The standard deduction is the default, not automatically the better deal. Before you file, total your mortgage interest, state and local taxes, charitable gifts, and medical bills beyond 7.5% of your adjusted gross income. If that sum tops the standard deduction for your filing status, itemize.
For most filers, the answer has been the standard deduction for years. After the 2017 tax law nearly doubled the standard deduction, the share of returns that itemized fell from 31% in 2017 to 8% in 2022, according to the Tax Policy Center. Taking it became a habit.
The math has shifted again. Starting with 2025 returns, the cap on deductible state and local taxes jumped from $10,000 to about $40,000 for most filers, and it rises slightly each year through 2029. If you pay high property and state income taxes, that change alone can push your itemized total past the standard deduction, especially with mortgage interest on top.
Married couples who file separately face one trap. If one spouse itemizes, the IRS won’t let the other take the standard deduction at all, so run the comparison for the household rather than for each return.
The numbers are easy to find. Your lender reports mortgage interest on Form 1098, property tax shows up on your escrow statement or county bill, and the state income tax withheld from your pay is on your W-2. Add your charitable receipts and any medical and dental costs above 7.5% of your adjusted gross income. Then compare the total to the standard deduction for your filing status, which the IRS adjusts for inflation each year.
If the two land close, timing can tip it. Giving two years of donations in one year can carry that year over the line, and you take the standard deduction the next year as usual.
Keep your donation receipts even if you don’t itemize. Starting with 2026 returns, you can deduct up to $1,000 in qualifying charitable gifts, or $2,000 on a joint return, while taking the standard deduction.
Treat the choice as a calculation you redo every spring, not a label. A new mortgage, a year of big medical bills, or a move to a high-tax state can each flip the answer.
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