How to compare the standard and itemized deductions
The United States has no deduction for credit card or debit card spending, so the Korean year-end card deduction has no direct counterpart. What American taxpayers actually choose between is the standard deduction and itemized deductions, and this calculator compares the two using the amounts you paid during the year.
Itemizing adds up home mortgage interest, state and local taxes, charitable contributions and medical costs. State and local taxes are capped under 26 U.S.C. 164(b)(6), and medical expenses count only above 7.5% of adjusted gross income under 26 U.S.C. 213, so both limits are applied before the totals are compared.
Business spending is handled separately. Ordinary and necessary business expenses under 26 U.S.C. 162 reduce business income on Schedule C whether or not you itemize, which is why that saving is shown on its own line. Figures reflect the 2026 tax year.
The standard deduction and the SALT cap are indexed or amended from year to year, so both are editable fields rather than fixed numbers. Results are an estimate at a flat marginal rate and do not account for phaseouts, the alternative minimum tax or state returns. Check current IRS instructions before filing.
Frequently Asked Questions
Personal consumer spending is not deductible in the United States. Only specific categories such as mortgage interest, state and local taxes, charitable gifts and large medical costs qualify, whatever payment method you used.
Ordinary and necessary business expenses are deductible under 26 U.S.C. 162 regardless of which card paid for them, as long as you keep records separating business from personal use. They reduce business income rather than being itemized deductions.
Itemizing only helps when the total exceeds the standard deduction, and it requires keeping receipts and documentation. Bunching two years of charitable gifts or elective medical costs into one year is a common way to cross the line.