The 2026 SALT deduction limit is $40,400 before shrinking above $505,000 modified AGI
The federal itemized deduction for state and local taxes has a $40,400 overall ceiling for most 2026 returns. Once modified adjusted gross income exceeds $505,000, that ceiling begins to fall, although it cannot drop below $10,000; married taxpayers filing separately use half-sized figures. Free retirement updates: Want plain-English help keeping more of your money in…