How the Standard Deduction Reduces What You Owe in Taxes
What the standard deduction does
The standard deduction is a fixed dollar amount the IRS lets you subtract from your income before calculating how much tax you owe. Instead of listing out every expense you paid during the year, you take one lump sum off the top. The lower your taxable income becomes, the less tax you pay.
Think of it this way: if you earned $30,000 and the standard deduction is $13,850, you only pay tax on $16,150. You do not have to prove where that $13,850 went or keep receipts for it — the IRS just lets you have it.
The standard deduction amount changes every year and depends on your age, filing status, and whether anyone can claim you as a dependent. A single 25-year-old has a different standard deduction than a married couple filing jointly, or a 67-year-old filing alone.
Key Takeaways
- The standard deduction is a set amount you subtract from your income; the IRS publishes the current year's amount on its website and the Form 1040 instructions.
- Your standard deduction depends on whether you file as single, married filing jointly, head of household, or another status — and whether you are 65 or older.
- If your standard deduction is larger than the total of all your itemized deductions, you should take the standard deduction instead.
- Most people take the standard deduction because it is simpler and results in a lower tax bill than itemizing.
Standard deduction amounts by filing status
The IRS sets different standard deduction amounts depending on how you file. For the 2024 tax year (the return you file in 2025), the amounts are:
| Filing Status | Standard Deduction |
|---|---|
| Single | $13,850 |
| Married Filing Jointly | $27,700 |
| Married Filing Separately | $13,850 |
| Head of Household | $20,800 |
| may have access to Widow(er) | $27,700 |
These amounts increase slightly each year to account for inflation. You can find the current year's amounts in the instructions that come with Form 1040, or on the IRS website under "Standard Deduction".
Higher standard deduction if you are 65 or older
If you are 65 or older on December 31 of the tax year, you get an additional amount added to your standard deduction. For 2024, that extra amount is $1,850 if you file as single or head of household, and $1,500 if you file as married filing jointly.
If you are both 65 and blind, you get both additions — so your standard deduction goes up by $3,700 (single) or $3,000 (married filing jointly). You do not need to prove blindness with a doctor's note; the IRS takes your word for it on your return.
Standard deduction versus itemizing
You have a choice: take the standard deduction, or itemize your deductions instead. Itemizing means adding up specific expenses you paid — mortgage interest, property taxes, charitable donations, medical bills over a certain threshold — and deducting that total instead.
You should itemize only if your itemized deductions add up to more than your standard deduction. If you paid $8,000 in mortgage interest and $3,500 in property taxes but your standard deduction is $13,850, you come out ahead by taking the standard deduction. The IRS lets you choose whichever is larger.
Most people take the standard deduction because it is simpler — no receipts to organize, no forms to fill out beyond the basic 1040 — and because their expenses do not add up to more than the standard amount anyway.
When you cannot take the standard deduction
If someone else claims you as a dependent on their tax return, your standard deduction is smaller. The amount depends on your income and filing status, but it is usually limited to either your earned income plus $450, or $1,300, whichever is larger — not the full standard deduction amount.
This affects many people in their late teens and early twenties whose parents still claim them, or adult children whose parents claim them for other reasons. If you think this applies to you, check with whoever files your parents' return before you file your own.
Nonresident aliens have different rules and typically cannot take the standard deduction at all. If you are not a U.S. citizen or permanent resident, you will need to look up the specific rules for your visa status.
How to claim the standard deduction on your return
If you file Form 1040 on paper, you check a box on the form that says "Standard deduction" and enter the amount. If you use tax software, the program usually calculates it for you based on the information you enter about your age and filing status.
You do not have to do anything special or submit extra forms. The standard deduction is built into the basic return. Once you enter it, the software or the IRS subtracts it from your income to get your taxable income, which is what your tax is actually based on.
Frequently Asked Questions
Does the standard deduction change every year?
Yes. The IRS adjusts the standard deduction each year for inflation. The 2024 amounts are different from 2023, and the 2025 amounts will be different again. You use the standard deduction for the year you are filing for, not the year you earned the money.
What if I have both W-2 income and self-employment income?
The standard deduction works the same way regardless of where your income comes from. You subtract it from your total income — W-2 wages plus self-employment earnings — to get your taxable income. Self-employed people also get to deduct half of their self-employment tax separately, but that is a different deduction.
Can I take the standard deduction if I have no income?
If you have no income, you do not owe tax and do not need to file a return. However, if you had taxes withheld from paychecks or made estimated tax payments, you may want to file anyway to get a refund. The standard deduction does not matter in this situation.
What happens if I am claimed as a dependent but I also have my own income?
You can still file a return and take a standard deduction, but it will be smaller than the full amount. Your standard deduction is limited to your earned income plus $450 (or $1,300 if that is larger). Talk to the person claiming you as a dependent before you file to make sure you are both on the same page.