What qualifies as a tax write-off?

A tax write-off, also called a tax deduction, is an eligible expense that you subtract from your total income to lower the amount of income subject to tax.

How a Tax Write-Off Works

• Reduces Taxable Income: It lowers your overall taxable income rather than reducing your final tax bill dollar-for-dollar.
• Calculates Savings: Your actual tax savings equal the written-off amount multiplied by your specific tax bracket rate. If you are in a 20% tax bracket and write off $1,000, you save $200 in taxes.
• Not Free Money: Spending money just to get a write-off means you still spend more than you save; it only discounts the cost by your tax rate.

Common Examples

• For Individuals: Charitable donations, mortgage interest, and medical expenses (if itemizing).
• For Businesses: Office supplies, business travel, software subscriptions, and a portion of home office expenses.
• IRS Rule: Business write-offs must be ordinary (common in your industry) and necessary (helpful and appropriate for your work).

To claim tax write-offs, you need proof of eligible expenses and the correct tax forms to document them.

Required Documentation

• Receipts and Invoices: Detailed proof showing what you bought, the cost, the date, and the vendor.
• Financial Statements: Bank statements, credit card logs, or canceled checks tied to the expense.
• Logs and Records: Mileage logs for business or charitable driving, and square footage calculations for a home office.
• Tax Forms: Official forms like Form 1098 (mortgage interest), Form 1098-T (tuition), or charitable donation records.

Standard vs. Itemized Deductions

• Standard Deduction: A fixed dollar amount subtracted from your income, which you can claim without listing individual expenses.
• Itemized Deductions: A list of specific individual expenses (such as medical costs above 7.5% of your AGI, state and local taxes, and mortgage interest) that you add up on Schedule A if they total more than the standard deduction.

Business Write-Offs

• Ordinary and Necessary Rule: For self-employed individuals and business owners, expenses must be common in your field and helpful for your trade.
• Common Categories: Costs for advertising, business travel, office supplies, and a qualified home office.

The 10 most commonly overlooked tax deductions include everyday expenses, state taxes, and specific out-of-pocket costs that taxpayers frequently forget to claim.

Top 10 Overlooked Tax Deductions

• State Sales Taxes: You can choose to deduct state and local sales taxes instead of state and local income taxes, which is especially helpful if you live in a state without an income tax or made a large purchase like a car.
• Out-of-Pocket Charitable Contributions: Expenses incurred while doing volunteer work—such as parking fees, tolls, and charitable driving mileage (valued at 14 cents per mile)—are deductible.
• Student Loan Interest Paid by Others: If a parent or someone else pays your student loan, you can still claim the deduction on your taxes as long as you are the person legally required to repay the loan.
• Jury Pay Turned Over to Employer: If your employer kept your daily jury duty pay while you used your paid time off, you can deduct the amount you turned over to them from your taxable income.
• Refinancing Mortgage Points: When you refinance a mortgage, you cannot deduct all the points in a single year; instead, you must deduct them gradually (amortize them) over the life of the new loan.
• State Income Tax Paid in Spring: Any state income tax you paid in the spring of the filing year for a prior year's return can sometimes be added to your itemized deductions.
• Educator Expenses: Eligible K-12 teachers can deduct out-of-pocket spending on classroom supplies and books.
• Gambling Losses: If you itemize your deductions, you can deduct gambling losses up to the total amount of your reported gambling winnings.
• Moving Expenses for Military: While civilian moving expense deductions are largely paused, active-duty military members moving under orders for a permanent change of station can still deduct qualified moving costs.
• Alimony Paid: If your divorce agreement was finalized on or before December 31, 2018, the alimony payments you make to a former spouse remain tax-deductible.

You can review more details and advice on maximizing your return with tools like the TurboTax Tax Tips Guide or general filing info from H&R Block Tax Center.

A write-off (or tax deduction) is a legitimate business or personal expense that reduces your taxable income, lowering the amount of tax you owe.

What Qualifies as a Business Write-Off?

To write off a business expense, the Internal Revenue Service (IRS) requires it to be ordinary (common and accepted in your field) and necessary (helpful and appropriate for your trade or business).

Common business write-offs include:

• Rent and Utilities: Office space, warehouse rent, electricity, and water.
• Office Supplies: Paper, pens, software subscriptions, and small equipment.
• Advertising and Promotion: Marketing costs, website hosting, and social media ads.
• Travel and Vehicles: Gas, maintenance, or standard mileage for business trips (excluding your daily commute).
• Business Meals: Generally 50% deductible for client meetings or work travel.
• Salaries and Benefits: Payments made to employees and contract labor.

What Qualifies as a Personal Write-Off?

Individual taxpayers can also claim write-offs if they take the standard deduction or choose to itemize their deductions on their tax returns.

Common personal write-offs include:

• Charitable Donations: Money or property given to IRS-qualified organizations.
• Mortgage Interest: Interest paid on a loan used to buy, build, or improve your home.
• Medical Expenses: Out-of-pocket medical costs that exceed 7.5% of your adjusted gross income (AGI).
• Retirement Contributions: Traditional IRA or 401(k) contributions.

The new $6,000 senior tax deduction gives individuals aged 65 and older an extra write-off to lower their taxable federal income.

The Internal Revenue Service (IRS) details how this provision works for tax years 2025 through 2028:

Key Rules and Amounts

• Deduction Amount: You can deduct up to $6,000 if you are 65 or older. Married couples where both spouses qualify can deduct up to $12,000.
• Stacking Benefits: This $6,000 amount layers directly on top of your regular standard deduction and the existing extra standard deduction for seniors.
• Standard or Itemized: You can claim this deduction whether you take the standard deduction or choose to itemize your taxes.
• Temporary Timeline: The benefit is active only for the 2025 through 2028 tax years unless Congress extends it.

Income Limits and Phase-Outs

The deduction reduces gradually if your modified adjusted gross income (MAGI) goes past specific limits:

• Single Filers: The phase-out starts at a MAGI of $75,000. The deduction reduces by 6 cents for every dollar earned over $75,000 and disappears completely at $175,000.
• Married Filing Jointly: The phase-out starts at a MAGI of $150,000 and drops to zero at $250,000.
• Married Filing Separately: You cannot claim this deduction if you use this filing status.

How to Claim It

• You do not need a separate application form.
• You claim the deduction on your federal tax return (Form 1040 or 1040-SR) by confirming your age eligibility or letting your tax software calculate it.