Account Withdrawal Order Strategy: Bracket-Based vs. Traditional Sequencing

The order in which you draw from taxable, tax-deferred, and Roth accounts significantly impacts your lifetime taxes. A bracket-based strategy tailored to your income changes year-by-year often saves more than the standard textbook approach.

The conventional wisdom is a reasonable default but often not optimal. The standard advice -- taxable accounts first, then tax-deferred, then Roth last -- assumes your tax rate stays roughly constant throughout retirement. In practice, it rarely does. Your early retirement years may have lower income, while later years stack RMDs, Social Security, and other sources into higher brackets.

The smarter approach is bracket-based. Withdraw from tax-deferred accounts up to the top of a target bracket in low-income years. Fill remaining spending needs from taxable accounts, where long-term gains may qualify for the 0% or 15% capital gains rate. Preserve Roth funds for years when other income pushes you into higher brackets or for legacy planning.

What a CPA models: The optimal withdrawal sequence year by year, accounting for your specific mix of account types, projected Social Security, RMD timing, and bracket thresholds. The sequence interacts with Roth conversion strategy and IRMAA planning -- they cannot be optimized independently.

The tradeoff: The optimal sequence changes as your income, tax law, and account balances change. This needs annual recalculation, not a one-time plan.