Year-End Tax Checklist
The plain answer
Section titled “The plain answer”Before 2026 ends, check whether your tax payments and a few flexible financial decisions still match your situation. Start with withholding, then review retirement contributions, charitable giving, and taxable investment losses. A year-end move should improve your finances, not create spending for the sake of a deduction.
How it actually works
Section titled “How it actually works”Check your withholding
Section titled “Check your withholding”Compare the federal income tax withheld from your pay with the tax you expect to owe. A large raise, a second job, self-employment income, investment income, or a change in family circumstances can make an old withholding election inaccurate.
If you appear short, consider updating Form W-4 or making an estimated tax payment. If you consistently overpay, adjusting withholding may improve your cash flow. A refund is money returned after you paid more than required, not a bonus from the government.
Review retirement contributions
Section titled “Review retirement contributions”Check how much you have contributed to workplace and individual retirement accounts and whether additional saving fits your budget. Account limits, eligibility, deduction rules, and contribution deadlines differ. Contribution deadlines follow IRS rules for the year, so verify the rule for your account before acting.
Consider bunching charitable gifts
Section titled “Consider bunching charitable gifts”Charitable gifts generally reduce federal taxable income only when you itemize deductions. If your itemized deductions are near the standard deduction, concentrating multiple years of planned gifts into one year may make itemizing more useful. This is called bunching.
Do not accelerate gifts you cannot afford. The tax benefit covers only part of the amount donated.
Review taxable investments for losses
Section titled “Review taxable investments for losses”Selling an investment below its tax basis may create a capital loss that offsets capital gains and, within IRS limits, some other income. Tax-loss harvesting can help when it fits your investment plan. It is not a reason to abandon a sound portfolio or make a rushed trade.
The wash-sale rule can disallow a loss when you buy the same or a substantially identical investment around the sale. Review purchases in every relevant account, including automatic investments, before harvesting a loss.
What this means for you
Section titled “What this means for you”Use this order:
- Estimate your full-year income and federal tax payments.
- Correct withholding or estimated payments if the gap is meaningful.
- Review retirement contributions against your cash needs and eligibility.
- Add up potential itemized deductions before changing the timing of charitable gifts.
- Review taxable investment gains, losses, replacement investments, and wash-sale risk together.
- Save confirmations, receipts, and tax records for every action you take.
Tax planning means choosing the timing and structure of legitimate financial decisions. It does not mean creating transactions with no real purpose or hiding income.
Common mistakes
Section titled “Common mistakes”- Waiting until the end of the year to estimate a withholding shortfall
- Assuming every retirement account has the same contribution deadline
- Donating more only to receive a partial tax benefit
- Bunching gifts without checking whether total itemized deductions will exceed the standard deduction
- Harvesting a loss while an automatic purchase triggers the wash-sale rule
- Letting taxes override investment risk, diversification, or cash needs
- Confusing a deduction with a dollar-for-dollar credit
Related pages
Section titled “Related pages”Educational content, not personalized financial, tax, or legal advice. No affiliate relationships. Figures are for tax year 2026 and change annually.Read the full disclaimer.