Standard deduction against itemising for a single filer, 2025
This works out one number from the Standard Deduction figures published for 2025. Every amount it uses is below, with the document it was read from. What you enter is your own: this site has no way to check it, and the answer it produces is not a published figure.
This calculates
The standard deduction including the counted age-or-blindness additions, compared with the itemised deductions you enter.
You provide
- Your itemised deductions
- Boxes you can check for 65 or older, or blind (up to 2)
It does not include
- Whether you may claim the standard deduction, every itemised deduction rule, or a complete return.
Not the one you need? The same year also has standard deduction against itemising on a joint return, head of household standard deduction against itemising.
Effective 2025-01-01Source: Publication 501 (2025), Dependents, Standard Deduction, and Filing Information (IRS)Verified 2026-09-04
How it is worked out
The published limit, plus the published addition once for every box you check, less the amount you enter, rounded to the nearest cent. Where what you enter is the larger of the two, the answer is nothing rather than a negative amount.
It uses Single unmarried, $15,750 and Aged blind addition unmarried, +$2,000, published above.
Figures in this colour are computed from the amounts above. They are not published figures and no document states them.
Work it out
The live calculator needs JavaScript. The table below covers common amounts and is computed the same way.
Worked out for common amounts
| Your itemised deductions | Result |
|---|---|
| 0 | $17,750 |
| 10,000 | $7,750 |
| 20,000 | $0 |
| 40,000 | $0 |
How each figure was verified
Each number below was read from a stored copy of the document named beside it, and checked to occur word for word in the quoted sentence. The digest is of that stored text.
Publication 501 (2025), Dependents, Standard Deduction, and Filing Information (IRS)
- Single unmarried
• Single or Married filing separately—$15,750
- Aged blind addition unmarried
b. If born before January 2, 1961, or blind, multiply $2,000 ($1,600 if married) by the number in the box above.
Every 2025 Standard Deduction figure · Standard Deduction in every year · Every calculator on this site