Iowa · Roth IRA Conversion Strategy
Roth IRA Conversion Strategy in Iowa (2026)
Convert Traditional IRA to Roth in low-income years for tax-free growth. Iowa has a flat 3.8% income tax, so a Iowa filer's combined marginal rate on the next dollar at $65,573 of income is about 15.8% (12% federal + 3.8% IA).
2026 savings example for Iowa
Planning estimate for a single filer earning $65,573 (Iowa median household income in LevyIO's state dataset) who removes $5,000 from taxable income. Federal tax uses the 2026 IRS brackets after the $16,100 standard deduction; IA tax uses the state brackets in LevyIO's dataset and assumes the state follows the federal treatment.
Estimated total savings
$790
Federal savings
$600
$5,689 → $5,089 · 12% bracket
IA state savings
$190
$1,937 → $1,747 · 3.8% marginal
Combined marginal rate
15.8%
≈ $158 saved per $1,000 deducted
Federal × Iowa marginal rates (2026, single)
Gross-income ranges include the federal standard deduction. The IA column is the state marginal rate at the midpoint of each range. The last column is the tax saved per $1,000 deducted at that combined rate.
| Federal bracket | Gross income (single) | IA marginal | Combined | Per $1,000 |
|---|---|---|---|---|
| 10% | $16,100 - $28,500 | 3.8% | 13.8% | $138 |
| 12% | $28,500 - $66,500 | 3.8% | 15.8% | $158 |
| 22% | $66,500 - $121,800 | 3.8% | 25.8% | $258 |
| 24% | $121,800 - $217,875 | 3.8% | 27.8% | $278 |
| 32% | $217,875 - $272,325 | 3.8% | 35.8% | $358 |
| 35% | $272,325 - $656,700 | 3.8% | 38.8% | $388 |
| 37% | Over $656,700 | 3.8% | 40.8% | $408 |
Eligibility & forms
Anyone with Traditional IRA or 401(k) balance
- Pay tax on converted amount
- No income limits
- 5-year holding rule
Federal forms: Form 8606, Form 1040
Iowa filing notes
Iowa's flat 3.8% is a significant improvement. Federal standard deduction applies. Retirement income exclusions available. Consider high property taxes when evaluating housing.
Common mistakes: Converting too much in one year; Not planning for tax bill.
Frequently asked questions
How much can the Roth IRA Conversion Strategy save a Iowa taxpayer in 2026?
In LevyIO's example, a single filer with $65,573 of income (the Iowa median household income in our state dataset) who removes $5,000 from taxable income saves about $600 in 2026 federal tax (12% marginal bracket) plus about $190 in Iowa tax (3.8% state marginal rate), roughly $790 combined. It is a planning estimate computed from the 2026 IRS brackets and LevyIO's IA bracket data, not a survey figure.
What is the Iowa income tax rate for 2026?
Iowa has a flat 3.8% income tax. The IA standard deduction in LevyIO's dataset is $14,600 single / $29,200 married. Flat 3.8% in 2025 (was progressive to 8.53%). Uses federal standard deduction. Inheritance tax repealed 2025.
Who qualifies for the Roth IRA Conversion Strategy in Iowa?
Anyone with Traditional IRA or 401(k) balance. The federal rules are the same in every state; the requirements are: Pay tax on converted amount; No income limits; 5-year holding rule. Iowa filers should confirm on the IA return whether the state follows the federal treatment.
Which forms do I file to claim the Roth IRA Conversion Strategy?
Federal: Form 8606, Form 1040. Iowa: check the Iowa Department of Revenue instructions for the matching state schedule. Common mistakes: Converting too much in one year; Not planning for tax bill.
Roth IRA Conversion Strategy in other states
Sources
Reviewed 2026-09-17. Estimates are educational planning figures computed from the IRS 2026 inflation adjustments and LevyIO's state bracket dataset; they are not tax advice.