Which Account Should Fund Retirement Spending First, and How Often?
The retirement spending decision may already be made. Automatic income may cover part of it. The remaining question is where the rest of the money should come from.
That question often appears after the household has built a process for getting retirement income to the checking account. Several accounts may be available. Taxable savings may be one source. Traditional and Roth accounts may be others. They do not create the same tax result or leave the same resources available later.
The useful answer is rarely a permanent order. It is a current funding choice with a reason, an operating cadence, and a point for another look.
What changes when you use one account instead of another?
Money from a taxable brokerage account has already entered the account after tax. Selling an investment may still create a capital gain or loss. The result depends partly on the investment’s basis and how long it was held. [1]
A distribution from a traditional IRA is generally taxable except to the extent it represents basis or another exception applies. Required minimum distributions can eventually place a floor under how much must be left in certain accounts. Roth IRA owners do not have lifetime required minimum distributions, and qualified Roth withdrawals are tax-free. [2]
Age can matter too. Before age 59½, the taxable portion of some retirement-account withdrawals may face an additional tax unless an exception applies. The rules can differ by account and circumstance. [2]
These differences do not identify one account that should always go first. They show why the source decision belongs inside the retirement plan.
Why is there no universal retirement withdrawal order?
A familiar rule says to spend taxable money first, tax-deferred money next, and Roth money last. Research comparing withdrawal strategies shows that a more useful sequence can depend on the household’s tax rates and account mix. Required distributions and the length of the planning period can also change the result. [3][4][5]
For one year, using taxable assets may fit the plan. In another, a measured traditional-account withdrawal may use an available tax range or reduce a future required distribution. Roth money may help when keeping taxable income low has a specific purpose.
The word first should therefore mean “the source that fits this review period.” It should not mean “the account we will keep draining until it is empty.”
Dovetail Principle: Using What You Built Is Part of the Plan
Retirement changes the job of an account. It is no longer only a place to accumulate money. It may now fund spending or hold resources for later. It can also provide flexibility when another source creates an unwanted consequence.
Using the money is not separate from managing it. The choice of source affects what remains and what the household can adjust later.
How can one review set both the source and the cadence?
Start with the spending gap that has already been identified. Then make five connected operating decisions:
- Account for any distributions that must occur during the year.
- Estimate how each possible source would change taxable income.
- Look for investments that already need to be reduced during rebalancing.
- Decide how much of the next spending period should be held in the operating reserve.
- Set how taxes will be withheld or paid from the selected withdrawal.
This sequence can enable a single transaction to do more than just raise cash. Selling an overweight investment may also move the portfolio closer to its intended mix. Taking a required distribution may fund spending that would otherwise come from another account.
The tax estimate should include income already expected for the year. It should also consider whether a larger income year may affect a later Medicare premium. Social Security generally uses tax-return information to determine the income-related adjustment for Medicare Part B and prescription drug coverage. [6]
How often should investments be sold and money transferred?
The sale schedule and the checking-account schedule do not have to match. A household might transfer money to checking monthly while replenishing its operating reserve less often. Another household may sell more frequently because its reserve is smaller or its portfolio needs attention.
Most applicable stock, bond, and exchange-traded fund transactions now settle one business day after the trade date. Some investments and account procedures follow different timelines. Leave enough time for settlement, withholding, and the transfer itself. [7]
The reserve is the bridge between an investment sale and household spending. Its amount is a separate planning decision. The article The Better Safety Question in Retirement: What Should Each Dollar Do? explains why money needed soon may have a different job from money meant for later.
When should the funding source be reviewed again?
Revisit the source when the tax picture changes. A required distribution or large expense can also justify another look. A portfolio rebalance may create another review point. The review does not need to rebuild the spending plan each time.
A usable record can be brief. Note which account is funding the current period and why it was selected. Record how much will remain in reserve. Then state what would change the choice. That keeps the sequence deliberate without treating it as permanent.
For broader context on how withdrawals, taxes, and available resources fit together, see Retirement Income Planning.
Related Reading: NIIT, IRMAA, RMDs: Why Tax Decisions Need a Multi-year Plan. It shows why a withdrawal that works this year may still affect taxes or Medicare costs later.
About the author
Ross Marino, CFP®, CeFT®, is the Founder & CEO of Dovetail Financial and creator of Human-First Financial Guidance®. He helps people nearing or living in retirement connect their lives and wealth so that financial decisions become clearer, more personal, and easier to navigate.
Notes
- Publication 550 (2025), Investment Income and Expenses, Internal Revenue Service, 2025 edition, published March 5, 2026.
- Publication 590-B (2025), Distributions from Individual Retirement Arrangements (IRAs), Internal Revenue Service, 2025 edition, revised January 21, 2026.
- Tax-Efficient Retirement Withdrawal Planning Using a Comprehensive Tax Model, Alan R. Sumutka, Andrew M. Sumutka, and Lewis W. Coopersmith, Journal of Financial Planning, April 2012.
- Tax-Efficient Withdrawal Strategies, Kirsten A. Cook, William Meyer, and William Reichenstein, Financial Analysts Journal, March 2015.
- Toward Constructing Tax Efficient Withdrawal Strategies for Retirees with Traditional 401(k)/IRAs, Roth 401(k)/IRAs, and Taxable Accounts, James DiLellio and Daniel Ostrov, Financial Services Review, 2020.
- Medicare Income-Related Monthly Adjustment Amount — Life-Changing Event, Form SSA-44, Social Security Administration, December 2025.
- New “T+1” Settlement Cycle — What Investors Need to Know, U.S. Securities and Exchange Commission, March 27, 2024.
Disclosure
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