Most retirees hold money in several account types, each taxed differently, and the order in which you tap them affects how long your savings last. A thoughtful withdrawal sequence can lower your lifetime tax bill and let tax-advantaged accounts keep compounding. This is one of the highest-value planning decisions in the decumulation phase.
The three tax buckets
Retirement money generally falls into three buckets: taxable brokerage accounts, tax-deferred accounts like traditional IRAs and 401(k)s, and tax-free Roth accounts. Taxable accounts are taxed on dividends and capital gains as they occur, tax-deferred withdrawals are taxed as ordinary income, and qualified Roth withdrawals are not taxed at all. Because each is treated differently, the sequence you draw from changes your annual taxable income. Managing that income is the heart of a smart withdrawal strategy.
The conventional sequence
A common default is to spend taxable accounts first, then tax-deferred accounts, and leave Roth money for last. This lets the tax-advantaged accounts compound longer and often keeps early-retirement income low. Spending taxable accounts first also benefits from lower long-term capital gains rates rather than ordinary income rates. Preserving Roth funds for the end leaves the most flexible, tax-free money available late in life or for heirs.
Why the simple order is not always optimal
Draining taxable accounts first can leave a large traditional balance that triggers big required distributions and a tax spike in your 70s. A more refined approach blends the buckets each year to fill up the lower tax brackets deliberately. This might mean taking some tax-deferred withdrawals or Roth conversions early, even while spending taxable money, to smooth taxes over decades. The goal is a level tax rate across retirement rather than low taxes now and high taxes later.
Using the low-income gap years
The years between retiring and starting Social Security or RMDs often feature unusually low income, creating a valuable planning window. Converting traditional dollars to Roth or realizing capital gains during these gap years can lock in low rates. Filling the standard deduction and lower brackets with intentional income reduces the tax burden of future forced withdrawals. Coordinating this with the timing of Social Security multiplies the benefit.
A 63-year-old retiree delays Social Security to 70 and lives partly on a taxable account. In the low-income gap years, they convert 30,000 dollars a year from a traditional IRA to Roth, filling the lower brackets and shrinking the future RMDs that would otherwise be taxed at a higher rate.
Key takeaways
- Retirement money sits in taxable, tax-deferred, and tax-free Roth buckets, each taxed differently.
- A common default spends taxable first, tax-deferred next, and Roth last.
- Blending buckets to fill low brackets can beat the simple order and reduce lifetime tax.
- Low-income gap years are prime time for Roth conversions and gain harvesting.
Common mistakes
- Blindly draining taxable accounts first and leaving a huge taxable RMD problem for your 70s.
- Ignoring Roth conversion opportunities during low-income gap years.
- Withdrawing from Roth accounts too early and giving up their tax-free compounding.
FAQ
Should everyone follow the taxable-first order?
It is a reasonable default, but people with large traditional balances often benefit from blending buckets or doing Roth conversions to avoid a future tax spike.
What are gap years?
They are the low-income years after you stop working but before Social Security and RMDs begin, an ideal window for tax-efficient conversions.