Purposeful FIRE🪣Retirement Tax Bracket Gap Planner
Find how much room you have left in your current federal tax bracket for Roth conversions or additional income. Early retirement gap years, before Social Security and RMDs kick in, are often the best window.
Your Numbers
Your Results
| Bracket | Rate | Status |
|---|---|---|
| → You are here | 10% | Current |
| 12% | Above | |
| 22% | Above | |
| 24% | Above | |
| 32% | Above | |
| 35% | Above | |
| 37% | Above |
What Is Retirement Tax Bracket Gap Planner?
One of the most valuable and underused opportunities in early retirement is the 'gap year' window: the period between when you stop working and when Social Security, RMDs, or a pension start. During this window, your taxable income can be very low, sometimes just investment income or small Roth conversion amounts. That low income puts you in a lower federal tax bracket than you're likely to be in later, creating a window to do Roth conversions or realize capital gains at little or no cost.
This calculator takes your projected retirement income, subtracts the standard deduction, and shows you how much room remains in your current bracket before you'd cross into the next one. That room is the amount you could convert from a Traditional IRA to a Roth IRA (or realize in long-term capital gains) at your current bracket rate.
How This Calculator Works
The calculator applies the 2024 standard deduction to your gross income to find taxable income, then matches that to the 2024 federal brackets to find your current marginal rate and how much room remains before the next bracket begins. Tax on filling the bracket (the conversion amount times the current rate) is calculated separately.
Personal Considerations
Most people think of tax planning as 'minimize taxes now.' Roth conversion planning inverts this: it asks 'what is the cheapest rate at which I can pay taxes forever?' Voluntarily paying taxes now at 12% to convert Traditional IRA money to Roth is rational if you expect to be in the 22% or 24% bracket when RMDs begin at 73. You're locking in a lower rate in exchange for a higher future rate.
The emotional resistance to Roth conversions is real: writing a check to the IRS when you don't have to feels wrong. Reframing it as 'prepaying a bill that will be larger later' helps. A concrete version: a $50,000 conversion at 12% costs $6,000 today. If you're in the 22% bracket in 20 years when you'd otherwise have to take that same $50,000 as an RMD, it costs $11,000. The conversion saves $5,000 in real terms, plus the Roth balance will have grown tax-free for 20 years.
If what you're feeling goes beyond what a calculator can help with, licensed clinicians are available at SanaNetwork.com, a referral network founded by this site's founder, Dr. Yoendry Torres.
Frequently Asked Questions
The optimal window is usually the years between retirement and when Social Security, RMDs, and pension payments begin. During this period, income is often at its lowest, brackets are widest (especially for MFJ), and you have the most room to convert at low rates.
Yes, and this is exactly the strategy this calculator is designed to help you execute. You can convert any dollar amount, and stopping at the bracket ceiling keeps the marginal rate on the conversion as low as possible.
This calculator shows only federal tax. If your state has income tax, Roth conversion income is typically taxable at the state level as well. Some states have more favorable treatment of retirement income; a few have no income tax at all. Factor state taxes into your total conversion cost.
Yes, if your modified adjusted gross income (MAGI) exceeds certain thresholds ($103,000 single or $206,000 MFJ in 2024), your Medicare Part B and Part D premiums increase via Income-Related Monthly Adjustment Amounts (IRMAA). Large Roth conversions can temporarily push you into a higher IRMAA tier, which should be weighed against the long-term tax benefit of the conversion.