Schedule A is the form you attach to your tax return if you want to deduct itemized expenses instead of taking the standard deduction
Schedule A is an IRS form that lists specific expenses you paid during the year that reduce your taxable income. You file it alongside your Form 1040 (your main tax return) only if itemizing deductions makes sense for your situation. The IRS lets you choose between two paths: take a standard deduction (a flat amount that depends on your filing status and age) or list out your actual expenses on Schedule A and deduct them instead. Most people take the standard deduction because it is simpler and often larger, but some households save money by itemizing.
The form itself is straightforward—it is a list of categories with blank lines where you write dollar amounts. You add up all the amounts, and that total is what you subtract from your income. The catch is that not every expense counts. The IRS allows deductions only for certain categories: mortgage interest, property taxes, charitable donations, medical expenses above a threshold, and a few others. Gambling losses, car repairs, and groceries do not belong on Schedule A.
Key Takeaways
- Schedule A is optional—you use it only if your itemized deductions add up to more than the standard deduction for your filing status.
- The form lists five main categories: state and local taxes, mortgage interest, charitable contributions, medical expenses, and miscellaneous deductions.
- You must have receipts, bank statements, or written records to back up the amounts you claim, though you do not mail them with your return.
- If you file Schedule A, you cannot also claim the standard deduction in the same year.
The five main deduction categories on Schedule A
State and local taxes (SALT) covers income tax, sales tax, and property tax you paid to your state or local government. You can deduct either the income tax you paid or the sales tax you paid, but not both. There is a cap: the total of all SALT deductions cannot exceed $10,000 per year, no matter your income.
Mortgage interest is the interest portion of your monthly mortgage payment (not the principal). You can deduct interest on up to $750,000 of mortgage debt. If you took out your mortgage before December 16, 2017, the limit is $1,000,000. You receive a Form 1098 from your lender each January showing how much interest you paid the previous year.
Charitable contributions include donations to may have access to organizations—churches, nonprofits, schools, and similar groups. You can deduct cash donations and the fair market value of items you donated (clothing, furniture, household goods). You need a receipt from the charity or, for items, a written record of what you gave and its estimated value.
Medical and dental expenses cover costs your insurance did not pay: doctor visits, prescriptions, dental work, glasses, hearing aids, and therapy. You can deduct only the amount that exceeds 7.5% of your adjusted gross income (AGI). If your AGI is $60,000 and your medical expenses were $6,000, you can deduct only $1,500 ($6,000 minus $4,500, which is 7.5% of $60,000).
Miscellaneous deductions are less common and have strict limits. They include tax preparation fees, investment advisory fees, and union dues, but only if they exceed 2% of your AGI. Many taxpayers skip this section because the threshold is high.
How to know whether to itemize or take the standard deduction
The decision comes down to one number: add up all your deductible expenses and compare that total to the standard deduction for your filing status. If your total is higher, itemizing saves you money. If it is lower, take the standard deduction.
The standard deduction amounts change each year. For 2024, the standard deduction is $14,600 for single filers, $29,200 for married filing jointly, and $21,900 for head of household. If you are 65 or older, you get an extra amount added on. Check the IRS website or your tax software for the current year's amounts.
A rough example: suppose you are married filing jointly, you paid $8,000 in property tax, $12,000 in mortgage interest, and gave $3,000 to charity. Your total itemized deductions are $23,000. The standard deduction for 2024 is $29,200, so you would take the standard deduction instead. But if you paid $15,000 in property tax instead, your total would be $30,000, which exceeds $29,200—now itemizing makes sense.
What records you need to keep
The IRS does not require you to attach receipts to your return, but you must keep them for your records in case of an audit. For mortgage interest, your lender sends you a Form 1098 each year—keep that. For property taxes, keep your tax bill or assessment notice. For charitable donations, keep receipts from the organization or a bank statement showing the transfer.
For medical expenses, gather bills, receipts, and explanation-of-benefits statements from your insurance company. For items you donated, take a photo or write down a description and estimated value. The IRS has a guide called "Publication 561" that explains how to value donated items if you need help.
Keep these records for at least three years from the date you file your return. If the IRS audits you, they will ask to see the documentation behind the numbers on your Schedule A.
How to fill out and file Schedule A
If you are using tax software (TurboTax, H&R Block, TaxAct, or similar), the software walks you through Schedule A line by line and calculates your total automatically. You enter the amounts, and the software attaches the form to your return when you file electronically.
If you are filing by hand, you read Schedule A from the IRS website (irs.gov), fill in the dollar amounts in each category, add them up, and write the total on the appropriate line of your Form 1040. Then you mail both forms together.
Most people file electronically through tax software or a tax professional, which is faster and reduces errors. If you file electronically and claim itemized deductions, Schedule A is included automatically in your e-file package.
When itemizing does not make sense
If you rent instead of own a home, you have no mortgage interest to deduct. If you do not donate to charity or your donations are small, you may not reach the standard deduction threshold. If your state has no income tax or low property taxes, itemizing becomes less attractive. Renters and people in low-tax states often find the standard deduction is the better choice.
Some people also cannot itemize at all. If you are claimed as a dependent on someone else's return, you cannot file Schedule A. If you are married and filing separately, your spouse must also itemize (you cannot have one spouse itemize and the other take the standard deduction).
Frequently Asked Questions
Can I deduct my car payment or car insurance on Schedule A?
No. Car payments and insurance are not deductible for personal use vehicles. If you own a business and use a vehicle for business, you can deduct mileage or actual expenses, but that goes on a different form (Schedule C), not Schedule A.
What if I do not have receipts for my charitable donations?
For cash donations under $250, a bank statement or written communication from the charity showing the amount and date is acceptable. For donations of $250 or more, you need a written acknowledgment from the charity. For non-cash donations, keep a receipt or photo and a written description of what you gave.
Can I deduct my property taxes if I rent an apartment?
No. Renters pay property tax indirectly through rent, but they cannot deduct it. Only the person who owns the property and pays the tax bill directly can claim the deduction.
If I itemize one year, do I have to itemize every year?
No. You can choose to itemize one year and take the standard deduction the next year, depending on which is larger. Your choice each year is independent.
What happens if I claim deductions I cannot prove?
If the IRS audits you and you cannot produce receipts or records, they will disallow the deduction and you will owe back taxes plus interest. In some cases, you may also owe a penalty. Keep your records for at least three years.