The Optimal Retirement Withdrawal Order

Optimal retirement account withdrawal sequencing

PriorityAccount TypeWhy This Order
1stRequired Minimum Distributions (Traditional IRA/401k)Mandatory — must be taken first
2ndSocial Security incomeNon-discretionary once you claim
3rdTaxable brokerage account (up to 0% capital gains bracket)Pay 0% on long-term gains if income is low enough
4thTraditional IRA/401k (bracket filling)Fill brackets up to target level
5thRoth IRA (last resort or strategic use)Preserve tax-free growth; use to avoid bracket spikes
💡The Roth IRA as a Tax Buffer

The Roth IRA’s greatest retirement value is as a precision instrument: take just enough from traditional accounts to fill your target bracket, then use Roth for any additional cash needs. This keeps your taxable income managed while still meeting spending needs.

Using Roth IRA to Manage IRMAA and SS Taxation

  • Roth distributions do NOT count toward MAGI — no IRMAA impact regardless of amount
  • Roth distributions do NOT count toward combined income for Social Security taxation
  • Strategy: take just enough from traditional accounts to stay below IRMAA thresholds and SS taxation cliffs
  • Use Roth IRA for additional cash needs beyond those thresholds — takes income without tax consequences
  • Example: your RMD pushes you to $100,000 MAGI (just below $103,000 IRMAA threshold). You need $10,000 more for a trip. Take from Roth IRA — no IRMAA triggered, no additional SS taxation.

When to Tap the Roth IRA First

The conventional wisdom says 'Roth last' — but there are situations where drawing on Roth early in retirement is strategically optimal: (1) Early retirement years when income is lowest — these are the best years to preserve tax-free Roth growth, not use it. (2) Very late in retirement — if your portfolio is heavily concentrated in traditional accounts, tapping Roth eventually avoids the compounding RMD problem. (3) Large irregular expenses — an unexpected $30,000 expense is best paid from Roth rather than creating a bracket spike in traditional withdrawals.

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