A tax deduction reduces your taxable income — which reduces the amount of tax you owe. If you’re in the 22% tax bracket and take a $1,000 deduction, you save $220 in taxes. Understanding which deductions you qualify for and whether to take the standard deduction or itemize is one of the most practical tax decisions you make each year.
The Standard Deduction
The standard deduction is a flat dollar amount the IRS lets you subtract from your income without any documentation required. It’s the simpler option and the right choice for most taxpayers.
2024 standard deduction amounts:
- Single or Married Filing Separately: $14,600
- Married Filing Jointly or Qualifying Surviving Spouse: $29,200
- Head of Household: $21,900
If you’re 65 or older, or blind, you get an additional standard deduction on top of the base amount:
- Single or Head of Household: +$1,950 per qualifying condition
- Married Filing Jointly: +$1,550 per qualifying condition per spouse
So a single filer who is 65 or older gets a standard deduction of $16,550 in 2024 ($14,600 + $1,950). A married couple both over 65 gets $32,300 ($29,200 + $1,550 + $1,550). This enhanced deduction is one of the most overlooked benefits for older Americans.
Itemized Deductions: When They Beat the Standard Deduction
Itemizing means listing out individual deductible expenses on Schedule A of your tax return. It makes sense only when your total itemizable expenses exceed your standard deduction — otherwise you’re leaving money on the table.
After the Tax Cuts and Jobs Act of 2017 roughly doubled the standard deduction, only about 10% of taxpayers itemize. You’re most likely to benefit from itemizing if you:
- Pay significant mortgage interest on a large or recent home loan
- Pay substantial state and local income and property taxes
- Made large charitable donations
- Had high unreimbursed medical expenses
The major itemizable deductions:
State and Local Taxes (SALT)
You can deduct state and local income taxes (or sales taxes if higher) plus property taxes — but the total SALT deduction is capped at $10,000 per return ($5,000 if married filing separately). For people in high-tax states with expensive homes, this cap limits the deduction significantly.
Mortgage Interest
Interest paid on a mortgage for your primary residence or one second home is deductible on loans up to $750,000 (for loans originated after December 15, 2017; older loans have a $1 million limit). Your lender sends you Form 1098 each January showing how much interest you paid. In the early years of a mortgage, when most of the payment is interest, this deduction can be substantial.
Charitable Contributions
Cash donations to qualifying 501(c)(3) organizations are deductible up to 60% of your AGI. Donations of appreciated property (stock, real estate) are deductible at fair market value up to 30% of AGI. Keep receipts for all donations — any single donation of $250 or more requires a written acknowledgment from the organization. Donations of $500 or more in non-cash property require Form 8283.
Medical and Dental Expenses
You can deduct unreimbursed medical and dental expenses that exceed 7.5% of your AGI. Only the amount above that threshold is deductible. For most people, this threshold is hard to clear unless they had a significant medical event. Qualifying expenses include premiums for health insurance you pay yourself (not employer-paid), prescription drugs, dental and vision care, long-term care services, and medically necessary travel.
Above-the-Line Deductions: Available Without Itemizing
Some deductions — called “above-the-line” deductions or adjustments to income — reduce your AGI regardless of whether you itemize. These are particularly valuable because they lower your AGI, which affects eligibility for other credits and deductions.
- Traditional IRA contributions — up to $7,000 ($8,000 if 50 or older) for 2024, if you meet income and workplace plan requirements.
- HSA contributions — up to $4,150 (individual) or $8,300 (family) for 2024 if you have a qualifying high-deductible health plan.
- Student loan interest — up to $2,500 per year, subject to income limits.
- Self-employed health insurance premiums — 100% of premiums if you’re self-employed and not eligible for employer coverage.
- Self-employment tax deduction — 50% of the self-employment tax you pay.
- Alimony paid under pre-2019 divorce agreements — deductible for agreements executed before 2019.
- Educator expenses — up to $300 for out-of-pocket classroom expenses for K-12 teachers.
Tax Credits vs. Deductions
It’s worth understanding the difference: a deduction reduces your taxable income, while a credit reduces your tax owed dollar for dollar. A $1,000 deduction saves you $220 if you’re in the 22% bracket. A $1,000 credit saves you $1,000 regardless of your bracket. Credits are more powerful — don’t overlook them in favor of deductions.
Key credits to check for eligibility: Child Tax Credit, Earned Income Tax Credit (EITC), Child and Dependent Care Credit, American Opportunity Credit (education), Lifetime Learning Credit, Saver’s Credit (retirement contributions), and Premium Tax Credit (health insurance through the Marketplace).
Common Deductions People Miss
- The additional standard deduction for age 65+. Many older adults don’t realize they get a higher standard deduction automatically.
- HSA contributions made outside payroll. If you contributed to an HSA directly rather than through employer payroll, the deduction doesn’t happen automatically — you must claim it on Form 8889.
- Self-employed health insurance premiums. Freelancers and business owners often overlook this above-the-line deduction.
- Investment losses and carryforwards. If you had capital losses in a prior year that exceeded the $3,000 deduction limit, the carryforward reduces your taxes in future years automatically — but only if you remember to include it.
- Qualified Business Income (QBI) deduction. Self-employed individuals and pass-through business owners may deduct up to 20% of qualified business income, subject to income limits.
- Charitable mileage. Miles driven for qualifying charitable volunteer work are deductible at 14 cents per mile — not the same as business mileage, but still deductible.
Further Reading
- What Is a Tax Deduction?
- HSAs and Taxes
- How to File Your Taxes: A Step-by-Step Guide
- Capital Gains Tax Explained
- Self-Employment Tax Explained
- Taxes Overview
This article is for general educational purposes only and does not constitute tax or financial advice. Tax laws change and individual situations vary – consult a qualified tax professional or the IRS for guidance on your specific situation.