The standard deduction is a fixed dollar amount you can subtract from your income before calculating federal income tax

The standard deduction is a set amount the IRS lets you deduct from your income each year. Instead of listing out individual deductions (like mortgage interest or charitable donations), you take one lump sum. The IRS adjusts this amount annually for inflation, so it changes each tax year.

You choose between taking the standard deduction or itemizing deductions. Most people take the standard deduction because it is simpler and often results in a lower tax bill. If you itemize, you add up may have access to expenses yourself on Schedule A and use that total instead. You cannot do both in the same year.

The standard deduction amount depends on your filing status, age, and whether anyone can claim you as a dependent. A single filer under 65 gets a different amount than a married couple filing jointly, and both get more if they are 65 or older.

Key Takeaways

  • The standard deduction is a fixed amount you subtract from income; most taxpayers use it instead of itemizing individual deductions.
  • The amount varies by filing status (single, married filing jointly, head of household, etc.) and increases if you are 65 or older or blind.
  • You cannot claim both the standard deduction and itemized deductions in the same year — you pick whichever gives you the larger tax break.
  • If someone can claim you as a dependent, your standard deduction is usually lower and calculated differently.
  • The IRS raises the standard deduction each year to account for inflation, so the number changes on your tax forms annually.

Standard deduction amounts by filing status

The IRS publishes standard deduction amounts for each tax year. These amounts differ based on how you file. A married couple filing jointly receives a higher deduction than a single filer, and a head of household filer falls in between. The amounts also increase if you are 65 or older or legally blind — you get an additional deduction on top of the base amount.

Because the standard deduction changes every year, you need to use the current year's amount when you file. The IRS announces these figures in late 2024 for the 2024 tax year, and again in late 2025 for the 2025 tax year. Your tax software or Form 1040 instructions will show the correct amount for the year you are filing.

If you are claimed as a dependent on someone else's return, your standard deduction is calculated using a different formula — usually the greater of $1,300 or your earned income plus $450, but capped at the standard deduction for your filing status. This rule prevents dependents from getting the full standard deduction when they have little or no income.

When the standard deduction saves you more money than itemizing

You should take the standard deduction if the total of your itemized deductions is less than the standard deduction amount. For example, if you are single and the standard deduction is $14,600, but your mortgage interest, property taxes, and charitable donations add up to only $12,000, you are better off taking the standard deduction.

Most taxpayers fall into this category. Itemizing only makes sense if you have significant deductible expenses — typically a mortgage with high interest payments, large charitable contributions, high state and local taxes, or substantial medical expenses. If your deductible expenses are scattered and small, the standard deduction is almost always the better choice.

The standard deduction also means you do not have to keep detailed records of every deductible expense. You straightforward report it on your tax return and move forward. This simplicity is one reason the IRS created the standard deduction in the first place.

How the standard deduction affects your taxable income

Your taxable income is what remains after you subtract the standard deduction from your total income. The IRS then applies tax rates to this taxable income to calculate what you owe. A larger standard deduction means a smaller taxable income and a lower tax bill.

For example, if you earned $50,000 and the standard deduction is $14,600, your taxable income is $35,400. The tax you owe is based on $35,400, not $50,000. If the standard deduction were $12,000 instead, your taxable income would be $38,000 — and you would owe more tax on that higher amount.

This is why the annual increase to the standard deduction matters. Even if your income stays the same, a higher standard deduction can lower your tax bill straightforward because inflation has raised the deduction amount.

Standard deduction for dependents and special situations

If you can be claimed as a dependent on your parent's or guardian's tax return, your standard deduction is limited. The IRS uses a formula: your standard deduction is the greater of $1,300 or your earned income (wages, salary, self-employment income) plus $450, but it cannot exceed the standard deduction for your filing status.

This rule prevents a dependent with a part-time job from claiming the full standard deduction. A 16-year-old earning $8,000 from a summer job would have a standard deduction of $8,450 (their $8,000 earned income plus $450), not the full standard deduction for a single filer.

If you are married and file jointly, you both must use the same method — either both take the standard deduction or both itemize. You cannot split the difference. Similarly, if you are a nonresident alien, your standard deduction is zero unless you are married to a U.S. citizen or resident alien and choose to file jointly.

Standard deduction versus itemizing: when to itemize instead

Itemizing makes sense when your deductible expenses exceed the standard deduction. Common itemized deductions include mortgage interest, state and local taxes (capped at $10,000 per year), charitable contributions, and medical expenses above 7.5% of your adjusted gross income.

Homeowners with large mortgages and high property taxes are the most likely to itemize. Someone who owns a home in a high-tax state, donates significantly to charity, and has medical expenses might find that itemizing produces a larger deduction than the standard amount.

To decide, add up your potential itemized deductions and compare the total to the standard deduction for your filing status. If the itemized total is higher, itemize. If the standard deduction is higher, take it. Many tax software programs calculate both scenarios automatically so you can see which is better.

How inflation affects the standard deduction each year

The IRS adjusts the standard deduction annually using a measure of inflation. This means the amount you can deduct grows slightly each year, even if Congress does not pass new tax legislation. The adjustment is tied to the Consumer Price Index, which tracks changes in the cost of living.

This annual increase is one reason your tax situation can change from year to year even if your income stays the same. A higher standard deduction can push you into a lower tax bracket or reduce your taxable income enough to change whether you owe tax at all.

The Tax Cuts and Jobs Act of 2017 roughly doubled the standard deduction and is set to expire after 2025 unless Congress extends it. If the law expires as scheduled, the standard deduction will drop significantly in 2026, though it will still be adjusted annually for inflation going forward.

Frequently Asked Questions

Can I claim both the standard deduction and itemized deductions?

No. You must choose one or the other for each tax year. You cannot claim part of the standard deduction and part of itemized deductions. Pick whichever method gives you the larger total deduction.

What if I am 65 or older — do I get a bigger standard deduction?

Yes. If you are 65 or older, you receive an additional deduction amount on top of the base standard deduction for your filing status. If you are blind, you also get an additional amount. These extra amounts are adjusted annually for inflation, just like the base standard deduction.

Does the standard deduction change if I get married or divorced?

Yes. Your filing status determines your standard deduction amount. If you marry, you may file jointly (higher deduction) or separately (lower deduction). If you divorce, you typically return to single or head of household status, which changes your standard deduction.

What happens to my standard deduction if I am claimed as a dependent?

Your standard deduction is limited to the greater of $1,300 or your earned income plus $450, capped at the standard deduction for your filing status. This means dependents with little or no income get a smaller deduction than independent filers.

Will the standard deduction go down after 2025?

The current standard deduction amounts are set to expire after 2025 unless Congress extends them. If they expire, the standard deduction will decrease significantly in 2026, though it will still be adjusted annually for inflation. Congress may extend the current amounts before that date.