Millions of homeowners who itemize their federal tax returns will see relief starting with tax year 2026: the cap on deducting state and local taxes, commonly known as the SALT cap, has risen to $40,400. The increase stems from the One Big Beautiful Bill Act, which became Public Law No. 119-21, and the IRS has already published the inflation-adjusted figure as part of its annual tax-year 2026 guidance. For filers in high-tax states who have bumped against the prior $10,000 ceiling since 2018, the change represents the most significant expansion of the deduction in nearly a decade.
Why the $40,400 SALT cap changes the math for itemizers
The prior $10,000 limit, set by the 2017 Tax Cuts and Jobs Act, forced many taxpayers in states with steep property and income taxes to abandon itemizing altogether. A four-fold increase to $40,400 reopens the calculation for households whose combined state income, property, and sales taxes exceed the standard deduction threshold. Filers in New York, New Jersey, California, Connecticut, and Illinois, where median property tax bills alone can run well above $8,000, stand to benefit the most. The expectation that these states will see a measurable jump in itemized returns for 2026 filings is grounded in straightforward arithmetic: when the cap no longer swallows most of a household’s state and local tax burden, the incentive to itemize returns in force.
The IRS confirmed the new ceiling in news release IR-2025-103, which details tax-year 2026 adjustments incorporating amendments from Public Law No. 119-21. That release points taxpayers and preparers to the controlling revenue procedure that will govern how the limit applies on Schedule A. While the higher cap will not matter for households whose state and local tax payments remain below the standard deduction, it meaningfully changes the calculus for upper-middle-income and higher-income filers in high-cost regions who had previously lost much of the benefit of itemizing.
How the law and the IRS score support the $40,400 figure
The $40,400 amount traces directly to the enrolled text of H.R. 1, titled the underlying legislation that became Public Law No. 119-21. The statutory language sets the base cap and directs annual inflation indexing, which the IRS then operationalizes through its revenue procedures. Separately, the nonpartisan Joint Committee on Taxation published its score, JCX-26-25R, estimating the revenue effects of H.R. 1 across affected years and income brackets. That estimate gives Congress and the public a window into how much federal revenue the higher cap will cost over the budget window, though exact phase-out thresholds by filing status and income level are not fully detailed in the publicly available summary.
Taxpayers preparing for the 2026 filing season can expect updated line-by-line instructions on Schedule A to reflect the new ceiling. The IRS forms page serves as the gateway to those materials, though the revised instructions tied to the 2026 tax year will not appear until closer to the opening of the filing season. In practice, the mechanics should remain familiar: taxpayers will still total eligible state and local income, sales, and property taxes, but the higher cap will allow a larger portion of those payments to flow through as an itemized deduction before the limit cuts off any excess.
Who benefits most from the higher SALT cap
The distributional impact of the new cap is uneven. Homeowners with substantial property tax bills and higher state income tax liabilities will see the largest dollar gains. For example, a married couple in a high-tax suburb paying $18,000 in property taxes and $15,000 in state income tax previously could deduct only $10,000. Under the $40,400 cap, the same couple can deduct their full $33,000 state and local tax burden, assuming they itemize and have sufficient other deductions such as mortgage interest or charitable contributions.
By contrast, renters in low-tax states or households whose total state and local payments fall below the standard deduction will see little or no direct benefit. The Joint Committee on Taxation’s score suggests that the revenue cost is concentrated among upper-income filers, reflecting the fact that those taxpayers are more likely to itemize and to face large state and local tax bills. Policymakers who supported the change argue that it restores parity for residents of high-tax states who felt disproportionately affected by the 2017 law, while critics contend that the benefits are skewed toward higher earners.
Planning ahead for 2026 filings
Financial planners and tax professionals are already modeling how the higher cap interacts with other provisions that remain in place through the mid-2020s. For some clients, the change could justify revisiting whether to accelerate or defer property tax payments, how to time estimated state income tax payments, and whether bunching charitable contributions into a single year still offers the same leverage when the SALT deduction ceiling is less restrictive.
Taxpayers seeking personalized guidance can use the IRS’s online account tools to monitor their federal payments and transcripts, which helps align withholding and estimated payments with their evolving deduction profile. Those facing complex state and local tax situations, or who receive IRS notices related to itemized deductions, may also rely on the agency’s digital correspondence options to respond securely and track case status.
Ultimately, the higher SALT cap does not guarantee lower taxes for every household, but it restores a more substantial federal offset for residents of high-tax jurisdictions who continue to shoulder significant state and local burdens. As the IRS finalizes forms and instructions for the 2026 filing season, taxpayers who have been constrained by the $10,000 ceiling will want to revisit their itemizing strategy, compare it against the standard deduction, and adjust their financial plans to make the most of the expanded deduction while it remains on the books.
David M. Keller is a finance writer based in Columbus, Ohio, covering personal finance and consumer-focused economic topics. He earned his degree in journalism from Ohio University and began his career reporting on local business and economic trends for a regional media outlet. Since then, he has contributed to a variety of online publications, focusing on clear, practical coverage of topics such as cost of living, debt, and everyday financial decision-making.
