Five Retirement Tax Strategies to Review Before December 31

For retirees, some of the most critical tax decisions for 2026 must be addressed long before it is time to prepare your tax return. There is an essential difference between tax preparation and tax planning: tax preparation reports decisions that have already occurred, while tax planning asks what actions should still happen before the December 31 deadline.

With several months remaining in 2026, retirees and those approaching retirement have a prime opportunity to look closely at how their retirement income sources interact. Key elements like IRA withdrawals, Roth conversions, required minimum distributions (RMDs), Social Security, and the enhanced federal deduction for seniors do not exist in isolation. Reviewing how they affect one another can help you build a far more efficient year-end strategy.

Deciding if a Roth Conversion Fits Your 2026 Strategy

A Roth conversion moves funds from a traditional IRA or another tax-deferred retirement account into a Roth IRA. The tax tradeoff is straightforward: any previously untaxed amounts generally become taxable income in the year of the conversion. In exchange, the funds enter the Roth system, where qualified distributions are tax-free and account owners are not subject to lifetime required minimum distributions.

Because the IRS treats converted traditional IRA funds as taxable income for the conversion year, both the size and timing of the conversion are critical. Simply converting $100,000 under the assumption that “Roth is always better” can backfire if that additional income pushes you into an undesirable tax position. Instead, a conversion must be carefully modeled alongside your other expected 2026 income.

Before moving forward, you should ask yourself several key questions:

  • How much taxable income do you expect to report this year?
  • Will your income rise significantly when your mandatory RMDs begin?
  • Will the conversion affect your eligibility for other income-based tax benefits?
  • Do you need the converted funds for near-term spending?
  • What tax rate are you paying now compared with the rate you expect to pay later?

Often, a partial conversion makes more sense than an all-or-nothing decision, helping you stay within a favorable tax bracket.

Proactive Planning Long Before Your RMDs Begin

Under current law, required minimum distributions generally begin at age 73 for affected retirement accounts. The IRS calculates your RMD by taking your account balance as of December 31 of the prior year and dividing it by an applicable life-expectancy factor. However, the best time to think about RMDs is often several years before they actually start.

Retirement Tax Planning

Once mandatory distributions begin, you have significantly less control over the amount of taxable retirement income that appears on your tax return. For individuals who are already retired but have not yet reached RMD age, there is often a unique planning window where taxable income is temporarily lower. This temporary drop in income can be strategically utilized for several actions, including:

  • Executing partial Roth conversions
  • Taking planned, voluntary IRA withdrawals
  • Recognizing capital gains in a lower bracket
  • Implementing charitable giving strategies
  • Managing other aspects of your tax brackets

The objective here is not necessarily to minimize your tax bill for the current year. Sometimes, intentionally paying taxes at a known, lower rate today is a smart way to reduce your exposure to a much higher, less favorable tax rate in the future.

Evaluating the Enhanced Senior Deduction for 2026

Taxpayers who are 65 or older may qualify for a separate enhanced federal deduction. For the 2026 tax year, this deduction can be as much as $6,000 per eligible individual, or up to $12,000 on a qualifying joint return when both spouses meet the eligibility requirements. This deduction is available to qualifying taxpayers whether they choose to itemize their deductions or claim the standard deduction.

However, there is an important planning interaction to consider: the deduction phases out as modified adjusted gross income (MAGI) rises above $75,000 for single taxpayers and $150,000 for joint filers. A large Roth conversion or another discretionary income-producing transaction could produce a tax benefit in one area while reducing your enhanced senior deduction in another. Rather than avoiding these transactions entirely, you should project your entire tax return before making a final decision.

Coordinating Social Security and Other Retirement Income Sources

Retirement income rarely comes from a single source. A typical household might receive a combination of Social Security benefits, pensions, traditional IRA distributions, 401(k) distributions, investment income, capital gains, and rental income. These different streams interact with one another on your return.

For example, increasing an IRA distribution can increase your overall taxable income, change how much of your Social Security benefits are subject to tax, reduce the value of deductions tied to your income level, and potentially affect other income-sensitive costs. Retirement tax planning is far more effective when treated as a comprehensive income strategy rather than a series of isolated choices. Before deciding how much to withdraw from an IRA, it is essential to look at what else will appear on your return.

Financial Planning and Projections

Running Your Tax Projection Well Before December 31

While some tax strategies can be sorted out during tax filing season, many of the most impactful retirement decisions must be completed by year-end. A Roth conversion intended for the 2026 tax year must be executed within the 2026 calendar year. Furthermore, you can no longer undo a Roth conversion through recharacterization if you later decide the transaction was too large.

Waiting until late December also introduces unnecessary administrative risks. Custodians are often swamped with year-end requests, and processing delays or incomplete paperwork can prevent your transactions from being completed in time. A much safer and more effective approach is to run a comprehensive tax projection while you still have time to take action. A projection allows us to estimate:

  • Your total expected 2026 income
  • Capital gains and losses
  • Required and discretionary retirement distributions
  • Potential Roth conversion amounts
  • Available deductions and exemptions
  • Your projected federal tax brackets
  • Estimated tax payments and withholding requirements

Optimizing Your Retirement Income with Christiansen Accounting

True retirement planning is not merely about accumulating assets; it is about how efficiently you can convert those assets into after-tax income during retirement. If you are retired or approaching retirement in California, we invite you to review your 2026 income and retirement picture with our team. At Christiansen Accounting, we can help you model these scenarios and make informed year-end decisions. Contact us today to schedule your planning session before the December 31 deadline.

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