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Compare taking the standard deduction versus itemizing on your US federal return. Enter mortgage interest, state taxes, charitable contributions, and medical expenses to find the larger deduction.
When filing a US federal return, taxpayers choose between the standard deduction (a flat amount set by the IRS each year based on filing status) or itemizing actual qualifying expenses on Schedule A. For 2024, the standard deduction is $14,600 for single filers, $29,200 for married filing jointly, and $21,900 for head of household. Itemized deductions include mortgage interest on up to $750,000 of debt, state and local taxes (SALT) capped at $10,000, qualified charitable contributions, and unreimbursed medical expenses above 7.5% of adjusted gross income. Enter your filing status and each deduction category; the calculator totals your potential itemized deductions, compares them against your standard deduction, recommends the larger option, and shows the tax savings from choosing correctly.
Itemizing makes sense when your qualifying deductions exceed the standard deduction for your filing status ($15,000 single / $30,000 married filing jointly in 2025). Common situations: homeowners with significant mortgage interest, people in high-tax states hitting the $10,000 SALT cap, or those with large charitable contributions or medical expenses.
The Tax Cuts and Jobs Act of 2017 capped the deduction for state and local taxes (property tax + income or sales tax) at $10,000 per household, regardless of filing status. This cap significantly affects residents of high-tax states like California, New York, and New Jersey, where property and income taxes alone often exceed $10,000.
Only medical and dental expenses exceeding 7.5% of your Adjusted Gross Income (AGI) are deductible. For example, if your AGI is $80,000, only expenses above $6,000 count. Qualifying expenses include premiums for insurance you paid out-of-pocket, doctor visits, prescriptions, dental work, and long-term care.
It depends. The Tax Cuts and Jobs Act nearly doubled the standard deduction, making itemizing less common. Mortgage interest is now deductible only on the first $750,000 of loan principal (down from $1 million). If your mortgage interest plus other deductions exceeds the standard deduction, itemizing still saves money.
If one spouse itemizes, the other must also itemize - even if their itemized total is less than the standard deduction. This is a key reason why Married Filing Separately is rarely beneficial. If you file separately, you also lose access to several credits and the SALT cap still applies at $5,000 per person.
Have more questions? These calculators provide estimates for educational purposes only. For personalized financial advice, consult with a qualified financial professional. See our disclaimer for more information.