Roth conversion taxes in Kansas (2026)
By Mario Bailey · Published · Last reviewed
Kansas taxes Roth conversions as ordinary income at graduated rates up to 5.7%. A conversion adds to your state taxable income in the year you convert, on top of federal tax. The table below shows the computed Kansas tax on a $50,000 conversion at three baseline income levels, using 2026 rates.
Computed example: $50,000 conversion
State tax only (federal not included), age 66, standard deduction, no other state adjustments. Computed with the same functions the calculator uses.
| Filing status | Baseline income | State tax without conversion | With $50,000 conversion | Tax on the conversion | Effective rate |
|---|---|---|---|---|---|
| Single | $40,000 | $1,622 | $4,472 | $2,850 | 5.7% |
| Single | $80,000 | $3,902 | $6,752 | $2,850 | 5.7% |
| Single | $150,000 | $7,892 | $10,742 | $2,850 | 5.7% |
| Married filing jointly | $40,000 | $963 | $3,758 | $2,795 | 5.6% |
| Married filing jointly | $80,000 | $3,188 | $6,038 | $2,850 | 5.7% |
| Married filing jointly | $150,000 | $7,178 | $10,028 | $2,850 | 5.7% |
Social Security and retirement income
Kansas does not tax Social Security benefits. A conversion can still raise the federally taxable share of your benefits through the provisional income formula.
Kansas two-bracket structure (3.5% / 5.7%) effective 2025 per HB 2236. Social Security fully exempt from 2024+. Government pensions (federal, military, state/local) fully exempt -- not modeled. Private pensions and IRAs are taxable. Standard deduction includes $2,250 personal exemption per filer.
FAQ
Does Kansas tax Roth conversions?
Yes. Kansas taxes Roth conversions as ordinary income at graduated rates up to 5.7%. Federal tax applies on top.
Does Kansas tax Social Security benefits?
No. Social Security benefits are not subject to Kansas income tax.
What is the top Kansas rate on a conversion in 2026?
5.7% at the highest marginal rate.
Model your Kansas conversion in the calculator
Rate data source: https://www.ksrevenue.gov/persontaxforms.html (Kansas DOR; two-bracket structure per HB 2236 (2024), effective 2025-2026; SS fully exempt from 2024; top rate 5.7%)