Standard Deduction vs Itemized Deductions on a Federal Tax Return
Take whichever deduction is larger. The standard deduction is a flat amount set by your filing status, and itemizing only pays off when your allowable deductions add up to more than that flat amount. That one comparison settles the standard deduction vs itemized deduction choice on any return where both options are open to you.
Here the number you need to find is the total of your Schedule A items. Deductions reduce your taxable income, according to the Internal Revenue Service (IRS). In general, you either take the standard deduction or itemize, and you pick one method for each return.
Start from the flat amount for your filing status. Itemizing is the alternative you test against it.
Standard Deduction vs Itemized Deductions: Side-by-Side
| Standard Deduction | Itemized Deductions | |
|---|---|---|
| Who it is for | Filers whose standard amount is larger than their allowable itemized total, and who are allowed to use it | Filers whose allowable Schedule A total is larger, plus filers who cannot use the standard deduction at all |
| How the amount is set | A flat amount based on filing status, with an additional amount for filers 65 and older or blind, adjusted each year for inflation | Not published |
| What you must track or document | Your filing status, your age, and whether you are blind | Every expense you add, such as tax bills, mortgage interest, charity gifts, medical bills, and disaster or gambling losses |
| Schedule or form used | No Schedule A; the flat amount for your filing status applies | Schedule A (Form 1040) |
| Common deductions that count | None to add up; the amount does not depend on what you spent | State and local income or sales taxes, real and personal property taxes, mortgage interest, charity gifts, disaster losses, and certain gambling losses and medical expenses |
| When it wins | When it is larger than your allowable itemized total, or when the two are equal | When your allowable itemized total is larger, or when your standard deduction is limited because someone claims you as a dependent |
| Filing statuses and restrictions | Not available if you file separately and your spouse itemizes, file a short-year return after an accounting period change, are a nonresident or dual-status alien (spouse-election exception), or file for an estate, trust, common trust fund, or partnership | Required for anyone barred from the standard deduction |
Which should you choose?
Take the standard deduction if your allowable Schedule A total comes out smaller than the flat amount for your filing status, or equal to it. It needs only your filing status, your age, and whether you are blind.
Itemize if your capped Schedule A total is larger, or if your standard deduction is limited because another taxpayer claims you as a dependent. The standard deduction recommendation does not serve married people filing separately whose spouse itemizes, nonresident or dual-status aliens outside the spouse-election exception, filers of short-year returns after an accounting period change, or estates, trusts, common trust funds, and partnerships.
Those filers must itemize, so their job is to document every allowable Schedule A item. Our answer flips toward itemizing in a year with heavy mortgage interest, property taxes, charitable gifts, or medical bills, because those costs can push your Schedule A total past the flat amount.
Total your Schedule A items, look up the current standard amount for your filing status on IRS Topic 501, and claim the larger figure in the standard deduction vs itemized deduction comparison.
How to Decide on Standard Deduction vs Itemized Deduction
You should itemize when your total allowable itemized deductions are greater than your standard deduction, and take the standard deduction in every other case where you are allowed to use it. The IRS states the rule that way in Topic 501. A second trigger applies too: you must itemize if you cannot use the standard deduction at all.
Start with the standard side. The amount depends on your filing status: single, married filing separately, married filing jointly, head of household, or qualifying surviving spouse. If you are 65 or older, or blind, you may get an additional amount on top of the base figure.
The IRS adjusts the standard deduction every year for inflation. A figure copied from an old return may be wrong for the year you are filing. Look up the current amount for your filing status on IRS Topic 501 before you compare anything.
Then build the itemized side. Add up each allowable expense you paid during the year in the Schedule A categories: state and local income or sales taxes, real property taxes, personal property taxes, mortgage interest, disaster losses, gifts to charity, and certain gambling losses and medical expenses.
Put the two totals side by side. If the Schedule A total is larger, itemize. If the standard deduction is larger, or the two totals match, take the standard deduction.
See our Tax Deductions Checklist before you start adding.
When the Standard Deduction Wins
The standard deduction wins whenever it is larger than your allowable itemized total and nothing in your filing situation bars you from using it. That happens when your Schedule A categories add up to a small figure. A year with no mortgage interest, few gifts to charity, and no disaster or gambling losses is one example.
The additional amount for filers who are 65 and older or blind raises the standard figure. A higher standard figure means your itemized total has to be higher before itemizing comes out ahead. If either condition applies to you, include that additional amount before you compare.
You need your filing status and, where they apply, your age and whether you are blind. You do not total itemized categories.
For other ways to prepare your return, see our Tax Tips guide.
When Itemizing Wins
Itemizing wins when your allowable Schedule A deductions add up to more than the standard deduction for your filing status.
Group the categories as you add them. Taxes paid include state and local income or sales taxes, real property taxes, and personal property taxes. Mortgage interest and gifts to charity each form their own group. See also our guide on whether church donations are tax deductible.
The last group covers losses and health costs: disaster losses, certain gambling losses, and certain medical expenses. Only certain medical expenses count; see Topic 502. If you pay health costs through an account, our HSA vs FSA comparison explains the two options.
Itemized deductions are subject to dollar limitations. The capped total is the number you compare to the standard deduction.
Records to Keep If You Itemize
Itemized deductions go on Schedule A (Form 1040), so keep the paperwork behind every figure you add.
Build a simple worksheet before you touch the return. The total of your allowable items on that worksheet is the figure you hold up against the standard amount.
Our Common Tax Filing Mistakes guide covers other errors to check before you file.
Filing Situations That Rule Out the Standard Deduction
Some filers cannot take the standard deduction at all, and for them itemizing is required whatever the totals show. You cannot use the standard deduction if you are married filing separately and your spouse itemizes. The same bar applies if you file a return for less than 12 months because of a change in accounting period.
Nonresident aliens and dual-status aliens also cannot take the standard deduction, with an exception tied to a spouse election. Read the exact terms of that exception on IRS Topic 501 before you assume it covers you. Returns filed for an estate, trust, common trust fund, or partnership cannot use the standard deduction either.
The married filing separately rule changes the math for couples. If your spouse itemizes on a separate return, you must itemize too, even if your own Schedule A total sits far below the standard amount you would otherwise get. Before either of you files separately, add up both itemized totals.
For these filers, the comparison step drops out. The work shifts to building the most complete allowable Schedule A total you can document.
Dependents and a Limited Standard Deduction
If another taxpayer claims you as a dependent, your standard deduction may be limited, and that can make itemizing the better choice.
The usual comparison misleads here. If someone claims you, compare your itemized total against your limited standard amount. Do not compare it against the full amount for your filing status.
Find the limited figure on IRS Topic 501, then run the same side-by-side test. If you paid state or local taxes, gave to charity, or had qualifying medical costs on your own, those items may be enough to tip the result.
Mistakes in the Standard Deduction vs Itemized Deduction Comparison
One way to get this comparison wrong is to use a standard deduction figure from a prior year. The IRS adjusts the amount annually for inflation, so look up the current figure every time you file.
Counting raw spending is the next trap. Itemized deductions are subject to dollar limitations, and an uncapped total can make itemizing look better than it is.
Leaving out the additional amount for filers 65 and older or blind does the opposite. It makes the standard side look smaller and can push you toward itemizing when the flat amount would have been larger.
You also cannot claim both methods on one return. Pick one, and if you itemize, let Schedule A carry the whole deduction.
Couples filing separately cannot treat the decision as two independent choices. If one spouse itemizes, the other must itemize too.
To see how different kinds of income are taxed, read our Ordinary Income vs Capital Gains Tax comparison. Your next step is concrete: total your capped Schedule A items and set the result next to the standard amount for your filing status.
Frequently asked questions
Should I take the standard deduction or itemize?
Take whichever is larger. The standard deduction is a flat amount based on your filing status, and you should itemize on Schedule A only if your total allowable itemized deductions are greater than that amount. You must also itemize if you cannot use the standard deduction, for example when you file separately and your spouse itemizes.
Can I take both the standard deduction and itemize?
No. You choose one method for each return. Add up your allowable Schedule A items, compare that total to the standard deduction for your filing status, and claim only the larger of the two.
Can I switch between standard and itemized from year to year?
Yes. The choice is made on each return, so run the comparison again every year. The standard amount changes with inflation, and your Schedule A total changes with what you paid, so last year's answer may not hold this year.
What if my spouse itemizes and we file separately?
You must itemize too. If you are married filing separately and your spouse itemizes, you cannot take the standard deduction, even if your own itemized total is small. Compare both spouses' totals before deciding to file separately.
Does the standard deduction change every year?
Yes. The IRS adjusts the standard deduction annually for inflation, and filers who are 65 and older or blind may get an additional amount. Look up the current figure for your filing status on IRS Topic 501 before you compare it to your itemized total.
Sources
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