal government has three branches: the executive branch (headed by a directly elected president), the legislative branch (the senate with two senators per state and the congress with 435 representatives distributed according to population), and the judicial branch (with the US Supreme Court being the highest court in the country). The term of the president is four years, the term of a senator is six years, and the term of a representative is two years. The governor is the elected executive of a state and, except for Nebraska, which has a unicameral, each state has both a senate and a house. Local governments have elected executives and boards or councils. There are general-purpose local governments, e.g., cities and counties, and special purpose local governments, e.g., school districts and library districts.

The federal government puts few restrictions on state taxes, preserving the states’ revenue-raising authority and discretion, which is evident in the large diversity across the states in sources of revenue. This diversity is also present on the expenditure side, as states spend significantly different amounts per capita on education, healthcare, transportation, and other categories. This diversity across the states, documented in detail below, is a distinct characteristic of the fiscal federalism system in the US, not found in most other federations.

Local governments are creatures of the states and the states have exercised their powers in defining and restricting local taxes. A primary example is state limits on local government access to the property tax.

In 2018, total (federal, state, and local) spending as a share of GDP was 33.0%. The federal government was responsible for over half of this amount (19.1% of GDP) with the states and localities having responsibility for the remainder (13.9% of GDP). Total revenues as a share of GDP was 26.9%, with the federal government at 17.0% of GDP and the share for states and localities at 9.9% of GDP. The difference in shares between expenditures and revenues at the federal level reflects borrowing, and at the state and local level, it reflects both borrowing and intergovernmental transfers from the federal government to subnational governments. These transfers, which account for significant amounts of total state and local revenues, do not generally aim to equalize resources across states, a characteristic common in other federations, for example, in Canada and Germany (see Garcia-MilĂ  and McGuire 2019). The limited amount of equalization across regions is another distinctive characteristic of the federal system of the US.

The federal, state, and local governments dedicate a significant share of their budgets to healthcare provision (in 2016, 18.4, 29.0 and 9.2%, respectively), mainly through the Medicare and Medicaid programs. However, the US does not provide universal healthcare coverage, a widespread practice in developed counties, and particularly generous in some European countries.

The US is a large and prosperous nation. The population of the US was 326.5 million in 2018, making it the third-largest country in the world by population (far behind China and India; slightly ahead of Indonesia). The largest state by far in 2018 was California, with a population of 30.6 million; the smallest state was Wyoming with 578,000 residents. The US is one of the wealthiest countries in the world, with a GDP per capita in 2018 of $62,795, compared with $47,603 in Germany and $39,290 in Japan (source: the World Bank online data). There is large variation across the 50 states in personal income per capita; in 2018, Connecticut and Massachusetts had income per capita of $76,481 and $71,886, respectively, while West Virginia and Mississippi had income per capita of $40,907 and $37,904, respectively (source: the US Bureau of Economic Analysis online data).

In the remainder of the chapter, we explore in more detail the revenues, expenditures, and intergovernmental relations of the three levels of government in the US. We highlight the dimensions of the US system that make it distinctive compared to systems in other countries.

2 Revenues and Expenditures

In Table 1, we display aggregate revenues and expenditures of each of the three levels of government in 2016. The federal government relied most heavily on the individual income tax and payroll taxes (dedicated to Social Security and Medicare) for revenues (47.3 and 34.1% of total revenues, respectively), while state governments, in terms of own-source revenues, relied most heavily on individual income and general sales taxes (at 16.1 and 13.6% of total revenues, respectively). Local governments relied most heavily on property taxes for own-source revenues (27.0% of total revenues). The different levels of government focused their spending in distinct areas. Of the federal government’s total expenditures, 27.6% was on retirement benefits (Social Security), 18.4% was on healthcare, and 15.4% was on defense spending. For state governments, the largest spending categories were for healthcare (largely expenditures for Medicaid recipients) at 29.0%, intergovernmental grants to local governments (the most important in terms of dollars being grants to school districts) at 23.9%, and higher education at 12.4%. The largest spending share for local governments was for K-12 education (primary and secondary education) at 37.2%. Public safety at 9.7% was a distant second (and nearly tied with healthcare) for local governments.

Table 1 Revenues and expenditures by functional category and level of government, 2016 (thousands of dollars)

Intergovernmental grants from the federal government to state and local governments represented 17.2% of federal spending, with the largest grant being to support Medicaid. As a source of revenue, intergovernmental grants contributed the largest share of revenues for state and local governments, 29.8% of total state revenues and 32.9% of total local revenues.

All levels of government rely on individual and corporate income taxes, although they are minor sources of revenue for local governments. The corporate income tax presents issues with defining the tax base and in terms of competitive pressures, as many corporations are not only multistate but also multinational. The individual income tax tends to be the engine for progressivity in the tax systems of the federal government and the states, although many states have flat-rate or effectively flat-rate tax structures. State governments have complete autonomy to administer and collect income taxes, and while the state measure of income for tax purposes begins with a federal measure, most state income base definitions deviate from the federal definition through the use of state-specific deductions and exemptions.

No governments employ value-added taxes in the US. Instead, state and local governments rely on general sales taxes, which are ad valorem taxes on purchases, and all three levels of government rely on selective (or excise) taxes, which can be ad valorem or per-unit taxes. Prominent selective sales taxes include taxes on gasoline, alcohol and tobacco products, and hotel stays. General sales taxes were created early in the twentieth century and in many states were imposed on purchases of tangible goods at brick-and-mortar stores. As the economy has shifted away from goods to services and toward purchases on the internet, the general sales tax base in many states has withered.Footnote 2

The property tax is a tax on land and improvements to land (and in some instances, on other types of property such as machinery) and is a meaningful source of revenue for local governments only. Even though it is a local revenue source, state governments have the authority to define and constrain the tax. Many states impose limits on the property tax rate or growth rate of property tax revenues, and they define different classes of property for assessment purposes.

The federal government collects royalty payments on oil, natural gas, and coal extracted from federal lands and offshore waters. It also imposes a reclamation fee on coal mining operations, with the receipts dedicated to the Department of the Interior’s Abandoned Mine Reclamation Fund. Thirty-four states impose a severance tax or fee on the extraction of oil and natural gas; typically, the severance tax is on the value or volume of oil and natural gas extracted. Some states allocate a portion of their oil and natural gas revenues to local governments; however, as a rule, revenues are deposited in the state general fund (Kolesnikoff and Brown 2018).

In a study of 13 coal-producing states, the authors describe an array of state and local taxes imposed on coal companies and the extraction of coal. All but four of the 13 states impose a severance tax on the extraction of coal (either a fixed amount per ton or a percentage of the gross value of the coal) and all but two states impose a separate reclamation fee, with the revenues being dedicated to the cleanup of abandoned mine sites (Kent and Eastham 2011).

Severance taxes on non-renewable natural resources (oil, natural gas, coal and other natural resources) make up an important share of total own-source revenues for some states. In 2016, Alaska, New Mexico, North Dakota, and Wyoming obtained between seven and 24% of their total own-source revenues from severance taxes on natural resource extraction.

The two largest public health insurance programs are Medicaid and Medicare. Medicare is a program of the federal government that makes payments to healthcare organizations and medical professionals for providing medical care to individuals aged 65 and older. Medicaid (and its associated program CHIP, the Children’s Health Insurance Program) is a program delivered by state governments and jointly funded by the federal government and the states. It is the single largest source of healthcare coverage in the country. The program provides payments to healthcare organizations and medical professionals for delivering medical care to low-income individuals and families and to individuals with disabilities. Expenditures on Medicaid and Medicare have grown rapidly in recent decades in part because of the rising cost of healthcare and the aging of the population.

K-12 education is provided by local school districts free of charge to families and is largely jointly funded via local property taxes and equalizing grants from state governments. Postsecondary or higher education is provided by state governments and largely funded by direct state expenditures and tuition fees paid by students. In both the K-12 and higher education sectors, there are many private providers. In the public sphere, publicly funded but privately run K-12 charter schools are growing in importance, particularly in urban areas.

Even though the federal government provides a small share of the funding for K-12 education (on average, less than ten percent of total K-12 revenues), it has played an important role in shaping policy in an attempt to hold states and school districts accountable for improving student achievement. In 2002, the George W. Bush administration passed the No Child Left Behind (NCLB) Act, which required states to show yearly adequate progress in students’ reading and mathematics test scores. NCLB represented a marked increase in the federal role in setting K-12 education policy. Thirteen years later, in 2015, after finding that virtually no state was meeting the goals of NCLB, the administration of Barak Obama passed the Every Student Succeeds Act, which largely turned back to state governments the task of setting and monitoring achievement standards for students in the states’ schools.

Through the Social Security program, the federal government provides monthly cash benefits to retired individuals, surviving spouses, and disabled individuals. The size of the cash benefit depends on years of work and level of wages; however, there is a cap on the cash-benefit level, and it applies in a large share of cases. Many state and local governments have pension systems that provide annuities for their retired employees. In recent years, at all levels of government, retirement benefits have become a financial strain as the ratio of workers to retirees has declined with the aging of the population.

3 Intergovernmental Grants

Unlike in many other countries, federal grants in the US are not a concern in terms of vertical fiscal imbalances. States have full autonomy to raise their own revenues, with authority to impose taxes on the major tax bases. Thus, discussions of the appropriateness of federal transfers are not, as in other federations, about the sufficiency of the transfers’ amount to cover states’ expenditures, but rather on the purpose and design of the grants.

There are several grants from the federal government to state and local governments. The largest in terms of dollars is the grant to states for Medicaid. Medicaid, a program that provides healthcare insurance for low-income families and disabled persons, is administered at the state level. Its funding is joint between the states and the federal government. The funding from the federal government is through a matching grant, with a matching rate that varies across states according to their income per capita. All states receive at least a 50% matching grant so that for each dollar a state spends on Medicaid, the federal government funds another dollar. However, poorer states can receive much more, with matching rates that can be as high as 75.65%, as is the case of Mississippi for FY 2018. The 2010 Affordable Care Act (ACA) expanded the coverage of Medicaid. For expenditures on newly covered individuals, the federal government increased the matching rate to 100% for three years, and to 90% thereafter. States, according to a ruling of the Supreme Court, could decide whether to implement the Medicaid expansion. As of 2019, all but 14 states participated in the ACA Medicaid expansion program. Federal grants have increased significantly for those states that participate in the expansion program.

Other significant grants from the federal government to subnational governments include grants for education, transportation, and income security. As can be seen in Table 1, in FY 2016, total estimated federal grants to state and local governments were $661 billion. From Dilger (2018) we observe that almost 60% of the total went toward supporting healthcare expenditures (largely Medicaid), more than 15% of the total for income security programs (largely cash assistance), nearly nine percent each for education and transportation (highways and public transit), and the remainder for a variety of other purposes.

The main income security program for over sixty years, Aid to Families with Dependent Children (AFDC), was replaced in 1996 with the establishment of the Temporary Assistance for Needy Families (TANF) program. Federal funding support for the cash-assistance program was converted from a matching rate grant to a block grant for a total amount of $16.6 billion for the 50 states. The amount of the block grant has remained constant in nominal dollars since the program started in 1997 (with a slight decrease in 2017 to a total of $16.5 billion). Over time, the inflation adjusted value of the block grant has decreased by one third. The distribution among states is based on the federal contributions to each state to the AFDC program in 1994. States are required to spend own funds on an amount equal to at least 75% of their expenditures on AFDC in FY 1994 under the maintenance of effort requirement. While the federal government designed the overall requirements and guidelines for the TANF program, states were empowered to determine the eligibility for benefits and administer the program. The welfare reform that established TANF emphasized promoting job preparation and moving welfare recipients into employment. To achieve these goals the states are required to promote work so that 50% of all families, and 90% of two-parent families, participate in work activities. (For more information, see Congressional Research Service 2019.)

Transportation grants are important sources of revenue for spending on highways and transit. The federal government grants to state and local governments for highways and transit are in the form of both formula grants and competitive grants. Federal grants to state governments amount to more than thirty percent of state revenues for highway and transit spending. About ten percent of local government revenues for highways and transit are funded by federal grants. More than twenty percent of transportation expenditures of local governments are funded by state grants.

One of the more important federal grants for K-12 education is Title I, an aid program to support schools serving children from low-income families. Title I funds are distributed to school districts based on the concentration of low-income families in a district as determined by Census data. Additionally, the federal government has grant programs in support of special education for children ages three through 21. Overall, federal support for K-12 education amounts to less than ten percent of total K-12 revenues.Footnote 3

State grants to school districts are large, accounting for almost half of school districts’ revenues for K-12 education. The most common form of state aid to local school districts is a foundation aid program, which aims to ensure an adequate level of education spending for all students, irrespective of the school district they attend.

In many countries, the explicit goal of the federal grant system is to reduce the variance across jurisdictions in revenues per capita. This is not an explicit goal of the US grant system. Instead, some grants are targeted to address underlying poverty, as is the case of the Medicaid program, which provides a larger percentage match in its matching rate grant to poorer states, and the federal transfers for K-12 education, which are larger for school districts with greater percentages of poor students (but which are quite small in amounts).

We examine the redistributive result of federal grants to state and local governments in Fig. 1. The top part of Fig. 1 shows the income per capita of the 50 states ordered from largest to smallest. The bottom part displays the corresponding federal grants to state and local governments per capita. Comparing the two parts of the graph we observe that there is no pattern that would indicate that federal grants are redistributive in nature. Some rich states receive large per capita federal grants, while relatively poor states receive amounts similar to those of rich states.

Fig. 1
Two bar graphs. The approximate data presented in the format, State, personal income, federal grants, as follows. C T. 70000, 2100. M A. 65000, 2500. W A. 55000, 2010. V T. 50000, 3500. N V. 45000, 1700. U T. 41000, 1500. S C. 40000, 1650. M S. 35500, 2950.

(Source Annual Survey of State and Local Public Finances; Bureau of Economic Analysis)

Personal income and federal grants per capita to state and local governments: By state, 2016

State grants to local governments are a large source of revenue for many local governments. In Table 2, we display revenue sources for each of three types of local governments: counties, cities, and school districts. For both counties and school districts, state grants are the largest source of their revenues, respectively, 26.3 and 52.4%. For cities, their reliance on state grants is 12.8%, after property tax and charges and fees. The relevance of federal grants to local government revenues is much smaller, ranging from 3.7% for the cities to 0.9% for the school districts.Footnote 4

Table 2 Local government sources of revenue by type of local government, 2017 (thousands of dollars)

4 Trends

In Table 3, as a measure of the size of government, we display total expenditures and total revenues as a share of GDP over time for the federal government, state and local governments combined, and the total across all levels of government. From 1950 until 2018, government spending in the US grew from 21.3% of GDP to 33.0%. Over that period, the percentage of GDP spent by state and local governments more than doubled from 6.5 to 13.9%, whereas federal spending grew more slowly, from 14.8 to 19.1%. The growth spurts for state and local government spending were from 1960 to 1970, a period which encompasses the creation of the Medicaid program in 1965 and the expansion of other social-safety-net programs, and from 2005 to 2010, which includes the roll out of the American Recovery and Reinvestment Act (ARRA), the Obama administration stimulus program enacted in the wake of the Great Recession. Federal spending also increased dramatically from 2005 to 2010 due to ARRA.

Table 3 Current expenditures and own source revenues as a share of GDP by level of government

Revenues displayed similar although slower growth trends. Note that state and local revenues are in every year lower than state and local expenditures, reflecting the fact that state and local governments rely to a significant extent on grants from the federal government (which are counted as revenues of the federal government). For the federal government, its spending is greater than or virtually equal to its revenues in every year except 2000, when it ran a surplus. In some years, the deficit implied by the numbers is quite large, for example, in 2010, the year that reflects the stimulus spending of ARRA.

Table 4 displays federal grants to state and local governments measured in real 2012 dollars per capita in total and for four large categories of spending. There has been a rapid rise in the level of federal grants and a marked shift in the relative levels across categories. In 1950, grants for income security dwarfed the level of grants for other purposes. By 2018, grants for healthcare dwarfed grants for other purposes. Grants for healthcare took a large leap from 1960 to 1970 due to the creation of Medicaid in 1965, a state-run program for low-income and disabled families; Medicaid is jointly funded by matching grants from the federal government and state own-source revenues. After the Medicaid program was adopted, grants for healthcare continued to grow at a fast pace throughout the period. Grants for transportation grew dramatically between 1950 and 1960 when states started building out the interstate highway system, an initiative largely funded by federal grants.

Table 4 Federal intergovernmental grants by functional category, 2012 dollars per capita

In Table 5, we examine major categories of tax revenues, aggregated across all levels of government. Income taxes (individual and corporate combined) as a share of total tax revenues bounced around a bit over the decades, a reflection of the relative volatility and responsiveness of the taxes to the underlying economy and also a reflection of major federal tax changes enacted by different administrations. Sales taxes remained steady as a share of total taxes, hovering around 20%.

Table 5 Share of tax revenues across all levels of government by category

Property taxes as a share of taxes fell between 1970 and 1980 reflecting the impact of the property tax revolt, which began with the passage of Proposition 13 in California in 1978. As property tax values increased rapidly in California in the 1970s and local governments failed to adjust their property tax rates, property tax revenues and property tax liabilities soared. There was a tax revolt that culminated in the passage by voter referendum of Proposition 13, an amendment to the California constitution. Proposition 13 limited the overall property tax rate to 1% and limited the growth rate of assessed valuation to 2% per year unless the property was sold, at which time its assessed value reflected its sale price. Over the next few years, the tax limitation movement swept across the country and various limitation measures were approved by the voters or enacted by state legislatures.Footnote 5

Over the course of the past nearly 60 years, the share of total government expenditures devoted to healthcare increased dramatically, from 4.2% in 1960 to 23.7% in 2017 (see Table 6). This large increase reflects the passage of major new government healthcare programs over the period (both Medicaid and Medicare were signed into law in 1965), the rising costs of healthcare provision, and the aging of the population. Defense spending as a share of total government expenditures declined significantly, from 33.8% in 1960 to 9.2% in 2017, reflecting the decline in US involvement in warfare after the 1960s and 1970s. The share of spending devoted to education (K-12 education combined with higher education) was relatively stable over the period.

Table 6 Share of total expenditures across all levels of government by major category

5 Diversity

States and local governments in the US have significant revenue-raising autonomy and spending responsibility. As noted above, in 2018, state and local government own-source revenue was 9.9% of GDP compared to 17.0% for the federal government; state and local government spending was 13.9% of GDP compared to 19.1% for the federal government.

An important distinction of the US system is that there is great variety across the states in how they raise revenues and set spending priorities.Footnote 6 Because the individual income tax and general sales tax are by far the two largest sources of revenue for states other than intergovernmental grants from the federal government, we focus our examination on these two taxes. In Fig. 2, we portray states’ reliance on the individual income tax in 2016, calculated as the percentage of total state general revenue raised through the individual income tax. We observe large differences across states, with seven states without an individual income tax, while for other states revenues from the individual income tax amount to almost 30% of their revenues. In Fig. 3, we portray states’ reliance on the general sales tax in 2016. We identify five states without a general sales tax, while at the other extreme we find states that raise more than 30% of their total general revenues through the general sales tax.

Fig. 2
A bar graph depicts the state reliance on the income tax as a percentage of total state general revenues for various states. All data are approximate. C T. 28. M A. 25. N C. 22. W I. 21. I L. 20. M E. 18. S C. 15. A R. 14. V T. 12. N M. 8. N D. 5. T N. 1. F L. 0. S D. 0. W A. 0. W Y. 0.

(Source Annual Survey of State and Local Public Finances)

State reliance on the income tax, 2016: Individual income tax as a percentage of total state general revenues

Fig. 3
A bar graph depicts the state's reliance on the general sales tax as a percentage of total state general revenues. Data are approximate. W A. 31. F L. 27. T N: 23. I N. 20. M E. 15. N D. 14. C T. 13. S C. 12. M D. 11. C O. 10. A L. 10. W V. 10. V A. 8. N Y. 7. V T. 5. A K. 0. D E. 0. M T. 0. N H. 0.

(Source Annual Survey of State and Local Public Finances)

State reliance on the general sales tax, 2016: General sales tax as a percentage of total state general revenues

Because local governments raise the vast majority of property tax revenues (97% in 2016), we examine local government reliance on the property tax, which is the largest source of revenues for local governments after intergovernmental grants. In Fig. 4, we display the percentage of total local general revenues raised through property taxes. We observe that local governments rely on the property tax in all states, although there is a large diversity, from a reliance of ten percent to above 60%.

Fig. 4
A bar graph depicts the local government's reliance on property taxes. All data are approximate. N H. 61. C T. 59. M E. 55. M A. 50. T K. 40. N E. 37. M D. 30. P A. 30. M N. 25. S C. 25. T N. 23. I N. 22. N D. 21. W Y. 20. V T. 20. L A. 19. N V. 19. N M. 16. A L. 10. A R. 8.

(Source Annual Survey of State and Local Public Finances)

Local government reliance on property taxes, 2016: Property tax as a percentage of total local general revenues

On the spending side, we also see wide discretion for state and local governments. For all 50 states, for 2016, we examine in current dollars per capita, combined state and local spending on several categories of spending that account for the largest components of the state and local budget (see Table 1). In Fig. 5, we observe the diversity of spending on K-12 education, which ranges from $3,449 per capita in Wyoming to $1,136 per capita in Arizona. For higher education, the differences are proportionally even larger, with Nevada, the state at the bottom of the distribution, spending $486 per capita, less than one third of the spending in North Dakota at $1,617 per capita (see Fig. 6). Expenditures on Medicaid, displayed in Fig. 7, also reveal large diversity across the states, not dissimilar to the differences observed in education spending. Figure 8 displays values for expenditures on transportation, with the values for Alaska and North Dakota being far above the values of any other state. Even abstracting from these two outliers, diversity is clearly present, with Tennessee spending 28% of what Wyoming spends.

Fig. 5
A bar graph depicts the state and local direct expenditures on K 12 education 2010 in dollars per capita. All data are approximate. W Y. 3350. N J. 3000. V T. 2500. N E. 2400. R I. 2300. N H. 2100. O H. 2000. T X. 1900. M E. 1800. C O. 1700. K Y. 1600. O K. 1500. T N. 1450. I D. 1350. A Z. 1300.

(Source Annual Survey of State and Local Government Finances)

State and local direct expenditures on K-12 education, 2016 (dollars per capita)

Fig. 6
A bar graph depicts the state and local direct expenditures on higher education. All data are approximate. N D. 1600. W Y. 1520. A K. 1450. D E. 1300. O R. 1200. O K. 1000. A R. 900. M T. 900. N J. 800. M A. 800. N Y. 700. M E. 600. N V. 500.

(Source Annual Survey of State and Local Government Finances)

State and local direct expenditures on higher education, 2016 (dollars per capita)

Fig. 7
A bar graph of local direct expenditures. All data are approximate. N Y. 2800. N M. 2500. A K. 2400. R I. 2200. A R. 2100. W V. 2050. C A. 1900. P A. 1900. O R. 1750. M D. 1500. N H. 1400. M I. 1300. I D. 1200. F L. 1100. G A. 1000. N D. 1000. N E. 850. U T. 850. S D. 770.

(Source Annual Survey of State and Local Government Finances)

State and local direct expenditures on Medicaid, 2016 (dollars per capita)

Fig. 8
A bar graph of the state and local expenditures on Transportation. Data are approximate. A K. 2800. M D. 2450. W Y. 1340. S D. 1200. V T. 1040. M N. 1000. N E. 900. M T. 900. P A. 900. H I. 900. D E. 900. N Y. 700. W V. 650. W A. 650. L A. 620. F L. 620. A R. 620. O H. 500. N C. 430. T N. 350.

(Source Annual Survey of State and Local Government Finances)

State and local direct expenditures on Transportation, 2016 (dollars per capita)

Another area of significant diversity in the fiscal federal system in the US is how the states fund K-12 education. The provision of K-12 education is under the responsibility of local school districts and on average funding for K-12 is split approximately 50% state and 40% local, with the remaining 10% funded by the federal government. There is, however, great variance across the states in the share funded by the state. In Fig. 9 we display the share of total revenues for K-12 education that come from the state. The diversity across states is quite remarkable, ranging from a low of 24% in Illinois, up to nearly 90% in Hawaii and Vermont, indicating that there are important differences across states in approaching education funding.

Fig. 9
A bar graph depicts the state intergovernmental grants. All data are approximate. H I. 85. V T. 85. N M. 70. M N. 67. W A. 62. N C. 62. N D. 55. W Y. 55. D E. 55. I N. 52. W V. 52. I A. 51. M S. 50. A R. 50. O K. 48. A Z. 45. N J. 40. N V. 37. N E. 34. M D. 34. S D. 30. I L. 25.

(Source Nation Center for Education Statistics)

State intergovernmental grants as a percentage of total education revenues, 2016

States have wide discretion and have chosen different paths in the rules, regulations, and practices surrounding budgets and funds. Most states have balanced budget requirements (BBRs) that apply to their general fund (which funds the operating budget), but the stringency of the requirement varies from state to state.Footnote 7 In some states, all that is required is that the governor propose a balanced budget whereas in other states the legislature must pass (and the governor sign) a balanced budget and any unexpected deficit cannot be carried into the next fiscal year nor covered by short-term borrowing. All states have rainy day funds (RDFs), also known as budget stabilization funds, which provide reserves that can be tapped during economic downturns. However, the conditions and requirements for deposits into and withdrawals from the funds differ across the states. For example, in some states, RDFs can be accessed when an unanticipated budget gap arises, whereas withdrawals in other states can be triggered by revenue volatility. The authority for withdrawal can rest with the governor, the legislature, a state agency or, as is the case in California, all three. Once depleted, the rules for replenishing the RDF also vary across states, with some states being required to replenish the funds in the next fiscal year (Rhode Island and Wyoming) and other states allowing several years for replenishment (Alabama allows ten years, for example). See Walczak and Cammenga (2020).

6 Challenges and Future Directions

The US fiscal federal system has been remarkably stable for several decades. However, the aging population and rising healthcare costs are presenting challenges for all three levels of government. Income support for retirees and support for healthcare are two of the fastest-growing components of public budgets. We saw in Table 6 that healthcare spending as a share of total expenditures (across all levels of government) increased from 4.2% in 1960 to 23.7% in 2017, far outstripping the share for education, the second-largest category. Most state and local governments provide publicly funded pensions to their retired employees. In Fig. 10, we see that from 1993 to 2018, aggregate state and local pension benefit payments for retired public-sector employees grew much faster than GDP (benefits grew more than six times while GDP growth was just shy of doubling). The rapid growth in expenditures for healthcare and for income support for retirees is making it more challenging for state and local governments to deliver desired levels of other government services.

Fig. 10
A graph of growth in pension benefit payments compared to growth in G D P, for the years 1993 to 2018. All data are approximate. The line for benefit payments goes from (1993, 50) to (2018, 639). The line for G D P goes from (1993, 50) to (2018, 187).

(Source Annual Survey of Public Pension)

Pension funding dynamics—growth in state and local pension benefit payments compared to growth in GDP: Series indexed to 100 in 1993

Many state and local government pension systems are underfunded, in some cases, severely so.Footnote 8 In Fig. 11, we display the ratio of aggregate state and local pension fund assets to liabilities over the period 2002 to 2016. After peaking at 66.7% in 2007 before the start of the financial crisis, the ratio declined to 47.5% in 2016. The aging of the population and the generosity of defined benefit pension plans, the most common form of the pension plan for state and local governments, contributed to the growth in liabilities. Underfunded pensions have played a role in budget difficulties for several state and local governments, most notably in the bankruptcy proceedings of the city of Detroit, Michigan in 2013–2014. The city’s inability to meet its pension obligations brought the city to bankruptcy. The city exited bankruptcy after 16 months when parties agreed to the “Grand Bargain”: financial contributions by philanthropic organizations, grants in aid from the state government, financial contributions by the Detroit Institute of Arts, and retirees agreeing to a cut in the generosity of retirees’ benefits.

Fig. 11
A bar graph depicts the state and local pension fund assets as a percentage of liabilities, between the years 2004 and 2016. All data are approximate. The line starts at (2004, 59), peaks at (2008, 66) and follows a decreasing trend with the end point being (2016, 47.5).

(Source Federal Reserve Board of Governors, Financial Accounts of the United States)

State and local pension fund assets as a percentage of liabilities

Disregarding intergovernmental expenditures, spending on healthcare has become the single largest category of expenditures for state governments (at 29.0% in 2016), the second-largest category of expenditures for the federal government (at 18.4%, behind only retirement benefit payments at 27.6%), and the third-largest category of expenditures for local governments (behind spending on K-12 education and public safety). (See Table 1.) The Affordable Care Act of 2010 resulted in an expansion of healthcare coverage to additional families. For states that agreed to cover more families under the program, the federal government increased the matching rate to 100% on state Medicaid expenditures for the newly covered families.Footnote 9 All but 19 states initially and, as of 2019, all but 14 states agreed to expand coverage. Still, 8.5% of the population in the US is not covered by either public or private health insurance.

The two primary issues with public K-12 education are inequities in resources across school districts and low student achievement. In recent decades, state supreme courts have ruled that their state’s school funding systems are in violation of the state constitution.Footnote 10 Murray et al. (1998) examined the impact of court challenges and found that court-ordered education finance reform reduced within-state inequality in spending per pupil across school districts. The reduction in inequality resulted largely through increases in spending per pupil at the bottom of the distribution; spending per pupil at the top of the distribution remained unchanged.

Another recent development in public K-12 education is the growth of charter schools. Charter schools are publicly funded but privately operated elementary and secondary schools. They are prevalent in cities with large public school systems, particularly in areas where student achievement levels in traditional public schools are low. The evidence on the effectiveness of charter schools is voluminous and mixed (for two examples see Angrist et al. 2013 and Center for Research on Education Outcomes 2013).

The US has one of the world’s most highly regarded public higher education systems. However, there are concerns that public universities are becoming unaffordable for many families. The concerns center around the level of tuition fees and the level of student debt, which has become cripplingly high for many students.Footnote 11

There is a two-pronged challenge with transportation: declining revenues dedicated to transportation and the deteriorating condition of the infrastructure. Federal funds to support state and local spending on transportation infrastructure have been declining in recent years due to the inability to raise the federal tax on gasoline (at 18.4 cents per gallon since 1993) and the rise of more fuel-efficient cars.Footnote 12 States have been stepping into the breach to address the nation’s crumbling infrastructure, but they have uneven financial capabilities and political willingness. In addition, many transportation systems cross state lines, making state provision inefficient.

Many of the challenges that the US fiscal federal system faces, in particular, the challenges of an aging population and rising healthcare costs, are common to fiscal federal systems around the world. The challenges in education and transportation are distinctive to the US situation; they exist in part because of the specific approaches the US has taken to funding education and transportation at different levels of government. These approaches are not commonly employed in other countries. Overall, however, the fiscal federal system in the US is viewed in a favorable light. It has been both stable, withstanding the test of time, and flexible, adjusting over time as changing conditions warranted. A distinctive characteristic of the US system is the uncommon degree of revenue-raising authority of its subnational governments. It is a clear strength of the US system and a model for other countries.