Roth IRA in Wisconsin: Taxes, Retirement Subtraction & Moving Rules (2026)

A practical checklist for Wisconsin residents—not a grade, state ranking or personal tax estimate.

Does Wisconsin tax a Roth conversion?

Generally, the federally taxable portion enters state income for a full-year resident. A qualifying retirement-income subtraction may change the state result. Read the explanation.

Is every dollar I convert taxable?

Not necessarily. Federal after-tax IRA basis matters. This guide does not calculate special Wisconsin-only basis or automatically import another state's basis. Read the explanation.

What are Wisconsin's 2026 rates?

3.5%, 4.4%, 5.3% and 7.65%, applied to slices of Wisconsin taxable income—not the entire conversion at the top rate. Read the explanation.

Can the age-67 subtraction cover a conversion?

For eligible full-year Wisconsin residents, conversion income can share the retirement-income pool: up to $24,000, or $48,000 jointly when both spouses qualify. Other eligible income uses that same pool; specified credits are forgone. Part-year residents need a separate calculation; nonresidents cannot claim the subtraction. Read the explanation.

Is there a local conversion-income tax?

Wisconsin law prohibits political subdivisions from imposing an income tax. Do not add county or city sales-tax rates to a Roth conversion. Read the explanation.

Is there a separate early-withdrawal charge?

Generally, Wisconsin adds 33% of the applicable federal retirement additional tax. That is not 33% of the withdrawal. A properly completed conversion is a different transaction. Read the explanation.

How much extra state tax would I owe?

The examples show unused subtraction capacity and a bracket-only tax difference. They do not calculate your return, credit tradeoff or benefit changes. Read the explanation.

What changes if I move?

Domicile and when the distribution is received matter. A temporary absence is not a move; wage reciprocity is not the retirement-income rule. Read the explanation.

A Roth IRA is an account with federal tax rules. Living in Wisconsin adds a state-return question; it does not turn every deposit or withdrawal into the same kind of income.

Keep the after-tax records. Nondeductible IRA contributions can create federal basis—money already taxed. Federal allocation rules determine how much is recovered in a conversion; you cannot simply label one selected account's money as all after-tax. Form 8606 and prior returns matter. Historical Wisconsin-only or prior-state basis needs a separate review; this page supplies no automatic adjustment for it.

For the federal starting point, see IRA eligibility, Roth conversions and withdrawal rules. A workplace-plan rollover has additional operational rules; do not use an IRA-conversion example as a complete plan-rollover checklist.

For a full-year Wisconsin resident who is at least 67 at the end of the tax year, eligible retirement income can qualify for a Wisconsin subtraction of up to $24,000. If both spouses qualify and file jointly, the ceiling is $48,000 across their combined eligible income. That joint amount is not rigidly divided into a separate allowance for each person's own income.

If only one spouse meets the age requirement, the smaller ceiling applies to that qualifying spouse's eligible income. Already-exempt income cannot be subtracted twice. The age-67 provision has no overall-income phaseout, but that does not make every type of retirement-related payment eligible.

The tradeoff is elsewhere on the return. Claiming this subtraction prevents claiming credits listed in Wisconsin Statutes §71.07 in the same year, including otherwise eligible carryovers. Compare the complete return with and without the election. This guide does not decide eligibility for credits outside that section; do not assume a separately named benefit survives the election. Withholding and estimated tax payments are still payments you can claim; they are not the tax credits being surrendered. The standard deduction and exemptions are also separate from credits.

The older, low-income age-65 retirement subtraction is a different provision. Its eligibility depends on federal adjusted gross income; this Wisconsin subtraction does not reduce federal AGI. Social Security is separately exempt from Wisconsin income tax. Neither distinction creates extra conversion room under the age-67 pool.

Required minimum distributions can be eligible income for the subtraction, but an RMD itself cannot be converted to a Roth IRA. Take care not to turn a state subtraction rule into permission for a federally prohibited transaction.

These are hypothetical full-year Wisconsin residents. All listed pension and conversion income is otherwise eligible, taxable retirement income; no amount is already exempt or recovered basis. Each household elects the subtraction. Showing a pension first is a way to measure the extra effect of a conversion—not a legally required ordering rule.

The single household's calculation is $24,000 minus $18,000 = $6,000 of remaining capacity. Of the $10,000 conversion, $4,000 is not covered by this subtraction.

Do not read the last row as the final tax bill—or even final Wisconsin taxable income. Other adjustments, deductions, exemptions and the lost-credit tradeoff still matter. The state subtraction does not remove federally taxable conversion income from the federal return. The workbook lets you vary the two income amounts while keeping these eligibility assumptions fixed.

The table uses Wisconsin taxable income, after applicable state adjustments, deductions and exemptions. These are the full-year-resident schedules in Wisconsin's 2026 estimated-tax instructions. The general DOR rate FAQ still displayed 2025 when checked; we did not relabel those older thresholds.

A bracket-only illustration: suppose a single filer's Wisconsin taxable income is already known to change from $40,000 to $60,000. Applying the published schedule gives $1,624.01 before and $2,576.46 after: a $952.45 difference before credits and other taxes.

This does not say that a conversion equal to the difference between those income amounts will produce that result. Wisconsin's standard deduction depends on income and can shrink as income rises. Subtractions, credit eligibility, basis and other return items can also change. The workbook's bracket tab accepts stipulated taxable-income figures; it is not a personal conversion-tax calculator.

Wisconsin generally adds a retirement-related charge equal to 33% of the applicable federal additional tax. The multiplier applies to the federal tax, not to the amount taken out. Ordinary income tax is another question again.

A properly completed Roth conversion is not itself subject to the federal early-distribution tax. But cash withheld or kept instead of converted may be an unconverted distribution, and later withdrawals of converted amounts can raise separate recapture questions. Exceptions and Wisconsin conformity need to be checked for the particular distribution.

Wisconsin looks at your domicile: your permanent home, including a home you intend to return to while away. A winter elsewhere, a new mailing address or a short trip to complete a conversion does not by itself end Wisconsin residence.

Wisconsin's wage-reciprocity agreements cover employee compensation with specified states; they are not the rule that exempts qualifying nonresident retirement income. Conversely, moving into Wisconsin does not exempt retirement income merely because the account or former employer is elsewhere.

If an indirect conversion begins before a move and finishes afterward, get transaction-specific advice rather than assuming that the receiving account's date settles the state issue. This guide does not model split-date transactions, imported state-only basis or a part-year return.

Education savings and a Roth IRA are not interchangeable

Eligible contributions to Wisconsin's Edvest or Tomorrow's Scholar plans have a state subtraction. A qualifying 529-to-beneficiary-Roth rollover has separate federal limits and conditions; it is not a general way to move any unused education balance into any family member's Roth IRA.

Wisconsin guidance distinguishes the qualified rollover's treatment from the treatment of an unused state deduction carryover. Even when a qualifying rollover creates no Wisconsin addback within the allowed limits, it can reduce that carryover. The short-holding-period rule can also affect contributions withdrawn within a year. Keep contribution, rollover and carryover records together; do not count the same state benefit twice.

A tax-free withdrawal may still matter to a benefit

Wisconsin's homestead-credit household-income rules are not simply federal AGI. Taxable conversion income matters, and nontaxable IRA withdrawals can also count. These household-income rules alone do not establish entitlement to the credit, including when the age-67 subtraction is claimed. Check the benefit's own worksheet before assuming that a state subtraction or Roth withdrawal leaves eligibility unchanged.

Public employees may see several different retirement labels

The Wisconsin Deferred Compensation Program is a governmental 457(b) plan, not a Roth IRA. Wisconsin Retirement System pension contributions are another arrangement. A Roth option inside a workplace plan does not make the plan an IRA or combine all its operating rules with IRA rules.

“Is my Roth IRA protected?” is several questions, not one. Wisconsin has a conditional retirement-account exemption, but an account label is not a guarantee against every claim.

We do not give inherited accounts a blanket Wisconsin protection verdict here, or promise that money remains protected after it leaves the account. Get a Wisconsin attorney's account-specific review before relying on an exemption, changing beneficiaries or moving assets in response to a claim.

Wisconsin currently imposes no state estate or inheritance tax on a current death. Those death-transfer taxes are separate from income tax, federal estate tax and account-protection rules. See the national bankruptcy guide and divorce guide for the federal framework.

No local income-tax add-on: Wisconsin Statutes §66.0611 prohibits political subdivisions from taxing income. County and city sales-tax rates are not an extra rate on a Roth conversion.

The subtraction examples isolate one income adjustment. The bracket example isolates the statewide rate schedule. Neither includes a full federal return, Medicare premiums, Marketplace assistance, benefit eligibility, every Wisconsin modification, credit comparison, special basis history or another state’s taxes. Missing components are not zero.

Do not assume the state subtraction removes a filing requirement or settles tax payments. Conversion income can still require reviewing federal and Wisconsin withholding or estimated payments. Use the current year's payment instructions and your full return, not the workbook's illustration, to decide what is due.

For records, keep Forms 1099-R and 8606, prior federal and state returns, evidence of any already-taxed contributions, retirement-income totals, credit carryovers and move dates. Those facts let a tax professional compare complete alternatives instead of applying a headline rate to an account balance.

Use the worked-example library to understand the federal building blocks. For a move, compare the destination's own rules rather than carrying Wisconsin's subtraction across the border: Minnesota, Illinois and Michigan.

The downloads below preserve the checked sources and let you explore the two bounded illustrations. They are teaching tools, not tax-return preparation software or a recommendation to convert.