How does the 5-year rule work for Roth conversions?

The IRS requires that each Roth conversion wait 5 years before the converted principal can be withdrawn tax and penalty free (if you are under 59½). Each conversion batch has its own 5-year clock — money converted in 2026 is accessible in 2031, money converted in 2027 is accessible in 2032, and so on. The 5-year clock starts on January 1 of the year you make the conversion, regardless of when during the year you converted. Earnings on conversions have an additional 5-year holding requirement and require age 59½ to withdraw tax-free.

How much should I convert each year in a Roth ladder?

The optimal amount to convert each year depends on your tax bracket and your expected annual spending. A common strategy is to fill the 12% bracket — for a single filer in 2026 with no other income, that means converting up to about $34,300 of taxable income (the 12% bracket tops out at $50,400, minus the $16,100 standard deduction). Married filers can fill up to about $68,600 in the 12% bracket. Convert too little and you deplete the traditional IRA slowly; convert too much and you push into the 22%+ brackets unnecessarily.

What funds living expenses in years 1–5 of the ladder (the bridge period)?

In years 1–5, no conversion has yet seasoned for 5 years, so you need other sources for spending: (1) existing Roth IRA contributions (principal only — always accessible penalty-free, since the 5-year rule only applies to conversions and earnings), (2) taxable brokerage accounts (long-term capital gains rates apply), (3) cash savings or a money market account, or (4) part-time income. This "bridge" period is typically 1–5 years. The more existing Roth principal and taxable assets you have, the smoother the bridge.

Does the 5-year rule for conversions apply after age 59½?

No. Once you reach age 59½, the 10% early withdrawal penalty no longer applies to Roth conversions regardless of when they were made. The 5-year conversion ladder is only needed for early retirees under 59½. However, a separate 5-year holding period still applies to earnings — if you withdraw Roth earnings before the account has been open for 5 years, those earnings may be taxable even after 59½.

Roth Conversion Ladder Calculator 2026 — FIRE 5-Year Rule Planner

Account Balances

Traditional IRA / pre-tax 401(k) balance

Total pre-tax retirement assets to convert

Existing Roth IRA balance (bridge funds)

Roth contributions always accessible penalty-free

Conversion & Spending

Annual conversion amount

Sized to fill your low tax bracket each year

Annual spending in retirement

What the ladder needs to fund per year

Tax & Age

Current age

yrs

Age at the start of your ladder (year 0)

Marginal tax rate on conversions

Your bracket with no other income in retirement

2026 Bracket Targets

Stay in 12% (single)≤ $34,300

Stay in 12% (married)≤ $68,600

Stay in 22% (single)≤ $89,600

Stay in 22% (married)≤ $179,200

Assumes no other income; subtract any wages, SS, or dividends

Ladder Summary

$60,000

Total tax on conversions

$250,000

Bridge gap (years 1–5)

> 15 yrs

Ladder fully funds spending

Year 13

Traditional IRA depleted

Bridge gap (5-year total)

$250,000

Covered by existing Roth

$60,000

Additional bridge needed

$190,000 from taxable accounts or part-time income

Year-by-Year Ladder Timeline(5-year rule: each conversion unlocks 5 years after it's made)

Year	Age	Converted	Tax Paid	Trad. Balance	Ladder Access	Bridge Gap
1	41	$40,000	$4,800	$460,000	5-yr wait	$50,000
2	42	$40,000	$4,800	$420,000	5-yr wait	$50,000
3	43	$40,000	$4,800	$380,000	5-yr wait	$50,000
4	44	$40,000	$4,800	$340,000	5-yr wait	$50,000
5	45	$40,000	$4,800	$300,000	5-yr wait	$50,000
6	46	$40,000	$4,800	$260,000	$40,000	$10,000
7	47	$40,000	$4,800	$220,000	$40,000	$10,000
8	48	$40,000	$4,800	$180,000	$40,000	$10,000
9	49	$40,000	$4,800	$140,000	$40,000	$10,000
10	50	$40,000	$4,800	$100,000	$40,000	$10,000

Bridge years (1–5): fund from existing Roth or taxableLadder active: conversion from 5 years ago is accessible

How to Read This Table

Converted — the amount moved from traditional IRA to Roth this year (taxable event).
Tax Paid — federal tax on that conversion at your selected marginal rate.
Ladder Access — the conversion made 5 years earlier, now accessible penalty-free for spending.
Bridge Gap — how much of your annual spending the ladder doesn't yet cover; must come from existing Roth principal, taxable accounts, or part-time income.

Disclaimer

This tool provides estimates for educational purposes only and is not tax or investment advice. Results use simplified marginal rates and do not account for state taxes, IRMAA, NIIT, the pro-rata rule, ACA premium subsidies, or your full financial situation. Consult a qualified tax professional before implementing a Roth conversion ladder strategy.

How this is calculated

The Roth conversion ladder models a multi-year FIRE strategy for accessing pre-tax retirement funds penalty-free before age 59½, following IRS rules under IRC Section 408A:

Each year, you convert a set amount from your Traditional IRA to a Roth IRA. This is a taxable event — the converted amount is added to your ordinary income.
Each conversion batch has its own 5-year clock (IRC §408A(d)(2)(F)). Money converted in January 2026 becomes accessible penalty-free in January 2031.
Once you turn 59½, the 10% early withdrawal penalty no longer applies to conversions — but earnings still need their own 5-year seasoning.
Tax on each conversion = conversion amount × your marginal federal rate. This tool uses a flat rate you select; actual tax depends on your full income picture.
Bridge gap = annual spending − ladder access. In years 1-5 (before the first rung unlocks), you must fund spending from existing Roth contributions, taxable brokerage, or other sources.

Worked example: A 40-year-old with $500,000 in a Traditional IRA converts $40,000/year at 12% marginal rate. Tax per year: $4,800. In year 6 (age 45), the year-1 conversion of $40,000 unlocks penalty-free. By year 10, the ladder produces $40,000/year in accessible funds. Total tax over 15 years: ~$72,000 (at 12%), vs. potentially 22-24% on RMDs later.

Sources

Reviewed against 2026 figures · Last updated June 11, 2026 · Written by Zhisán

zhisan

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Full-stack developer passionate about building useful tools for the developer community. Creates free, privacy-focused web applications that solve everyday coding problems.

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What is Roth Conversion Ladder — FIRE Planning Guide?

The Roth conversion ladder is the cornerstone strategy for early retirement (FIRE). Because you cannot access traditional IRA and 401(k) funds before age 59½ without a 10% penalty, FIRE retirees convert pre-tax money to a Roth IRA year by year. Each converted batch must wait 5 years before being withdrawn penalty-free under IRC Section 408A. By converting consistently — starting before you retire — you build a ladder where each rung unlocks exactly when you need it, providing penalty-free income well before the standard retirement age. The strategy works because Roth conversions are taxable events but not subject to the early withdrawal penalty; only subsequent withdrawals before the 5-year seasoning period trigger the 10% penalty. Once each rung seasons for 5 years, that money can be spent freely. The key challenge is the bridge period: in years 1–5 before the first rung unlocks, you must fund living expenses from existing Roth contributions, taxable brokerage accounts, or other savings. This calculator models the entire 15-year ladder, showing exactly when each conversion becomes accessible and how much bridge funding you need.

How to Use

Enter your current traditional IRA or pre-tax 401(k) balance.
Set your planned annual conversion amount — ideally sized to stay within the 12% or lower tax bracket.
Enter your expected annual spending in early retirement.
Set your existing Roth balance — this funds the bridge in years 1–5 while the ladder builds.
Choose your marginal tax rate on the conversions (based on your other income and filing status).
The 15-year table shows each year's conversion, the 5-year unlock date, and the funding gap covered by your existing Roth or taxable accounts.

Why Use This Tool?

Visualize the exact year each conversion batch becomes accessible penalty-free.

See the bridge funding gap in years 1–5 before the ladder starts producing income.

Track total tax paid to convert your entire traditional IRA at low rates.

Optimize conversion size: large enough to deplete the IRA before RMDs begin, small enough to stay in a low bracket.

Works for Roth IRA conversions from traditional IRA, SEP IRA, SIMPLE IRA, and 401(k) rollovers.

Free — no signup required.

Tips & Best Practices

Start the ladder 5 years before your target retirement date so the first rung is already accessible when you leave work.
The optimal conversion amount fills your tax bracket without triggering IRMAA, NIIT, or ACA subsidy cliffs.
Pay conversion taxes from taxable brokerage funds, not the IRA itself — this preserves more in the Roth.
In years where you have large deductions (mortgage interest, medical expenses), you can convert more at 0% or 10%.
Existing Roth contributions (not earnings) can always be withdrawn penalty-free — these are your best bridge asset.
If you reach age 59½ while the ladder is running, the 5-year rule no longer applies to the conversion penalty — but earnings still need 5 years.

Frequently Asked Questions

What is a Roth conversion ladder?

A multi-year strategy for FIRE retirees: convert traditional IRA money to Roth each year, wait 5 years, then withdraw penalty-free. Each year's conversion is a rung — once the ladder is running, every year a new rung unlocks to fund living expenses.

How does the 5-year rule work for each conversion?

Each Roth conversion has its own 5-year clock starting January 1 of the conversion year. Money converted in 2026 is accessible penalty-free in 2031; money converted in 2027 unlocks in 2032. This per-conversion clock (not the account age) is what the ladder exploits. Once you turn 59½, the conversion penalty no longer applies at all.

How much should I convert each year?

Ideally, fill your low tax bracket without triggering higher marginal rates. For a single FIRE retiree with no other income in 2026: the 12% bracket covers taxable income up to $50,400 ($16,100 standard deduction + $34,300 at 12%), so you can convert up to about $34,300 and owe roughly $4,100 in federal tax. Married couples can convert up to ~$68,600 in the 12% bracket.

What covers spending in years 1–5 before the ladder produces income?

Bridge assets: (1) existing Roth IRA contributions — principal is always accessible penalty-free; (2) taxable brokerage accounts — long-term gains taxed at 0%–15%; (3) cash or money-market savings; (4) part-time or side income. Having 5+ years of bridge assets is the key to a clean early retirement.

What happens to traditional IRA money I never convert?

It stays in the traditional IRA and is subject to Required Minimum Distributions (RMDs) starting at age 73 (or 75 under SECURE 2.0). RMDs are taxed as ordinary income and can push you into higher brackets, trigger IRMAA surcharges, and cause Social Security taxation. The ladder's goal is to deplete (or dramatically reduce) the traditional IRA before RMDs begin.

What does this calculator NOT cover?

This calculator does not model state income taxes, IRMAA Medicare surcharges, the 3.8% NIIT, the pro-rata rule for IRAs with both pre-tax and after-tax money, ACA premium subsidy cliffs, investment growth on converted funds, or the impact on Social Security taxation. It uses a flat marginal rate rather than progressive brackets. Consult a tax professional for a complete analysis.

Real-world Examples

FIRE retiree at age 40 with $500K traditional IRA

Converting $40,000/year at 12% marginal rate, spending $50,000/year, with $60,000 in existing Roth.

Input

Trad. IRA: $500,000 | Annual conversion: $40,000 | Spending: $50,000/yr | Age: 40 | Rate: 12%

Output

Tax per year: $4,800 | Bridge gap (5 years): $250,000
Covered by existing Roth: $60,000 | Additional bridge needed: $190,000
Ladder fully funds spending by Year 6 | IRA depleted by Year 13
Total tax paid: ~$72,000 over 15 years