Tool · Early Retirement
The Roth Conversion Ladder
The FIRE playbook for bridging age 45 to 59½ without the 10% penalty. Enter your 401(k) balance, spending target, and bridge years — see the exact conversion amount each year, the five-year seasoning clock, and when each rung becomes withdrawable.
All calculations run locally in your browser. Your inputs are never transmitted or stored.
Inputs
When you stop earning wages and start the ladder.
Funds the first 5 years of spending while conversions season.
Conservative default: 5% (after inflation).
Recommended Annual Conversion
Every year, ages –
Tax on Each Conversion
At 2026 brackets, paid from bridge cash
Penalty-Free Access
Each rung seasons 5 tax years
Year-by-Year Ladder
First rung is withdrawable in Year 6
| Year | Age | Converted | Tax | Rung Unlocks | Trad Balance | Roth Principal |
|---|---|---|---|---|---|---|
Bridge Cash Viability
Your taxable bridge cash of covers years of spending plus the conversion-tax bill — enough to survive the 5-year seasoning gap. You'd exit the bridge with remaining.
Your bridge cash of runs out in year , before the first converted rung unlocks in year 6. Options: (a) build the bridge larger before retiring, (b) use regular Roth contribution withdrawals (they're always penalty-free), or (c) delay retirement by year(s).
How it works
The ladder mechanics
Why the 5-year clock matters
Under §408A(d)(3)(F), each Roth conversion starts its own 5-year seasoning clock. Withdraw the converted principal before 5 full tax years and before age 59½ and you owe the 10% early-withdrawal penalty on the portion that was taxable at conversion.
The ladder works because the clock begins January 1 of the conversion year. A conversion on December 31, 2026 is considered to have started January 1, 2026, so it seasons on January 1, 2031.
Earliest penalty-free withdrawal of rung R = January 1 of (conversion year + 5)
How the annual conversion amount is sized
To fund of annual spending from age 59½ backward, each rung must clear the target net of conversion tax. We compute the conversion gross such that:
gross − tax(gross, filing) = spending target
Taxes use the 2026 ordinary-income brackets for your filing status. Standard deduction is assumed since your only income is the conversion itself (no wages in retirement). This understates tax if you have other ordinary income; it overstates if you have substantial itemized deductions.
The three sources of penalty-free cash
1. Taxable bridge cash. Funds years 1–5 while conversions season. Also pays the conversion-tax bill each year (paying tax from the converted amount itself reduces the amount that seasons, which defeats the ladder).
2. Original Roth contributions. Regular Roth contributions (not conversions) are always penalty-free, any time, any age, per the §408A ordering rules. These are the tier-1 buffer.
3. Seasoned ladder rungs. Starting year 6, each rung unlocks in sequence. By the time you reach 59½, the ladder becomes moot — all Roth distributions are qualified.
What this tool does not model
Inflation is included in the real-return input, so spending is in today's dollars — but ACA subsidy cliffs, state income tax, Social Security taxation, and IRMAA thresholds (at 63+) are not modeled. For a conversion strategy around Medicare enrollment, use the Conversion Planner, which is IRMAA-aware.
This tool also assumes a clean ladder (same conversion each year). In practice you'd vary conversion size based on bracket space. The Planner handles that optimization.
User Guide
How to use the Roth Conversion Ladder visualizer
The Roth conversion ladder is a FIRE-popular technique for accessing retirement money before age 59½: convert Traditional dollars to Roth each year, wait five years, and withdraw the converted principal tax- and penalty-free. This tool visualizes your ladder — each year's conversion, each conversion's own five-year clock, and the schedule of when each tranche becomes accessible — and checks whether the ladder produces enough accessible dollars each year to fund your retirement spending.
The ladder works because of a quirk in the tax code: conversion principal can be withdrawn from a Roth without the 10 % early-withdrawal penalty after five years, regardless of your age. Each conversion starts its own five-year clock on January 1 of the conversion year. By stacking conversions in successive years, you create a rolling supply of accessible, penalty-free principal that bridges the gap between early retirement (often in the 50s) and age 59½, when all Roth assets become fully accessible. The ladder is usually superior to 72(t) Substantially Equal Periodic Payments (SEPPs), which lock you into a rigid schedule that the ladder doesn't require.
Who should use this tool
Early retirees or planned-early retirees who need to bridge the years between retirement (often in their 50s) and age 59½. If you're targeting retirement at 55, you need accessible principal by 55, which means starting conversions at 50 (five years prior). The tool lets you model exactly how many years of pre-retirement conversions are required to sustain a target spending level.
It's also useful for anyone with a partial early-retirement plan — for example, someone intending to reduce to part-time work at 55 with supplemental spending needs until Social Security at 67. The ladder can cover the gap between earned-income reduction and Social Security.
Readers planning to retire at or after 59½ don't need a ladder — normal Roth distribution rules apply, and the Multi-Year Conversion Planner is the better tool for that case.
Walking through the inputs
Starting age and planned early-retirement age. The tool backs out how many years of conversions you need to get the first tranche through its five-year clock by the time you retire. Retire at 55, start ladder at 50.
Starting Traditional balance. The Traditional IRA or 401(k) balance you're converting from. Rollover IRAs from former-employer 401(k)s count.
Target annual retirement spending. The dollars you need to pull out each year from the ladder. This drives the conversion size — each year's conversion must be large enough to supply the target spending five years later.
Conversion tax rate. Your marginal ordinary rate during the conversion years. Most ladders convert at 12 % or 22 %. Pre-retirement conversions happen while you still have wages, which often pushes the conversion into a higher bracket than post-retirement conversions would — a real cost of the ladder compared to waiting.
Assumed growth rate. The real rate of growth on both the Traditional balance (before conversion) and the Roth balance (during the five-year seasoning period). Default is 5 % real.
How to read the result
The tool returns a stacked-bar timeline showing each year's conversion, the five-year "seasoning" window, and the year the tranche becomes withdrawable. The timeline confirms whether your ladder produces enough accessible dollars each retirement year to fund target spending. If there's a shortfall in any year, the tool flags it and shows how much additional conversion in a prior year would close the gap.
The cost side of the output is the total federal (and state) tax paid on the conversion stream. For a typical ladder funding $40,000–$60,000 of annual early-retirement spending, total ladder tax is commonly $40,000–$80,000 over the five-year build-up — a real cost that has to be paid from outside the Roth (since paying from the Roth would defeat the point).
Common mistakes this tool prevents
- Starting the ladder too late. You need five years of conversions seasoned before the first year you plan to withdraw. Starting conversions at age 55 and planning to withdraw at age 56 doesn't work — the first tranche won't have completed its clock. The tool makes the five-year lag explicit.
- Confusing the per-conversion clock with the first-contribution clock. Each conversion has its own five-year clock, starting January 1 of the conversion year. Even if your Roth has been open 20 years, a conversion made today still has a fresh clock for penalty-free access to converted principal. The first-contribution clock (for earnings qualification) is a separate rule.
- Ignoring earnings. The ladder withdraws converted principal tax- and penalty-free after five years; earnings on the conversion are still subject to the age-59½ rule (or a §72(t) exception). The tool assumes you withdraw only principal; if you need more than that, you'll face the penalty on earnings unless you're 59½.
- Over-filling brackets on conversions. Converting into the 24 % bracket when you could have spread conversions to stay in 12–22 % leaves money on the table. The tool flags when a conversion is filling a bracket higher than your likely post-retirement bracket.
- Forgetting to pay conversion tax from taxable dollars. Paying conversion tax from the Roth itself (by taking a larger conversion and withholding tax from it) forfeits the tax-free growth on those dollars. Always pay conversion tax from taxable savings.
- Not planning for state tax. Conversion tax includes state tax in most states. A California retiree building a ladder pays roughly 9 % additional state tax on each conversion; a no-income-tax-state retiree pays zero. The tool accepts a state rate input.
- Assuming the ladder works if you still have earned income. If you're still working and your income is high enough, each conversion can push you into a higher bracket than you'd be in after retirement — making the ladder more expensive than simply waiting. The tool compares ladder cost against "wait and convert later."
After you plan the ladder
Execute conversions early each calendar year to start the five-year clock as soon as possible — a January conversion begins its clock on January 1 of that year, so you're effectively trading "earlier" for "five years and one day" instead of "four years, one month" had you converted in December. This small timing choice is worth running the numbers on.
The Conversion Rules pillar covers the five-year clock mechanics in full, including the coordination of the per-conversion clock with the first-contribution clock and the §72(t) exceptions.