Candice Horbacz
This week, the Tax Foundation released its annual State Tax Competitiveness Index, an exceptionally valuable diagnostic instrument that meticulously evaluates states’ tax structures across more than 150 distinct variables. Unlike many analyses of state taxation, this comprehensive report deliberately shifts its focus from the sheer volume of revenue collected—the "how much"—to the underlying design and efficiency of tax systems—the "how." This emphasis acknowledges a fundamental principle in public finance: that superior methods exist for governments to generate necessary revenue. Inevitably, the publication of the Index often sparks curiosity, particularly regarding its top-ranked states. For instance, if Wyoming and South Dakota consistently lead the rankings, a common query emerges: why aren’t more corporations immediately flocking to the Black Hills?
Understanding the "How": The Index’s Foundational Methodology
At its core, the State Tax Competitiveness Index serves as a critical benchmark for policymakers, business leaders, and citizens seeking to understand the intricate landscape of state taxation. Published by the Tax Foundation, a leading independent tax policy research organization with a long-standing reputation for non-partisan analysis, the Index aims to inform and improve tax policy. Established in 1937, the Tax Foundation has consistently advocated for tax systems that are simple, neutral, transparent, and stable—principles that underpin the very design of this annual report.
The Index delves deep into the mechanics of state tax codes, scrutinizing not just tax rates, but the myriad structural components that can either foster or hinder economic activity. A "tax," in this context, refers to a mandatory payment or charge collected by local, state, and national governments from individuals or businesses to cover the costs of general government services, goods, and activities. The Index assesses these structures across five primary sub-indices, each representing a significant component of state tax codes: corporate taxes, individual income taxes, sales and excise taxes, property and wealth taxes, and unemployment insurance taxes. These categories encompass the broad spectrum of revenue-generating mechanisms employed by states.
To ensure a balanced and relevant evaluation, the weight assigned to each sub-index is not arbitrary or equal. Instead, it is dynamically determined by the variance observed across states within that particular category. This methodological choice is crucial; it effectively allocates greater weight to areas where states possess more latitude to compete and differentiate themselves through policy choices. For instance, if there’s significant diversity in how states structure their corporate income taxes, that sub-index will carry more weight, reflecting the greater impact of policy decisions in that area.
The philosophy guiding the Index posits that a simple tax code reduces compliance costs for businesses and individuals; a neutral tax code avoids distorting economic decisions; a transparent tax code ensures clarity and accountability; and a pro-growth tax code encourages investment, innovation, and job creation. These four pillars form the bedrock of what the Tax Foundation considers an optimal tax environment.
The Nuance of Top Rankings: Wyoming, South Dakota, and the "Wins Above Replacement" Analogy
The consistent top performance of states like Wyoming and South Dakota often prompts further inquiry. A key factor in their high rankings stems from their ability to forgo certain major tax categories altogether. For example, both states do not impose an individual income tax, which is a levy on the wages, salaries, investments, or other forms of income an individual or household earns. Similarly, many top-ranked states also avoid a corporate income tax, which is a tax levied by federal and state governments on business profits. By not imposing these taxes, these states inherently avoid introducing structural flaws associated with them, thus achieving perfect or near-perfect scores in those respective sub-indices.
However, the Index acknowledges that tax policy exists within a broader economic ecosystem. The situation is aptly compared to "Wins Above Replacement" (WAR) in baseball sabermetrics. Just as WAR measures a player’s contribution beyond a replacement-level performer, a well-structured tax code provides a measurable advantage. It won’t transform the Wyoming Basin into a bustling metropolis overnight, nor will a poorly designed tax structure instantly turn Manhattan into a ghost town. Yet, the impact of tax structure on a state’s economic trajectory—its successes or failures—is often substantial. Every state, regardless of its unique economic profile, can significantly benefit from adopting a simple, neutral, transparent, and pro-growth tax structure.
States that manage to forgo one or more major tax types often achieve this through various mechanisms. Some may lean heavily on other major tax types; for example, a state without an income tax might have higher sales taxes (a levy on retail sales of goods and services) or property taxes. Others might operate on leaner government budgets, or leverage significant natural resources like oil and gas, which provide substantial severance tax revenue. Demographic factors also play a role; states like Florida, with its robust tourism industry and influx of retirees, can generate considerable revenue through sales and property taxes without needing an individual income tax. These distinct economic realities highlight why the "Wyoming model" of tax policy, while highly competitive, may not be universally replicable.
The Path to Competitiveness: States Embracing Comprehensive Reform
Recognizing the limitations of the "no-tax" model for many states, the Index also spotlights a crucial cohort of states that, despite imposing all major tax types, have achieved remarkable competitiveness through diligent and comprehensive tax reform. These states—including Missouri, Utah, North Carolina, North Dakota, Idaho, Indiana, and Oklahoma—ranked impressively, from 9th to 15th, in this year’s Index. Their success story lies in their commitment to modernizing their tax codes, adopting moderate rates, and implementing comparatively well-designed structures.
The journey of these states offers a compelling chronology of policy innovation:
- Utah initiated significant reforms beginning in 2006, systematically overhauling its tax system to enhance its competitive edge.
- Indiana embarked on its reform path in 2011, focusing on creating a more business-friendly environment through various adjustments.
- North Carolina has been a standout example, implementing a series of sweeping reforms that commenced in 2013. These changes dramatically lowered individual and corporate income tax rates, broadened tax bases, and simplified the overall structure, propelling the state into the top tier of competitiveness.
- Idaho began its modernization efforts in 2022, signaling a commitment to adapt its tax code to contemporary economic demands.
- North Dakota followed suit in 2023, introducing reforms aimed at improving its business climate and attracting investment.
- Missouri has undertaken a series of rate cuts and structural reforms in recent years. Notably, the state is poised for a significant change with the repeal of its capital gains tax—a tax levied on the profit made from selling an asset—scheduled for 2025, further enhancing its appeal for investors.
- Oklahoma has also been proactive in adopting tax reforms. Recent changes include the elimination of its marriage penalty in 2024—a situation where a household’s overall tax bill increases due to a couple marrying and filing taxes jointly—and the repeal of its capital stock tax in the same year. Furthermore, effective in 2026, Oklahoma is set to reduce its individual income tax rates and consolidate brackets, aiming for a simpler and more efficient income tax system.
These reforms are not merely cosmetic; they represent strategic decisions by policymakers to create tax environments that foster economic growth, attract businesses, and retain talent. They demonstrate that even states with diverse revenue needs can achieve high levels of tax competitiveness through thoughtful design and continuous improvement.
Beyond the Numbers: The Index as a Policymaker’s Diagnostic Tool
For taxpayers, the Index provides an accessible starting point for understanding their state’s tax position relative to its peers. However, its true power as a diagnostic tool is most evident for policymakers and others deeply invested in improving their state’s tax code. The detailed tables accompanying the Index allow readers to conduct granular comparisons, delving into specific provisions that define tax structures.
For example, policymakers can examine how their state treats "throwback rules" for corporate income taxes (which can impact where sales are sourced for tax purposes), the treatment of net operating losses (crucial for businesses during economic downturns), or whether the individual income tax’s brackets are indexed for inflation (a measure that prevents "bracket creep" and ensures fairness over time). They can also assess whether their state authorizes "split-roll property taxation," where different types of property (e.g., residential vs. commercial) are assessed or taxed at different rates. This level of detail transforms the Index from a mere ranking system into an actionable roadmap for targeted reforms. It allows states to identify specific structural weaknesses and learn from the best practices of their more competitive counterparts.
The Broader Economic Landscape: Why Taxes Matter Amidst Other Factors
It is critical to acknowledge that tax policy, while profoundly influential, is but one variable in the complex equation of location decisions for businesses and individuals. Factors such as the availability of an educated workforce, the overall quality of life, proximity to relevant markets, regulatory environments, and even climate and weather conditions all play significant roles. Indeed, some of these factors inherently involve trade-offs. A vibrant cultural scene or access to major transportation hubs, for instance, might come with a higher cost of living or increased regulatory burdens.
However, taxes hold a unique position among these considerations: they are largely within the direct control of policymakers. While a state cannot instantly create a new natural harbor or dramatically alter its weather patterns, it can modify its tax code. This capacity for direct intervention means that even within a fixed revenue target—the amount of money a state needs to fund its public services—there are demonstrably better and worse ways to raise that revenue.
The case of New York provides a compelling illustration. If South Dakota were burdened with New York’s tax code, it would undoubtedly struggle. People are clearly willing to pay a premium to live in New York City—on real estate, on consumer purchases, and, yes, on taxes. But there are inherent limits to this willingness, and a system that is bearable in Manhattan may prove considerably more burdensome in Syracuse, or elsewhere in the state. As former New York Governor Andrew Cuomo repeatedly noted, even in states with high costs of living and robust public services, tax burdens and, crucially, tax structures matter. New York itself demonstrated this principle by dramatically improving its corporate component in the Index several years ago, thanks to meaningful corporate tax reforms adopted through bipartisan consensus. This shows that even large, diverse economies can benefit from structural improvements.
The Index meticulously measures tax structure, not the entire spectrum of factors businesses consider. Yet, taxes remain an important part of the mix. Modernizing a state’s tax structure directly helps position it for sustained economic growth. States that achieve higher rankings on the Index are those that have cultivated better-structured tax codes. And in the competitive arena of state economies, better-structured tax codes consistently translate into "Wins Above Replacement," providing a tangible edge in attracting investment, fostering innovation, and enhancing overall prosperity. The ongoing quest for optimal tax policy is a dynamic one, requiring continuous analysis, adaptation, and a commitment to principles that support long-term economic vitality.
About the Author
Janelle Fritts is a Senior Policy Analyst with the Tax Foundation’s Center for State Tax Policy. She is the lead researcher on the annual State Tax Competitiveness Index and serves as a resource to policymakers in their efforts to modernize and improve the structures of their state tax codes. Her work has been cited in The New York Times, the Associated Press, Bloomberg, and numerous state media outlets across the country.
