Tax-Smart Retirement Checklist

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Year-end is not just about holiday planning — for retirees, the final months of the year are prime time to make moves that can save thousands of dollars in taxes. The rules around retirement income, required distributions, Medicare premiums, and estate gifting all carry deadlines that do not wait. Working through a structured checklist now means fewer surprises when you file in the spring.

Why Year-End Tax Planning Matters More in Retirement

During your working years, tax planning was mostly passive — your employer withheld taxes, you maxed out your 401(k), and you called it a day. Retirement changes everything. Your income now comes from multiple sources — Social Security, IRA withdrawals, investment dividends, perhaps a pension — and each one is taxed differently. Missing a single deadline or overlooking one rule can cost you real money.

The stakes are especially high because many retirement tax decisions have a ripple effect. A large Roth conversion in December, for example, can push your income into a higher Medicare premium bracket two years from now. An RMD taken too late triggers a steep IRS penalty. These are not abstract risks — they affect your monthly cash flow and your long-term financial security.

The good news is that most of these issues are entirely manageable with a little advance planning. The checklist in this article walks you through every major action item, from gifting strategies to Medicare lookback windows, so you can close out the year with confidence.

RMDs: The Deadline You Cannot Afford to Miss

Required Minimum Distributions are the IRS’s way of collecting taxes on money that has been growing tax-deferred in your traditional IRA, 401(k), or similar account. In 2026, the rules established by the SECURE 2.0 Act are fully in effect. If you turned 73 before 2025, you are already in RMD territory. If you are turning 73 in 2026, your first RMD is due by April 1, 2027 — but taking two distributions in one year can push you into a higher bracket, so many advisors recommend taking your first RMD by December 31, 2026 instead.

The penalty for missing an RMD was reduced by SECURE 2.0 from 50 percent to 25 percent of the amount not withdrawn, and drops further to 10 percent if corrected promptly. Still, that is a significant hit on money you were meant to receive. Your RMD amount is calculated by dividing your account balance as of December 31 of the prior year by a life expectancy factor from the IRS Uniform Lifetime Table.

If you have multiple traditional IRAs, you can aggregate your RMDs and take the total from any one or combination of those accounts. However, RMDs from 401(k) plans must be taken from each account separately. Do not guess — ask your IRA custodian to calculate your RMD or use the IRS worksheets at irs.gov.

Qualified Charitable Distributions: Give Smarter, Pay Less

If you are 70½ or older, one of the most powerful tax tools available to you is the Qualified Charitable Distribution, or QCD. A QCD allows you to transfer money directly from your IRA to a qualifying charity — up to $108,000 in 2026 (indexed for inflation) — without that amount ever counting as taxable income. That is a meaningful distinction from simply writing a check and taking a deduction.

Here is why it matters: most retirees take the standard deduction and do not itemize, which means a charitable cash donation does not lower their taxable income at all. A QCD bypasses that problem entirely. The distribution goes straight to the charity and never appears as income on your return. Even better, a QCD counts toward your RMD for the year, so you can satisfy your distribution requirement while also supporting a cause you care about.

To execute a QCD correctly, the funds must be transferred directly from the IRA custodian to the charity — you cannot withdraw the money first and then donate it. The receiving organization must be a 501(c)(3) public charity; donor-advised funds and private foundations do not qualify. Contact your IRA custodian well before December 31 to initiate the transfer, as processing times vary and a QCD must be completed within the calendar year to count.

IRMAA: How Today’s Income Affects Tomorrow’s Medicare Premiums

Medicare does not charge every beneficiary the same premium. If your income exceeds certain thresholds, you pay Income-Related Monthly Adjustment Amounts, known as IRMAA, on top of your standard Part B and Part D premiums. The critical detail that catches many retirees off guard is the two-year lookback: your 2026 Medicare premiums are based on your 2024 tax return, and your 2028 premiums will be determined by what you report on your 2026 return.

In 2026, the standard Medicare Part B premium is adjusted annually, but surcharges kick in once your Modified Adjusted Gross Income — which includes tax-exempt interest and certain other items — crosses the first IRMAA threshold. For a single filer, those surcharges begin at incomes above $106,000; for married couples filing jointly, the threshold is $212,000. Higher brackets carry significantly larger surcharges, sometimes adding hundreds of dollars per month to your Medicare costs.

This is exactly why large financial moves — like a big Roth conversion, a property sale, or a sizable IRA withdrawal — require careful income modeling before year-end. If a conversion will push you just over an IRMAA threshold, the extra tax plus the two-year premium increase may outweigh the benefit. If you experience a life-changing event such as retirement, divorce, or loss of a spouse that reduces your income, you can appeal your IRMAA surcharge by filing Form SSA-44 or calling the Social Security Administration at 1-800-772-1213.

Gifting, Estate Planning, and Step-Up in Basis

The 2026 annual gift tax exclusion allows you to give up to $19,000 per recipient — to as many people as you like — without filing a gift tax return or using any of your lifetime exemption. Married couples can combine their exclusions and give up to $38,000 per recipient per year. These gifts are a clean and simple way to transfer wealth to children or grandchildren while reducing the size of your taxable estate. The deadline is December 31, and transfers must be completed within the calendar year to count.

The lifetime federal estate and gift tax exemption sits at a historically high level in 2026 — approximately $13.99 million per individual — but this figure is currently scheduled to sunset at the end of 2025 under the Tax Cuts and Jobs Act. Legislation in 2026 may extend or modify this threshold, making it essential to stay informed and work with an estate planning attorney if your estate is in a range that could be affected.

Step-up in basis is another estate planning concept worth reviewing with appreciated assets. When a beneficiary inherits an asset — stocks, real estate, a business interest — the cost basis is generally stepped up to its fair market value on the date of death, eliminating capital gains on all prior appreciation. Strategic decisions about which assets to hold until death versus which to sell or give away now can produce significant tax savings across generations. Review your portfolio with a tax advisor to identify assets where this strategy applies.

Roth Conversions: The Long Game of Tax-Free Growth

A Roth conversion moves money from a traditional IRA into a Roth IRA. You pay ordinary income tax on the converted amount in the year of conversion, but future growth and qualified withdrawals from the Roth are completely tax-free. For retirees who have not yet started Social Security or are in a temporarily lower income year, the window to convert at a favorable rate can be brief and valuable.

The strategic appeal is straightforward: if you expect tax rates to rise — either because your income will increase, or because current rates expire — paying tax now at a lower rate can save money over the long run. Roth accounts are also not subject to RMDs during the owner’s lifetime, which gives you more flexibility in managing income and preserving wealth for heirs. Your beneficiaries inherit the account tax-free.

The caution, as noted in the IRMAA section, is that a conversion increases your MAGI for the year in which it occurs. That can affect Medicare premiums two years later, push more of your Social Security into taxable territory, or trigger the Net Investment Income Tax. A partial conversion — moving only enough to fill up your current tax bracket without crossing into the next — is a common middle-ground strategy. Run the numbers with a CPA or financial advisor before acting, and complete any 2026 conversions by December 31.

Your Printable Checklist

Use this checklist to work through each action item before December 31, 2026, and bring it to your next meeting with your tax advisor or financial planner.

1. Take Your 2026 RMD by December 31

If you are 73 or older and have a traditional IRA or 401(k), calculate your RMD using the IRS Uniform Lifetime Table and your prior year-end account balance. Contact your IRA custodian to initiate the withdrawal in time for it to settle before year-end. Missing this deadline triggers a penalty of up to 25 percent of the amount not withdrawn.

2. Complete a QCD Directly from Your IRA

If you are 70½ or older, instruct your IRA custodian to transfer funds directly to a qualifying 501(c)(3) charity before December 31. Up to $108,000 is excluded from your taxable income in 2026. Confirm the charity qualifies and keep the acknowledgment letter for your records. The transfer must go directly from the IRA — you cannot withdraw and then donate.

3. Make Annual Gifts of Up to $19,000 Per Recipient

You can give up to $19,000 to any number of individuals in 2026 without filing a gift tax return. Married couples can combine exclusions for $38,000 per recipient. Gifts must be completed — checks cleared, wire transfers received — by December 31 to count for this tax year. This is a straightforward way to reduce your taxable estate.

4. Review Your 2024 MAGI for 2026 IRMAA Surcharges

Check your 2024 tax return to understand your Modified Adjusted Gross Income and determine whether you are currently paying IRMAA surcharges on your Medicare premiums. If you had a qualifying income reduction since 2024 — retirement, death of a spouse, divorce — file Form SSA-44 or call 1-800-772-1213 to request an IRMAA adjustment.

5. Model the Income Impact of Any Roth Conversion

Before executing a Roth conversion, calculate how the additional income will affect your current tax bracket, your Social Security taxation, and your 2028 IRMAA exposure. Convert only what keeps you within a favorable bracket. All Roth conversions must be completed by December 31 — unlike IRA contributions, they cannot be made retroactively after year-end.

6. Project Your 2026 MAGI Before Year-End Moves

Gather estimates of all 2026 income sources: Social Security, IRA distributions, investment income, pension, and any asset sales. Calculate where your MAGI will land relative to IRMAA thresholds and Roth conversion brackets. This single exercise will guide every other decision on this checklist and prevent costly surprises when you file.

7. Identify Appreciated Assets for Step-Up in Basis Planning

Review your taxable investment accounts for assets with large unrealized gains. Assets held until death generally receive a stepped-up basis, eliminating capital gains tax on prior appreciation for your heirs. Discuss with your estate attorney or financial advisor whether it makes more sense to hold these assets, sell them strategically now, or gift them — based on your overall estate plan.

8. Confirm Your Lifetime Estate Exemption Strategy

The federal lifetime estate and gift tax exemption is approximately $13.99 million per individual in 2026, but legislative changes could affect future thresholds. If your estate is large enough to be potentially affected, review your estate plan with an attorney before year-end. Strategies like irrevocable trusts or accelerated gifting may be appropriate depending on how the law evolves.

9. Harvest Tax Losses to Offset Capital Gains

Review your taxable investment accounts for positions with unrealized losses. Selling those positions to offset capital gains realized earlier in the year is called tax-loss harvesting. Be mindful of the wash-sale rule, which disallows the loss if you repurchase the same or substantially identical security within 30 days before or after the sale. This must be completed by December 31.

10. Review Beneficiary Designations on All Retirement Accounts

IRA and 401(k) beneficiary designations override your will, making them critically important. Review all accounts — including life insurance policies — to ensure designations reflect your current wishes. Major life changes such as marriage, divorce, or the death of a named beneficiary are common reasons designations become outdated. Contact your plan administrator or IRA custodian to update forms as needed.

11. Check Whether You Owe Estimated Taxes for Q4

If you have significant untaxed income — from IRA withdrawals, Roth conversions, investment gains, or self-employment — you may need to make a Q4 estimated tax payment by January 15, 2027. Alternatively, you can ask your IRA custodian to increase federal tax withholding on a year-end distribution, since withholding is treated as paid evenly throughout the year and can cover underpayments.

12. Maximize Deductible Contributions If Still Eligible

If you have earned income in 2026, you may still contribute to a traditional or Roth IRA. The contribution limit is $7,000, with a $1,000 catch-up contribution allowed if you are 50 or older, for a total of $8,000. IRA contributions can be made up to the tax filing deadline in April 2027, but starting earlier gives your money more time to grow.

13. Organize Charitable Giving for Maximum Tax Benefit

If you itemize deductions, ensure all charitable contributions are made — and for non-cash donations, properly documented — by December 31. For donors who do not itemize, a QCD remains the most effective strategy. Consider bunching two years of planned charitable giving into a single year to exceed the standard deduction threshold and make itemizing worthwhile.

What to Do Next

Once you have worked through this checklist, schedule a year-end appointment with your CPA or financial advisor to review your projections together and execute any remaining moves before the December 31 deadline. Bring your most recent tax return, a summary of your 2026 income sources, and your current account statements. The time you invest before year-end consistently pays off when you file your return in the spring.

Frequently Asked Questions

What happens if I miss my RMD deadline?

If you fail to take your full Required Minimum Distribution by December 31, the IRS assesses a penalty of 25 percent of the amount not withdrawn. That penalty drops to 10 percent if you correct the shortfall in a timely manner. Contact your IRA custodian immediately if you realize you have missed or shortchanged your RMD, and consult a tax professional about filing IRS Form 5329 to request a penalty waiver.

Can I do a QCD if I already took my RMD this year?

Yes, but timing matters. A QCD counts toward your RMD only if it is processed before you take your regular RMD withdrawal. If you have already taken your full RMD for the year, a QCD is still allowed and still excludes the donated amount from your taxable income — it simply will not reduce your RMD obligation since that has already been satisfied. Plan QCDs early in the calendar year for best results.

How do I appeal an IRMAA surcharge if my income dropped?

If you experienced a qualifying life-changing event — such as retirement, reduction in work hours, divorce, death of a spouse, or loss of income-producing property — you can request a reduction in your IRMAA surcharge. File Form SSA-44 with supporting documentation, or contact the Social Security Administration directly at 1-800-772-1213. Medicare uses a two-year lookback, so you must proactively appeal rather than wait for automatic adjustments.

A few focused hours spent reviewing these items before December 31 can produce tax savings that last for years — and give you the peace of mind that comes from knowing your finances are working as hard as you are.