Withdrawal Order Strategy: Which Accounts to Tap First in Retirement
Taxable-first rules are a starting point, not a law. Here is when to spend IRA early, when Roth should wait, and how ACA years rewrite the playbook.
Pop wisdom says taxable → Traditional → Roth. That order minimizes early taxes — and sometimes maximizes late-life taxes when giant RMDs collide with Social Security and Medicare surcharges.
Withdrawal order is not a personality quiz. It is a tax-control policy that should be updated as your income stack changes.
Why conventional order can fail
If you starve the IRS early by spending only taxable, you may leave a balloon Traditional balance that later forces large ordinary-income RMDs. You “won” early brackets and then lost the war on IRMAA and Social Security taxation.
A better framing: fill low brackets on purpose
Use Traditional withdrawals (and measured Roth conversions) in the 60s valley to realize income at 12–22% that would otherwise arrive involuntarily at higher stacked rates later. Keep Roth growing longest unless you need its tax-free character for spending, ACA years, or estate goals.
ACA pre-65 constraint
Withdrawal order must manage MAGI for premium tax credits. Large IRA draws can be expensive after lost subsidies — sometimes worse than the federal bracket suggests.
Case study: Karen, 62 (illustrative)
Balances: $600k taxable, $900k Traditional IRA, $300k Roth; needs $90k/year spend.
| Sequence | Lifetime tax / IRMAA theme |
|---|---|
| Taxable-first | Low MAGI early; Traditional untouched; RMDs later may spike. |
| Blend: taxable + bracket-filling Traditional | More tax now; smaller future RMD; often lower lifetime tax. |
| Roth-first | Usually tax-expensive unless ACA/IRMAA/estate reasons dominate. |
The winning sequence is the one your CPA models with stacked marginal rates, not the one that feels best in year one.
Common mistakes
- Spending Roth first “because it is tax-free” while leaving a giant IRA for RMD years.
- Ignoring state tax in withdrawal sequencing.
- Forgetting that realized capital gains also count toward MAGI for ACA planning.
Quick Check
Which withdrawal most directly increases ACA-related MAGI for a retiree under 65 on marketplace coverage?
References
- IRS — Publication 590-B (IRA distributions): https://www.irs.gov/publications/p590b
- IRS — Retirement plan and IRA RMDs: https://www.irs.gov/retirement-plans/retirement-plan-and-ira-required-minimum-distributions
- HealthCare.gov — income and savings: https://www.healthcare.gov/income-and-household-information/
- IRS — Topic 411 (Social Security and equivalent benefits): https://www.irs.gov/taxtopics/tc411