Roth Conversion Ladder Calculator
Plan annual Roth conversions, track each five-tax-year conversion milestone, estimate conversion taxes, and see whether your accessible bridge can cover the years before converted principal becomes usable under your modeled strategy.
1. Quick Mode Inputs
Tax framework: 2026First Conversion Target
Under the selected spending and inflation assumptions, the first conversion rung is modeled at approximately $69,556 to cover $69,556 of portfolio-funded spending when that rung reaches its five-tax-year milestone on Jan 1, 2041.
Your accessible startup bridge shows a modeled shortfall of approximately $175,640 before the first conversion rung reaches its milestone on Jan 1, 2041.
Your Roth Conversion Ladder Timeline
Annual conversion rungs mapped to their separate five-tax-year milestone dates (Jan 1)
| Conversion Year | Age | Target Conversion | Estimated Tax | 5-Yr Milestone | Age at Milestone | Spending Target Year | Status |
|---|---|---|---|---|---|---|---|
| Tax Year 2036 | Age 50 | $69,556 | $6,472 | Jan 1, 2041 | Age 55 | 2041 ($69,556) | Within Five-Year Period |
| Tax Year 2037 | Age 51 | $71,643 | $6,931 | Jan 1, 2042 | Age 56 | 2042 ($71,643) | Within Five-Year Period |
| Tax Year 2038 | Age 52 | $73,792 | $7,404 | Jan 1, 2043 | Age 57 | 2043 ($73,792) | Within Five-Year Period |
| Tax Year 2039 | Age 53 | $76,006 | $7,891 | Jan 1, 2044 | Age 58 | 2044 ($76,006) | Within Five-Year Period |
| Tax Year 2040 | Age 54 | $78,286 | $8,393 | Jan 1, 2045 | Age 59 | 2045 ($78,286) | Within Five-Year Period |
| Tax Year 2041 | Age 55 | $80,635 | $8,910 | Jan 1, 2046 | Age 60 | 2046 ($80,635) | Age 59½ Reached |
| Tax Year 2042 | Age 56 | $83,054 | $9,442 | Jan 1, 2047 | Age 61 | 2047 ($83,054) | Age 59½ Reached |
| Tax Year 2043 | Age 57 | $85,546 | $9,990 | Jan 1, 2048 | Age 62 | 2048 ($85,546) | Age 59½ Reached |
Can I Fund the First Five Tax Years?
Cash flow matching before the first conversion rung reaches its five-tax-year milestone
| Tax Year | Age | Planned Spending | Conversion Tax Cash | Total Bridge Need | Start Accessible Bridge | End Accessible Bridge |
|---|---|---|---|---|---|---|
| 2036 | 50 | $60,000 | $6,472 | $66,472 | $180,000 | $121,248 |
| 2037 | 51 | $61,800 | $6,931 | $68,731 | $121,248 | $56,088 |
| 2038 | 52 | $63,654 | $7,404 | $71,058 | $56,088 | $0 |
| 2039 | 53 | $65,564 | $7,891 | $73,455 | $0 | $0 |
| 2040 | 54 | $67,531 | $8,393 | $75,924 | $0 | $0 |
What This Calculator Shows
Annual Rungs
Plan annual conversions and track the amount assigned to each conversion year.
Five-Year Timeline
See the separate five-tax-year milestone associated with every modeled conversion.
Startup Bridge
Estimate the accessible assets needed before the first planned ladder rung reaches its milestone.
Tax & MAGI
See simplified conversion tax, bracket usage and optional MAGI effects by year.
How Does a Roth Conversion Ladder Actually Work?
Moving Pre-Tax Funds Over Time
A Roth conversion ladder is a way to move money from a pre-tax retirement account into a Roth IRA over multiple tax years. The conversion itself generally creates taxable income to the extent the converted amount has not already been taxed. The converted principal is then tracked under Roth IRA distribution rules.
Separate Five-Tax-Year Clocks
For someone under age 59½, each applicable taxable conversion has its own five-tax-year period for purposes of the 10% additional-tax recapture rules. A conversion made during 2026 therefore has a five-year period beginning January 1, 2026, while a 2027 conversion begins a separate period. That is what creates the ladder.
Visualizing Rungs & Milestones
The roth conversion ladder calculator lays those annual conversions on a calendar so you can see the conversion amount, estimated tax, five-year milestone and spending year connected with every rung.
Do I Really Need Five Years of Expenses Before Starting a Roth Ladder?
The Startup Period Concept
Not necessarily. The first five tax years are often called the startup bridge because new conversions have not yet reached their five-year milestones. But five times first-year spending is not automatically the correct amount.
Multiple Accessible Resources
You may already have cash, taxable brokerage assets, Roth IRA regular-contribution basis or older conversions. A spouse may still be working. Part-time income may cover part of your expenses. Spending can also rise with inflation, and conversion taxes need to be funded somewhere.
Detailed Bridge Tool Integration
The startup section therefore models the actual cash-flow gap instead of assuming every early retiree needs exactly five identical years of expenses. For a more detailed taxable-account and accessible-assets projection, use the Retirement Bridge Account Calculator.
How Much Should I Convert Each Year?
Different Planning Goals
There is no single conversion amount that works for every early retiree. One approach is to convert enough principal today to cover the portfolio-funded spending expected when that rung reaches its five-year milestone. Another is to keep conversions within a selected federal tax bracket. Some households monitor a separate MAGI ceiling because Marketplace health-insurance credits can also depend on income.
Future Inflation Adjustment
Those goals can produce different numbers. The default spending mode of this calculator looks five tax years ahead. If $70,000 of spending today becomes roughly $81,000 by the year the conversion is intended to support, converting only $70,000 may not fully cover that future year's spending.
Modeling One Conversion in Detail
The result is a planning target, not a recommendation. To analyze a single conversion tax year in detail with bracket headroom and tax math, explore the Roth Conversion Calculator.
Does a Roth Conversion Have to Sit for Exactly 60 Months?
Jan 1 Tax Year Start
No. The federal conversion rule is based on tax years rather than simply counting 60 months from the transaction date. For a calendar-year taxpayer, the five-year period starts with the first day of the tax year in which the conversion occurs. That means a conversion completed late in 2026 still has a period beginning January 1, 2026 for this purpose.
Tracking Tax-Year Milestones
Each conversion gets a separate period. The roth conversion ladder calculator间 tracks tax years and January 1 milestones rather than adding sixty months to every conversion date.
What Happens to Investment Growth on a Roth Conversion?
Category Differences Under IRS Rules
The converted money can remain invested and may grow, but the investment growth is not additional converted principal. Suppose $80,000 is converted and later grows to $100,000. The original $80,000 conversion and the $20,000 of investment earnings are different categories under Roth distribution rules.
Focusing on Converted Principal
That distinction matters for early retirees because the ladder is generally built around access to converted principal, not an assumption that all investment growth becomes spendable when the conversion reaches its five-year milestone. The calculator therefore shows converted principal separately from projected Roth account value.
Can I Use My Existing Roth IRA for the Ladder?
No Need for Separate Accounts
You do not need a new Roth IRA for every annual conversion. IRS ordering rules generally look across Roth IRA contribution and conversion categories. Regular contributions are treated as distributed first, followed by conversion and rollover contributions in order, and then earnings.
Tracking Conversion Lots Internally
The separate five-year periods belong to the conversion transactions, not to a collection of newly opened Roth IRA accounts. This planner therefore keeps a ledger of annual conversion lots while allowing the destination to be an existing Roth IRA.
How Do I Pay Taxes on Roth Conversions During Early Retirement?
Avoid Withholding From Conversion
This is one of the practical parts of a Roth ladder that can be overlooked. A taxable conversion can create federal and possibly state income tax in the conversion year. If the plan is to convert $80,000 into the Roth IRA, using part of that distribution for tax withholding can mean less than $80,000 actually reaches the Roth.
Separate Tax Cash Requirement
Amounts distributed rather than rolled over can also have separate early-distribution consequences before age 59½. For that reason, the calculator keeps the conversion amount and the tax-funding requirement separate. It shows estimated conversion tax as additional cash that may need to come from cash, taxable assets, current income or another user-identified source.
Can Roth Conversions Affect ACA Health Insurance?
MAGI vs Taxable Income
Yes, because taxable Roth conversion income can increase adjusted gross income and therefore Marketplace MAGI. That creates a different constraint from the federal income-tax bracket. A household may have room remaining in the 12% or 22% ordinary-income bracket while simultaneously approaching an income level that matters for Marketplace Premium Tax Credit calculations.
2026 FPL Rules & Tool Integration
For 2026, current federal Premium Tax Credit rules generally return to an income range through 400% of the applicable poverty guideline, subject to the other eligibility requirements. The ladder planner therefore keeps taxable income and MAGI separate. Use the Early Retirement Health Insurance Calculator for full premium and subsidy modeling.
What If I Reach Age 59½ Before My Conversion's Five-Year Period Ends?
The 10% Additional-Tax Exception
Age 59½ is a separate federal early-distribution milestone. The conversion five-year period is important for determining the additional-tax treatment of certain Roth distributions before age 59½. Reaching age 59½ can therefore make the five-year conversion clock less important for the 10% additional-tax question.
Qualified Distribution Rules
That does not mean every dollar of Roth investment earnings automatically becomes a qualified tax-free distribution. Qualified Roth distributions have a separate five-year rule and other requirements. The calculator shows age 59½ and each conversion milestone on the same timeline so the two rules are not confused.
Roth Ladder or 72(t) SEPP?
Roth Conversion Ladder
- Annual conversion amounts can vary by year
- Taxable conversion generally creates current income tax
- Conversion lots have separate five-tax-year periods
- Startup bridge assets often needed for the first 5 years
72(t) SEPP Series
- Qualifying periodic payment method without a 5-year startup bridge
- Payments must follow strict IRS calculation methods
- Strict duration and modification rules apply
Use the 72(t) SEPP Calculator to model periodic payments.
Roth Conversion Ladder Rules & Verified Sources
Publication 590-B (Roth IRA Distributions, Ordering Rules & 5-Year Conversion Clock)
Publication 590-A (Roth IRA Contributions & Conversion Treatment)
Form 8606 Instructions (Nondeductible IRA Basis & Pro-Rata Calculation)
Form 1099-R & Form 5498 Reporting Instructions
Rollovers of Retirement Plan and IRA Distributions
Topic 413 — Rollovers & Early Distributions
Publication 505 (Tax Withholding and Estimated Tax)
Revenue Procedure 2025-32 (2026 Tax Brackets & Standard Deductions)
Revenue Procedure 2025-25 (2026 ACA Premium Tax Credit Guidelines)
Marketplace MAGI Income Guidelines & Eligibility
Medicare IRMAA Premium Lookback Guidance
Use the Right Calculator for the Next Question
Move between the main calculator, focused tools, and plain-English guides without changing the site experience.
Related Tools
Roth Conversion Calculator
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Early Retirement Health Insurance Calculator
ToolSee how conversion income may interact with Marketplace MAGI while also modeling ACA, COBRA and pre-Medicare healthcare costs.
72(t) SEPP Calculator
ToolCompare a ladder with substantially equal periodic payments, which use a different set of early-access rules.
Rule of 55 Calculator
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Retire at 55 Calculator
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Roth Conversion Ladder Questions & Answers
What is a Roth conversion ladder?
A Roth conversion ladder is a planning strategy that converts pre-tax retirement money to a Roth IRA over multiple tax years. Each applicable conversion has its own five-tax-year period for purposes of the federal additional-tax rules that can apply before age 59½.
How much should I convert each year for a Roth conversion ladder?
The amount depends on the goal. You may size conversions around future spending, a selected tax-bracket ceiling, a MAGI ceiling or a custom annual plan. The calculator shows each method without recommending one.
Do I need five years of expenses to start a Roth conversion ladder?
Not always. The startup bridge can also use cash, taxable investments, Roth IRA regular-contribution basis, older conversion amounts and other spendable income. The relevant amount is the modeled cash-flow gap before ladder principal becomes available under the selected assumptions.
Does every Roth conversion have its own five-year period?
Yes. IRS Publication 590-B states that a separate five-year period applies to each conversion and rollover for the conversion additional-tax rules.
Does the Roth conversion five-year rule mean exactly 60 months?
No. For a calendar-year taxpayer, the period starts with the first day of the tax year in which the conversion occurs. The calculator therefore tracks conversion tax years rather than simply adding 60 months to the transaction date.
When does a 2026 Roth conversion reach its five-year milestone?
For a calendar-year taxpayer, the conversion five-year period begins January 1, 2026. The five tax years are 2026 through 2030, making January 1, 2031 the next calendar-year milestone.
Do I need a separate Roth IRA for each conversion?
No. Separate accounts are not what create the individual conversion periods. Roth IRA ordering and aggregation rules apply across the relevant Roth IRA contribution and conversion categories.
Can I use an existing Roth IRA for a conversion ladder?
Yes. A conversion can be deposited into an existing Roth IRA. Keep records of regular contributions, conversions, rollover amounts and distributions because the categories have different ordering and tax rules.
Are Roth IRA contributions available before converted amounts?
IRS ordering rules generally treat regular Roth IRA contributions as distributed first, followed by conversion and rollover contributions on a first-in, first-out basis, and then earnings.
Does investment growth on a Roth conversion become available after five years?
Investment growth is not additional conversion principal. Earnings are a separate category under Roth IRA distribution rules and can have different tax treatment.
What happens if I reach age 59½ before a Roth conversion reaches five years?
Age 59½ is a separate exception to the 10% additional tax on early distributions. The qualified-distribution treatment of Roth earnings has separate requirements, so the two five-year concepts should not be combined.
Is a Roth conversion taxed as income?
The portion of a pre-tax IRA or eligible retirement-plan amount that has not already been taxed is generally included in gross income when converted to Roth.
How do I pay the tax on a Roth conversion?
The calculator keeps conversion principal and conversion-tax cash separate. Taxes may be funded with cash, taxable assets, current income or another source. Withholding money from a distribution can reduce the amount actually converted and can create separate distribution consequences.
Does a Roth conversion count toward the Roth IRA contribution limit?
No. Roth conversions and rollover contributions do not consume the regular annual IRA contribution limit.
Can I reverse a Roth conversion if my tax bill is too high?
Conversions and eligible retirement-plan rollovers to Roth IRAs made in tax years beginning after 2017 generally cannot be recharacterized back to traditional treatment.
Does the pro-rata rule affect a Roth conversion ladder?
It can if you have nondeductible basis in traditional IRAs. Form 8606 is used to determine the taxable and nontaxable portions under the applicable IRA aggregation rules. This planner therefore does not let users simply choose only after-tax IRA dollars.
Does a Roth conversion increase ACA MAGI?
The taxable portion of a Roth conversion generally increases adjusted gross income and can therefore increase Marketplace MAGI. The ladder shows this separately from taxable income because the standard deduction does not reduce Marketplace MAGI.
Can Roth conversions affect Medicare IRMAA?
They can. Medicare IRMAA generally uses tax-return income from two years earlier when available, so a conversion near Medicare eligibility can affect a later Medicare premium year.
Can I convert my required minimum distribution to Roth?
No. Amounts required to be distributed for the year under the RMD rules are not eligible for rollover treatment. Additional amounts may potentially be converted after the required distribution is handled.
Should I start a Roth conversion ladder before I retire?
Starting earlier moves the five-year milestones earlier, but conversions made while working can stack on top of employment income. The calculator compares the timing and simplified tax effect without recommending a start year.
What is the difference between a Roth conversion ladder and 72(t) SEPP?
A Roth ladder creates annual conversions with future five-tax-year milestones. A qualifying 72(t) SEPP instead uses substantially equal periodic payments subject to separate payment and duration rules.
Can Rule of 55 reduce the amount I need for the Roth ladder bridge?
Potentially. Confirmed Rule of 55 employer-plan access may provide another source of early-retirement cash before age 59½, which can reduce the amount that must come from the startup bridge.
What forms report a Roth conversion?
Depending on the transaction, relevant records can include Form 1099-R, Form 5498 and Form 8606. Form 5329 can also become relevant for certain additional-tax situations.
Can I convert my entire traditional IRA in one year?
The regular IRA contribution limit does not cap Roth conversions, but converting a large pre-tax amount can create significant taxable income. Account availability, RMD rules and other tax consequences can also affect the transaction.
This planner tracks Roth conversions by tax year. For a calendar-year taxpayer, the modeled conversion five-year period begins on January 1 of the conversion tax year. Each conversion is tracked separately, while Roth IRA distributions are modeled using the IRS ordering framework rather than assuming a user can select a specific conversion lot for withdrawal.
The federal tax calculation is a simplified ordinary-income estimate and is not a complete tax return. Future federal tax brackets, Marketplace rules and Medicare thresholds are not treated as official until published by the relevant government agency. Investment growth on converted money is tracked separately from conversion principal. Account availability and employer-plan distribution rules should be confirmed before using a balance as a conversion source. This calculator provides educational estimates and general retirement-access and tax-planning context. It does not provide financial, investment, tax, legal, healthcare, benefits, or retirement advice.