Roth Conversion Ladder Calculator
Plan your early retirement withdrawal strategy using systematic Roth conversions to access retirement funds penalty-free before age 59½.
This funds your expenses during the 5-year Roth seasoning period.
Set to 0% if your state has no income tax.
Annual Roth Conversion
$126,950
Tax cost: $17,505/year (13.8% effective)
Bridge Fund Coverage
5.0 yrs
Covers full seasoning period
Ladder Ready Age
50
First seasoned conversion accessible
Annual Tax Cost
$17,505
13.8% effective rate
Conversion Amount
$126,950
Fills 12% bracket
Account Balances Over Time
Annual Conversions & Tax Cost
How to Use This Calculator
Enter your current account balances, expected retirement age, and annual expenses. The calculator determines your optimal annual Roth conversion amount (filling the lowest tax brackets), the tax cost of each conversion, and whether your taxable bridge fund covers the 5-year seasoning period. The charts show how your account balances shift from Traditional to Roth over time.
What Is a Roth Conversion Ladder?
Early retirees face a common problem: most of their savings sit in Traditional 401(k)s and IRAs, but withdrawing before age 59½ triggers a 10% penalty on top of income tax. The Roth conversion ladder solves this by systematically moving money from Traditional to Roth accounts during early retirement.
Here's how it works: each year after you retire, you convert a portion of your Traditional IRA to a Roth IRA. You pay ordinary income tax on the conversion amount, but there's no 10% penalty. After 5 years, the converted principal can be withdrawn from the Roth completely penalty-free. By repeating this annually, you create a pipeline of accessible funds.
The key challenge is the 5-year gap between your first conversion and when that money becomes accessible. During this “bridge period,” you fund expenses from taxable brokerage accounts, Roth contributions (which can always be withdrawn without penalty), or other sources.
The Two 5-Year Rules
There are two distinct Roth IRA 5-year rules, and confusing them is a common and costly mistake:
Rule 1 — Contributions: Your Roth IRA must have been open for at least 5 tax years for earnings to be withdrawn tax-free and penalty-free (after age 59½). Direct contributions can always be withdrawn at any time without tax or penalty.
Rule 2 — Conversions: Each conversion has its own 5-year clock. The converted principal can be withdrawn penalty-free starting 5 years after the conversion date. This is the rule that governs the ladder strategy.
Frequently Asked Questions
What is a Roth conversion ladder?
A strategy for early retirees to access Traditional IRA/401(k) funds before age 59½ without the 10% penalty. Convert annually, wait 5 years, then withdraw the converted principal penalty-free.
What is the 5-year rule for conversions?
Each conversion has its own 5-year clock. A conversion made in 2025 becomes accessible in 2030. This creates a pipeline of accessible funds after the initial waiting period.
How much should I convert each year?
The optimal amount fills your current tax bracket without crossing into the next. For MFJ filers, this typically means the top of the 12% bracket (~$127,000 gross in 2025). For single filers, the 22% bracket (~$118,000 gross).
What is a bridge fund?
A taxable brokerage or cash reserve covering expenses during the 5-year seasoning period. Target approximately 5 years of annual expenses.
Roth ladder vs. 72(t)/SEPP?
The ladder offers more flexibility — you choose conversion amounts yearly and can adjust. 72(t) locks you into fixed payments for 5 years or until 59½, with penalties for early modification. Most FIRE practitioners prefer the ladder.
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Methodology & Assumptions
This calculator uses 2025 federal tax brackets and standard deductions. The optimal conversion amount fills the target bracket (12% for MFJ, 22% for single) without exceeding it. The projection models four phases: pre-retirement (accumulation), bridge period (taxable withdrawals + conversions), ladder-active (seasoned conversion withdrawals), and post-59½ (standard Roth access).
This tool provides estimates for educational purposes. It is not financial advice. Consult a fee-only financial planner before implementing a Roth conversion ladder strategy.