What Are Itemized Deductions?
In plain English
Itemized deductions are individual qualifying expenses you list on Schedule A to reduce your taxable income. Categories include mortgage interest, state and local taxes (capped at $10,000), charitable contributions, and qualifying medical expenses exceeding 7.5% of adjusted gross income. You itemize only when your total exceeds the standard deduction for your filing status.
What Expenses Can You Deduct When You Itemize?
Deductible expenses include mortgage interest on up to $750,000 of debt, state and local income or sales taxes and property taxes (combined limit of $10,000), charitable donations to qualified organizations, and unreimbursed medical and dental expenses above 7.5% of AGI. Casualty and theft losses from federally declared disasters also qualify.
When Does Itemizing Make More Financial Sense Than the Standard Deduction?
Itemizing pays off when your qualifying expenses exceed the standard deduction for your filing status. Homeowners with large mortgages, taxpayers in high-tax states, and generous donors most often cross this threshold. Run the numbers both ways — or use tax software — to determine which method saves more each year.
What Records Do You Need to Itemize Deductions?
Keep Form 1098 for mortgage interest, property tax bills, receipts for charitable donations (and written acknowledgment for gifts over $250), and explanation of benefits statements from your insurer for medical costs. The IRS can audit any deduction, so organized documentation is essential for every line item on Schedule A.
Frequently asked questions
Can both spouses itemize if filing separately?
If one spouse itemizes on a married-filing-separately return, the other must also itemize — they cannot take the standard deduction. This rule often makes filing separately less advantageous, so compare outcomes carefully before choosing separate returns.
Is there a limit on itemized deductions?
The Pease limitation that previously reduced itemized deductions for high earners was suspended by the 2017 tax law. The main current cap is the $10,000 SALT limit on state and local taxes. Other individual deduction categories carry their own thresholds, such as the 7.5% AGI floor for medical expenses.
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Related terms
Standard Deduction
The standard deduction is a fixed dollar amount that reduces your taxable income without requiring you to list individual expenses. Most Americans claim it instead of itemizing.
Tax Deduction
A tax deduction reduces your taxable income, lowering the amount of income subject to tax. The actual tax savings depend on your marginal tax bracket.
Adjusted Gross Income (AGI)
Adjusted gross income is your total income minus specific above-the-line deductions. It is the key figure on your tax return that determines eligibility for many credits, deductions, and financial programs.
Charitable Deduction
A charitable deduction allows taxpayers who itemize to deduct donations made to qualifying nonprofit organizations. The deduction reduces taxable income and provides a tax incentive for generosity.
Property Tax
Property tax is an annual tax levied by local governments on the assessed value of real estate and, in some jurisdictions, personal property like vehicles. It is a primary funding source for schools and public services.