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Standard Deduction

Tax

US Federal Standard Deduction

A flat dollar amount the IRS lets you subtract from your income before calculating federal tax, without needing to itemize individual expenses. Most US filers take it because it beats their itemized total.

Definition

The standard deduction is a fixed dollar amount the IRS subtracts from your gross income before applying tax brackets, no receipts or Schedule A required. Every filer gets one automatically; it's the fallback that applies unless you choose to itemize instead.

The amount depends on your filing status, and it's indexed for inflation each year, so it rises even if Congress doesn't pass new legislation. It's separate from above-the-line deductions like IRA contributions or student loan interest, both apply on the same return.

Because it lowers your taxable income directly, a bigger standard deduction means less income gets taxed at your top bracket. The Federal Income Tax Calculator applies it automatically once you enter your filing status.

Formula

Taxable Income = Gross Income − Standard Deduction (or Itemized Deductions, whichever is larger) − Other Adjustments

You don't calculate the standard deduction yourself, the IRS sets one flat number per filing status per year. The only math involved is deciding whether itemizing beats it.

Worked Example

Maria files as Head of Household in 2026 with $68,000 in wages. Her standard deduction is $22,500.

  • Taxable income before other adjustments: $68,000 − $22,500 = $45,500
  • If she'd itemized $16,000 in mortgage interest and state taxes instead, she'd have left $6,500 of deductions on the table

At a 22% marginal rate, that gap in deductions is worth roughly $1,430 in tax she'd have overpaid by itemizing unnecessarily.

Key Things to Know

  • Adjusted for inflation annually. The 2026 amounts are $15,000 (single), $30,000 (married filing jointly), $15,000 (married filing separately), and $22,500 (head of household). Don't reuse last year's number when estimating this year's return.
  • Age and blindness add-ons stack. A single filer who's 65+ and blind gets two $1,550 add-ons on top of the base $15,000, not just one.
  • You can't mix and match. It's the full standard deduction or your full itemized total, not a blend of both on the same return.
  • Dependents have a reduced standard deduction. If someone can claim you as a dependent, your standard deduction is capped at the greater of $1,350 or your earned income plus $450, up to the normal single-filer amount.
  • The SALT cap changed the math for many homeowners. Since state and local tax deductions are capped at $10,000, fewer filers in high-tax states clear the itemizing threshold than before the cap existed.

Related Calculators

Federal Income Tax Calculator →Calculate your 2024 US federal income tax owed, effective rate, and marginal bracket by filing status, with standard or itemized deductions.
Tax Refund Estimator →Estimate your 2024 federal tax refund or amount owed based on income, filing status, deductions, and federal withholding — under 60 seconds.
Self-Employment Tax Calculator →Calculate Social Security and Medicare self-employment tax for freelancers, 1099 contractors, and sole proprietors, for tax year 2024 instantly.

Frequently Asked Questions

Does the standard deduction change every year?
It does. The IRS adjusts it annually for inflation, so the numbers you used last April aren't the ones you'll use this year. For 2026, a single filer gets $15,000 and a married couple filing jointly gets $30,000, both up from the prior year.
Can I take the standard deduction and still claim other tax breaks?
Yes, most credits and above-the-line deductions work independently of the standard deduction. Things like the Child Tax Credit, student loan interest deduction, and IRA contributions still apply on top of it. What you can't do is combine the standard deduction with itemized deductions on the same return.
How do I know if itemizing beats the standard deduction?
Add up your Schedule A expenses, mortgage interest, state and local taxes up to the $10,000 cap, and charitable gifts, then compare the total to your standard deduction amount. If your itemized total is lower, taking the standard deduction just saves paperwork for the same or better result. Run both scenarios through the [Federal Income Tax Calculator](/us/federal-income-tax-calculator/) rather than guessing.
Why do most people take the standard deduction instead of itemizing?
Since the 2017 tax law nearly doubled the standard deduction, itemized expenses rarely clear the threshold unless you own a home with a large mortgage or live in a high-tax state. Around 90% of filers now take the standard route because it beats their itemized total without the extra recordkeeping.
Is the standard deduction the same for everyone in a filing status?
Mostly, with one exception: filers who are 65 or older, or blind, get an add-on amount. A single filer 65+ adds $1,550 to their base deduction, and each qualifying spouse on a joint return adds $1,250.