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Illinois Policymakers Should Think Twice Before Taxing GILTI
If Illinois’ budget is enacted as-is, Illinois will newly tax 50 percent of Global Intangible Low-Taxed Income (GILTI) as of tax year 2025, retroactively increasing tax burdens for US businesses and further hindering Illinois’ business tax competitiveness.
7 min read
“Big Beautiful Bill” House GOP Tax Plan: Preliminary Details and Analysis
Our preliminary analysis finds the tax provisions increase long-run GDP by 0.8 percent and reduce federal tax revenue by $4.0 trillion from 2025 through 2034 on a conventional basis before added interest costs.
9 min read
The Good, the Bad, and the Ugly in the One, Big, Beautiful Bill
Republicans have advanced legislation to extend many provisions of the 2017 Tax Cuts and Jobs Act (TCJA) alongside dozens of new provisions. Any comprehensive tax legislation is going to have its wrinkles, and the “One, Big, Beautiful Bill” is no different.
8 min read
Considering Potential International Corporate Tax Reforms in the US
Tax legislation in 2025 may have good reason to address international corporate income taxes, because of scheduled changes slated to go into effect or because of international developments like the Pillar Two agreement.
63 min read
Overview of the Tax Foundation’s General Equilibrium Model
The Tax Foundation uses and maintains a General Equilibrium Model, known as our Taxes and Growth (TAG) Model to simulate the effects of government tax and spending policies on the economy and on government revenues and budgets.
9 min read
The Latest on the Global Tax Agreement
The agreement represents a major change for tax competition, and many countries will be rethinking their tax policies for multinationals. If there is no agreement on changes to Pillar Two or digital services taxes, retaliatory American tariffs could be on the horizon.
8 min read
Tax Policy and the US Economy: Enhancements to Our Modeling Framework
The Tax Foundation models tax policy using our proprietary Taxes and Growth model, illustrating the economic, revenue, and distributional impacts of different changes to the federal tax code. We’ve recently implemented improvements to the model that have been underway for the past several years, and we will be detailing them further in our forthcoming model methodology update.
4 min read
Five Things to Know About Trump’s Global Minimum Tax Order
This week, the incoming Trump administration issued a day-one executive order on the global minimum tax agreement known as Pillar Two, which seeks to ensure multinational corporations pay at least 15 percent in income tax.
6 min read
Pillar Two Implementation in Europe, 2024
18 of the 27 EU Member States have implemented both the income inclusion rule and the qualified domestic minimum top-up tax in 2024.
4 min read
Kamala Harris Tax Plan Ideas: Details and Analysis
On tax policy, Harris carries forward much of President Biden’s FY 2025 budget, including higher taxes aimed at businesses and high earners. She would also further expand the child tax credit (CTC) and various other tax credits and incentives while exempting tips from income tax.
17 min read
GILTI Tax Treatment by State, 2024
States that tax GILTI increase filing complexity, drive up the cost of tax compliance, and introduce unnecessary economic uncertainty and legal risk. 21 states and DC continue to tax GILTI despite these challenges.
6 min read
Supernormal Returns: An Overlooked Foundation of Tax Policy Debates
Supernormal profits are an important concept, but we should be wary of analysis that both defines supernormal profits very broadly and equates all supernormal profits with monopoly profits that can be easily taxed without negative economic effects.
23 min read
Results of a Survey Measuring Business Tax Compliance Costs
Lawmakers should consider compliance costs—not just tax liabilities—when evaluating reforms to business income taxation.
22 min read
Gov. Tim Walz Raised Taxes as Most Governors Cut Them
Gov. Walz’s tax policy record is notable because of how much it contrasts with broader national trends. In recent years, most governors have championed tax cuts. Walz, rare among his peers, chose tax increases.
5 min read
Puerto Rican Competitiveness and Pillar Two
Puerto Rico, a US territory with a limited ability to set its own tax policies, will be the first part of the US to be substantially affected by Pillar Two, the global tax agreement that seeks to establish a 15 percent minimum tax rate on corporate income.
17 min read
Why We’re Closely Watching Moore v. U.S.
The Moore case could have important impacts on tax policy.
5 min read
The Impact of BEPS 1.0
The global landscape of international corporate taxation is undergoing significant transformations as jurisdictions grapple with the difficulty of defining and apportioning corporate income for the purposes of tax.
22 min read
Testimony: International Tax Avoidance
Lawmakers should aim for policies that support investment and hiring in the United States and refining anti-avoidance measures to improve administrability and lower compliance costs.
Vermont Tax Proposals Would Leave the State and Vermonters Behind
With proposals to adopt the nation’s highest corporate income tax, second-highest individual income tax, and most aggressive treatment of foreign earnings, as well as to implement an unusually high tax on property transfers, Vermont lawmakers have no shortage of options for raising taxes dramatically.
7 min read