Plan · 2026 federal brackets · Updated 1970
Should you convert to a Roth IRA?
Model a multi-year bracket-fill conversion using the 1970 federal brackets and see your after-tax retirement balance side-by-side.
When you'll start withdrawing
Spread across the conversion years below
1 = lump-sum, 5–10 = bracket-fill strategy
Wages, pension, etc. (excluding conversion)
Marginal rate when you eventually withdraw
Outside cash is almost always better
Total conversion tax
$66,000
Effective rate: 22.0%
After-tax @ retirement (no convert)
$1,048,432
All taxed at 24% on withdrawal
After-tax @ retirement (with convert)
$1,222,736
+$174,304 vs. no conversion
Traditional vs. Roth balance over time
Watch the Traditional bucket shrink as conversions move into the Roth.
Year-by-year conversion plan
| Age | Conversion | Marg. rate | Tax owed | Traditional | Roth |
|---|---|---|---|---|---|
| 59 | $60,000 | 22% | $13,200 | $470,800 | $64,200 |
| 60 | $60,000 | 22% | $13,200 | $439,556 | $132,894 |
| 61 | $60,000 | 22% | $13,200 | $406,125 | $206,397 |
| 62 | $60,000 | 22% | $13,200 | $370,354 | $285,044 |
| 63 | $60,000 | 22% | $13,200 | $332,078 | $369,197 |
| 64 | — | — | — | $355,324 | $395,041 |
| 65 | — | — | — | $380,197 | $422,694 |
| 66 | — | — | — | $406,810 | $452,283 |
| 67 | — | — | — | $435,287 | $483,943 |
| 68 | — | — | — | $465,757 | $517,819 |
| 69 | — | — | — | $498,360 | $554,066 |
| 70 | — | — | — | $533,245 | $592,850 |
| 71 | — | — | — | $570,573 | $634,350 |
| 72 | — | — | — | $610,513 | $678,754 |
| 73 | — | — | — | $653,249 | $726,267 |