Every tax filer makes a binary choice: take the standard deduction or itemize deductions on Schedule A. For 2026, the standard deduction is $15,700 for single filers, $31,400 for married filing jointly, and $23,500 for head of household. These amounts are adjusted annually for inflation and represent the IRS's built-in estimate of your deductible expenses. If your actual deductible expenses exceed the standard deduction, itemizing saves you money — your taxable income drops by the difference, and you save that difference multiplied by your marginal tax rate. If your itemized deductions total $38,000 and you're married filing jointly, you gain an extra $6,600 in deductions over the standard ($38,000 - $31,400), saving $1,452 at the 22% bracket or $2,112 at the 32% bracket. About 87% of taxpayers take the standard deduction, largely because the Tax Cuts and Jobs Act roughly doubled it in 2018. But that means 13% of filers — roughly 20 million households — save more by itemizing, and many more are close to the threshold without realizing it.
The three biggest itemized deductions are state and local taxes (SALT), mortgage interest, and charitable contributions. The SALT deduction lets you deduct state income taxes (or sales taxes) plus local property taxes, but it's capped at $10,000 per return ($5,000 if married filing separately). This cap, introduced by the TCJA, is the primary reason many former itemizers switched to the standard deduction. Before the cap, a homeowner in New Jersey paying $12,000 in property taxes and $8,000 in state income tax could deduct $20,000 in SALT alone. Now they deduct only $10,000. The mortgage interest deduction applies to interest paid on up to $750,000 of acquisition debt (for mortgages originated after December 15, 2017). At a 6.5% interest rate on a $400,000 mortgage, you'd pay roughly $25,800 in interest during the first year — a significant deduction. Home equity loan interest is deductible only if the loan funds were used to buy, build, or substantially improve the home securing the loan.
Charitable contributions are the third major category and the one with the most flexibility. Cash donations to qualified charities are deductible up to 60% of your adjusted gross income. Donations of appreciated stock held more than one year are deductible at fair market value up to 30% of AGI, with the added benefit of avoiding capital gains tax on the appreciation. For a married couple in the 32% bracket who donates $10,000 in stock that cost them $3,000, they deduct the full $10,000 (saving $3,200 in federal tax) and avoid $1,036 in capital gains tax on the $7,000 gain — a total tax benefit of $4,236 on a $10,000 contribution. Bunching charitable donations — giving two or three years' worth in a single year — is a powerful strategy for taxpayers near the itemizing threshold. If you normally give $8,000 per year, bunching $24,000 into one year pushes your itemized total well above the standard deduction that year, while you take the standard deduction in the other two years.
Medical and dental expenses are deductible to the extent they exceed 7.5% of your adjusted gross income. This threshold makes the deduction inaccessible for most people: on an AGI of $100,000, you'd need more than $7,500 in unreimbursed medical expenses before a single dollar becomes deductible. However, in years with major medical events — surgery, orthodontics, ongoing treatment for a serious condition, or long-term care expenses — the deduction can be substantial. If your AGI is $80,000 and you have $15,000 in qualifying medical expenses, you deduct $15,000 - $6,000 (7.5% of AGI) = $9,000. Qualifying expenses include health insurance premiums you pay with after-tax dollars (not employer-provided premiums), prescription medications, dental work, vision care, mental health treatment, and transportation to medical appointments at 22 cents per mile for 2026.
The breakeven analysis is straightforward arithmetic. Add up your SALT (capped at $10,000), mortgage interest, charitable contributions, and medical expenses above the 7.5% AGI floor. If the total exceeds your standard deduction, itemize. For a married couple with a $500,000 mortgage at 6.5% interest ($32,200 interest in year one), $10,000 in SALT, and $3,000 in charitable gifts, total itemized deductions equal approximately $45,200 — well above the $31,400 standard deduction, saving an additional $13,800 × their marginal rate. At the 24% bracket, that's $3,312 in additional tax savings from itemizing. Conversely, a married couple renting an apartment with $7,000 in SALT and $2,000 in charitable giving has only $9,000 in itemized deductions — far below $31,400. The standard deduction is their clear winner by over $22,000.
Several strategies can push you over the itemizing threshold in a given year. Bunching charitable donations is the most common, as mentioned. Prepaying property taxes or state estimated taxes before December 31 accelerates SALT deductions into the current year (though this is limited by the $10,000 cap). Donor-advised funds let you take a large charitable deduction in the bunching year while distributing grants to charities over multiple years. Timing elective medical procedures into a year when you'll exceed the 7.5% AGI floor maximizes the medical deduction. For taxpayers right around the threshold, alternating years — itemizing in even years and taking the standard deduction in odd years — can produce higher lifetime deductions than taking the same approach every year. Finally, remember that state tax returns have their own rules: some states require you to itemize on the state return if you itemize federally, while others allow you to choose independently. Check your state's rules, as the optimal federal choice may not be optimal for state purposes.