Year-End Tax Deduction Checklist for Individuals

Waiting until April to think about tax deductions is expensive. Once the calendar flips to January 1, many opportunities disappear. That’s why a year-end tax deduction checklist is essential. By acting now, you can lower your taxable income and keep more of your hard-earned money.

But where do you start? Tax rules change, and not every deduction applies to everyone. This guide walks you through what to check before December 31 — without the fluff.

Why Year-End Tax Planning Matters

Taxes are pay-as-you-go, but many deductions are use-it-or-lose-it. If you miss the window, you can’t go back. Planning ahead lets you shift income or expenses to take full advantage of tax breaks.

For example, if you expect to be in a lower tax bracket next year, you might accelerate deductions into this year. If you’re self-employed, buying equipment before year-end could mean a bigger write-off now. The key is knowing what’s available and acting before midnight on December 31.

Retirement Contributions: Lower Income, Build Savings

One of the simplest ways to reduce your taxable income is to contribute to a retirement account. You have until the tax filing deadline (usually April 15) for IRAs, but for 401(k)s, you must contribute by December 31.

401(k) and Similar Employer Plans

Check your paycheck. Can you increase your contribution percentage for the last pay period? The 2024 limit is $23,000 (or $30,500 if you’re 50 or older). Every dollar you contribute lowers your adjusted gross income.

Traditional IRA

You have until Tax Day to make IRA contributions for the prior year. But if you want to reduce this year’s income, contributing now (if eligible) is smart. The 2024 limit is $7,000 ($8,000 if 50+).

Make sure you understand the income limits for deductibility. If you or your spouse is covered by a workplace retirement plan, the deduction phases out at certain income levels. Check the IRS guidelines before contributing.

Solo 401(k) and SEP IRA for Self-Employed

If you’re self-employed, consider a Solo 401(k) or SEP IRA. These allow large contributions based on your earnings. You need to set up the plan by December 31, but you can fund it later for SEP IRAs. For a Solo 401(k), you must make the employee contribution by year-end, though employer contributions can be deferred until the tax deadline.

Charitable Donations: Give and Get a Deduction

Donating to qualified charities reduces your taxable income — but only if you itemize deductions (Schedule A). For 2024, the standard deduction is $14,600 for single filers and $29,200 for married filing jointly. If your total itemized deductions exceed those amounts, charitable gifts are tax-smart.

To claim the deduction, you need a receipt or bank record for any donation over $250. Donations must be made by December 31. Credit card charges count even if the bill comes in January — as long as the charge is in the current year.

Also, consider donating appreciated stock or property instead of cash. You avoid capital gains tax on the appreciation and get a deduction for the fair market value. This is especially valuable if you hold highly appreciated assets. Check with your broker to facilitate the transfer before year-end.

Be careful with non-cash donations. If you donate clothing or household items, they must be in good used condition. The IRS may disclaim deductions for items of minimal value, so keep a detailed list and photos.

Medical and Dental Expenses: Bunching Strategy

Medical expenses are deductible only if they exceed 7.5% of your adjusted gross income. That’s a high threshold. But you can “bunch” expenses into one year by scheduling elective procedures, buying glasses, or stocking up on prescription drugs before the end of the year.

Eligible expenses include doctor visits, hospital stays, dental work, vision care, and even some long-term care premiums. If you’re close to the 7.5% threshold, paying bills before December 31 could push you over.

Also, consider paying for any medical procedures that you’ve been postponing. Dental implants, braces, or elective surgeries can be planned before year-end. Just make sure you have the documentation to prove the payment.

Tax-Loss Harvesting: Turn Losses into Savings

If you have investments that have lost value, selling them before year-end allows you to offset capital gains from other sales. If your losses exceed gains, you can deduct up to $3,000 ($1,500 if married filing separately) against ordinary income. Unused losses carry forward to future years.

Be aware of the wash-sale rule: if you buy back the same or substantially identical security within 30 days, the loss is disallowed. So if you still want to hold the investment, wait 31 days after selling. Track your trades carefully to avoid accidentally triggering the rule.

State and Local Taxes (SALT): Watch the Cap

The state and local tax deduction is capped at $10,000 for single and joint filers ($5,000 if married filing separately). That includes income, property, and sales taxes. If you’ve already hit the cap, paying extra before year-end won’t help. But if you’re under, consider prepaying property taxes or state estimated taxes.

Note: The IRS has occasionally limited deductions for prepaid state taxes. Check current rules or consult a tax pro before making large prepayments.

Flexible Spending Accounts (FSA): Use It or Lose It

Health care and dependent care FSAs typically have a use-it-or-lose-it rule. Some plans offer a grace period or a small carryover, but many require you to spend the money by year-end. Check your FSA balance and schedule appointments, buy eligible items, or fill prescriptions before the deadline.

Keep receipts for all FSA purchases. Your plan administrator may require documentation, especially for larger claims.

Home Office Deduction and Business Expenses

If you’re self-employed or have a side business, you can deduct home office expenses if you use the space regularly and exclusively for business. The simplified method allows $5 per square foot up to 300 square feet. The regular method requires tracking actual costs.

Also, consider making necessary business purchases before December 31. You can use the Section 179 deduction to expense up to $1,160,000 of equipment (2024 limit) in the first year. This can be a powerful way to lower your tax bill if you need new gear.

Keeping accurate books all year makes tax time easier. If you’re struggling with bookkeeping, our guide on Bookkeeping vs Accounting can help you understand what records to keep.

Review Your Withholding and Estimated Payments

If you had a big tax bill last year, you might need to adjust withholding or make an estimated payment by January 15 (for the fourth quarter). Avoid underpayment penalties by ensuring you’ve paid at least 90% of your current year tax or 100% of the prior year’s tax (110% if your AGI was over $150,000).

Use the IRS Tax Withholding Estimator to check your status. If you’re due for a refund, you could adjust withholding downward so you have more cash throughout the year.

Education Credits and Deductions

If you or a dependent paid for higher education in 2024, look into the American Opportunity Tax Credit (up to $2,500) or the Lifetime Learning Credit (up to $2,000). Tuition and fees paid by December 31 count for this year. Student loan interest is also deductible (up to $2,500) even if you don’t itemize.

Remember that the American Opportunity Credit is partially refundable, meaning you might get money back even if you owe no tax. It’s available for the first four years of post-secondary education. The Lifetime Learning Credit has no limit on the number of years.

Miscellaneous Deductions and Credits

Don’t forget about energy-efficient home improvements (some credits expired but check for new ones), adoption credits, child and dependent care credit, and the earned income tax credit. Each has specific rules, but they can add up.

If you run a business, understanding your financial statements is vital. Check out our article on How to Create a Profit and Loss Statement for Your Business to keep your numbers straight.

Finally, if you’re using accounting software, year-end is the perfect time to reconcile accounts. Our guide on managing accounts receivable can help you collect what’s owed before the year ends.

Two Simple Steps to Get Organized

1. Gather your documents. Collect W-2s, 1099s, receipts for deductions, and bank statements. Having everything in one place saves time and prevents mistakes.
2. Run the numbers. Estimate your taxable income and deductions. Use last year’s return as a starting point. If you’re close to the standard deduction threshold, consider bunching deductions this year.

If you’re unsure about any step, consult a tax professional. A small fee can save you hundreds — or thousands — in missed deductions.

Common Mistakes to Avoid at Year-End

One frequent error is forgetting to account for the alternative minimum tax (AMT). Some deductions, like state taxes and miscellaneous itemized deductions, may be disallowed for AMT purposes. If you might be subject to AMT, accelerating those deductions won’t help.

Another mistake is overpaying your mortgage interest or property taxes just to get a deduction, especially if you can’t itemize. Always compare the deduction benefit to the cost of prepaying.

Finally, don’t forget to check your beneficiary designations. Year-end is a good time to review your retirement accounts and life insurance policies to ensure they align with your estate plan.

Frequently asked questions

What is the deadline for making tax-deductible charitable contributions?

Charitable contributions must be made by December 31 to be deductible on your current year tax return. Donations made by credit card count as long as the charge occurs before year-end, even if you pay the bill in January.

Can I deduct medical expenses I paid in December?

Yes, you can deduct medical expenses paid during the tax year. To claim the deduction, your total medical expenses must exceed 7.5% of your adjusted gross income. Paying bills in December can help you reach that threshold.

How much can I contribute to my IRA before the end of the year?

For 2024, you can contribute up to $7,000 to a traditional or Roth IRA ($8,000 if age 50 or older). You have until the tax filing deadline (April 15, 2025) to make contributions for the 2024 tax year, but contributing early gives you more time to grow your money.

What is tax-loss harvesting and how does it save me money?

Tax-loss harvesting involves selling investments that have lost value to offset capital gains from other investments. If your losses exceed your gains, you can deduct up to $3,000 against ordinary income. Unused losses can be carried forward to future years.

Do I need to itemize deductions to benefit from charitable contributions?

Yes, you must itemize deductions on Schedule A to claim a deduction for charitable contributions. If your total itemized deductions are less than the standard deduction ($14,600 single, $29,200 married filing jointly for 2024), you won’t benefit from donating solely for the tax deduction.