(UNITED STATES) — Republicans, led by Senator Ted Cruz, are pressing for a capital gains tax change that would index gains to inflation, but no federal law has changed as of April 29, 2026, and the current rules still apply for tax year 2026, with returns filed in 2027.

The main proposal is Cruz’s Capital Gains Inflation Relief Act of 2025. It would adjust an asset’s tax basis for inflation before the gain is calculated. Supporters say that would reduce tax on paper gains caused by higher prices rather than real growth. Cruz has made the same argument in earlier bills from 2018 and 2021. He and Senator Tim Scott have also urged President Trump to try inflation indexing through executive action.

Nothing in the Internal Revenue Code has been revised yet. That means taxpayers still calculate gain under existing rules: sale price minus adjusted basis, with no inflation adjustment. The IRS continues to administer the current system through Form 1040, Schedule D, and Form 8949. Immigrants and visa holders who are U.S. tax residents follow those same rules on worldwide capital gains. The IRS explains residency rules in Publication 519.

The separate Republican pitch is a lower top long-term capital gains rate. The proposal discussed in Washington would cut the top rate from 20% to 15%. Some supporters also discuss excluding the 3.8% net investment income tax, which would further reduce the federal rate on some high-income households. No bill has passed, and no effective date has been enacted.

Under current law for 2026, the long-term capital gains rates remain 0%, 15%, and 20%, depending on taxable income. The income bands cited in the proposal materials are 0% up to $48,350 for single filers, 15% up to $533,400, and 20% above $533,400. The proposal’s political messaging focuses on upper-income taxpayers, including single filers earning more than $441,450, while supporters also argue many middle-income households report capital gains.

IRS data from 2022 is central to that argument. Republicans cite figures showing 30,465,850 households reported capital gains, and 74% of them, about 22.6 million, had income under $200,000. Americans for Tax Reform, roughly 30 conservative groups, and Treasury Secretary Bessent have backed the push in public letters and statements. Opponents answer that the largest dollar benefits still flow to households with the biggest portfolios.

The fight also sits inside a wider tax debate. Republicans are trying to make the 2017 Tax Cuts and Jobs Act permanent after many individual provisions expired at the end of 2025. Capital gains relief is being discussed alongside expansions of opportunity zones and research and development tax benefits. No enacted package includes inflation indexing at this point.

The practical effect is easiest to see with a simple example. Assume a taxpayer bought stock for $100,000 and sold it years later for $160,000. Under current law, the taxable gain is $60,000. If inflation indexing raised basis to $125,000, the taxable gain would fall to $35,000. At a 20% rate, that is a difference of $5,000 in federal capital gains tax before any 3.8% surtax.

That example matters to immigrants who became U.S. tax residents after holding foreign assets for years. A green card holder, or an H-1B worker who meets the substantial presence test, generally reports worldwide capital gains once treated as a U.S. resident. An F-1 or J-1 student may still be a nonresident for tax purposes during the exemption period, which changes how gains are taxed. IRS international taxpayer guidance and Publication 519 are the starting points.

⚠️ Warning: No grandfather rule exists yet. Taxpayers should not amend basis records, estimated payments, or sale timing based on a proposal that Congress has not enacted.

Critics say the proposal would still favor wealthy households. Brookings has argued that lower capital gains taxes can encourage tax sheltering, produce windfalls on past appreciation, and reduce federal revenue. Political resistance is not limited to Democrats. Polling cited by opponents found 73% of voters opposed prioritizing tax cuts for the wealthy, including 55% of Republicans. Supporters respond that inflation distorts gains across income levels and taxes nominal appreciation that never increased real purchasing power.

No transition rule, effective date, or grandfather provision is available because no legislation has passed. If Congress acts later in 2026, the law could apply prospectively, retroactively, or only to assets sold after a stated date. The same uncertainty applies to any executive action. Taxpayers should keep complete purchase records, reinvestment records, and basis adjustments now. Those records matter under current law and would still matter under an indexed system.

? Deadline Alert: Taxpayers selling appreciated assets in 2026 should plan under current law now. Estimated tax rules still apply if the sale creates a large gain.

Three steps make sense while Washington debates the issue. First, report 2026 sales under current law using Form 8949 and Schedule D. Second, review residence status early if immigration status changed during the year, especially after a move from F-1 to H-1B or to permanent residence. Third, track foreign accounts and filing duties separately, because capital gains relief would not change FBAR, Form 8938, or other international reporting. The IRS forms page is at irs.gov/forms-pubs.

If a taxpayer expects a large asset sale, basis records should be organized before year-end 2026. If immigration status changed during the year, Publication 519 should be reviewed for dual-status and residency rules. A CPA or enrolled agent with international tax experience is especially useful where foreign brokerage accounts, treaty positions, or pre-immigration appreciation are involved.

⚠️ Disclaimer: This article is for informational purposes only and does not constitute tax, legal, or financial advice. Tax situations vary based on individual circumstances. Consult a qualified tax professional or CPA for guidance specific to your situation.