Roth Conversion in Arizona

A Roth conversion in Arizona is taxed by the state as ordinary income at a flat 2.5% rate for 2026, the single rate Arizona applies to every dollar of taxable income regardless of amount (Source: Tax Foundation, 2026 Arizona Tax Rates & Rankings). That flat structure changes how large a conversion an Arizona resident can run in one year without state-level penalty.

How a Roth conversion is taxed in Arizona

Arizona taxes a Roth conversion at its flat 2.5% rate for 2026. The IRS treats the converted amount as ordinary income, it lands in your federal adjusted gross income, and Arizona starts its own calculation from that federal figure. None of Arizona’s retirement subtractions reach conversion income, so the full amount is taxed at 2.5% (Source: A.R.S. 43-1022; Tax Foundation 2026).

Arizona conforms to federal adjusted gross income, so a conversion cannot be sidestepped at the state level once it is federally taxable. The state offers no Roth-specific exclusion, no lower retirement rate, and no age-based break on this income. The conversion is not Social Security, not military pay, and not a qualifying government pension, so the subtractions in A.R.S. 43-1022 do not reach it (Source: A.R.S. 43-1022, azleg.gov).

Two tax systems split the work. The federal bill, at ordinary rates up to 37% for 2026, is the large number and the one worth managing. Arizona’s 2.5% is comparatively minor and, because it is flat, predictable. For sizing a conversion against the federal brackets, see our guide on how much to convert to Roth and the parent Roth conversion service overview.

Roth conversion tax rate Arizona: the flat 2.5% math

Because Arizona’s rate is a single flat 2.5% for 2026, state tax on a conversion rises in a straight line with the amount converted. There is no graduated schedule and no state bracket to creep into, so converting $500,000 costs the same 2.5% per dollar as converting $50,000 (Source: Tax Foundation 2026). The table below is illustrative and shows Arizona state tax only.

Amount converted in 2026	Arizona state tax at flat 2.5%	Effective Arizona rate
$50,000	$1,250	2.5%
$100,000	$2,500	2.5%
$250,000	$6,250	2.5%
$500,000	$12,500	2.5%

Illustrative only; assumes an Arizona resident, no offsetting subtractions on the conversion income, and the 2026 flat rate of 2.5% (Source: Tax Foundation 2026). Federal tax is not shown and is far larger.

This flat structure is an Arizona-specific point that is easy to overlook and worth understanding when sizing a conversion. In a graduated state, stacking a large conversion on other income can push each added dollar into a higher state bracket, so the state itself penalizes converting a big balance in one year. Arizona imposes no such penalty. The only bracket management that changes your bill is federal, the focus of our Roth conversion break-even analysis and state-by-state Roth conversion tax comparison. IRMAA Medicare surcharges, the Net Investment Income Tax, and ACA credit thresholds are also federal, not Arizona; see 2026 Medicare IRMAA brackets.

Does Arizona tax 401(k) and IRA withdrawals?

Yes. Arizona taxes ordinary distributions from traditional 401(k)s, 403(b)s, and traditional IRAs at the flat 2.5% for 2026, because those withdrawals enter Arizona income through federal adjusted gross income (Source: A.R.S. 43-1022). Arizona has no blanket exemption for private retirement-plan distributions, unlike a handful of states such as Pennsylvania or Illinois that shield qualified-plan withdrawals after retirement age.

The one narrow break is a subtraction of up to $2,500 per taxpayer for pensions from the U.S. government civil-service system, the Arizona State Retirement System, Arizona political-subdivision plans, and certain other federally established retirement systems (Source: A.R.S. 43-1022). That subtraction does not extend to private-employer IRA or 401(k) money, and it does not apply to government pensions from other states. For most retirees, a 401(k) or IRA withdrawal in Arizona is taxed in full at 2.5%.

Does Arizona tax Social Security?

No. Arizona fully exempts Social Security benefits from state income tax. A.R.S. 43-1022 allows a subtraction for the Social Security and Tier 1 Railroad Retirement benefits included in your federal adjusted gross income under IRC section 86, which removes all federally taxed Social Security from the Arizona base (Source: A.R.S. 43-1022, azleg.gov). This holds at every income level, with no phase-out.

Two clarifications matter for conversion planning. First, the exemption covers Social Security only; it does not shield the conversion, which remains fully taxable at 2.5%. Second, a large conversion can still raise the share of your Social Security that becomes taxable at the federal level, because federal provisional-income rules count conversion income. Arizona subtracts that federally taxed Social Security back out, but the federal effect stands. Our overview of the taxation of Social Security benefits in 2026 covers that interaction.

Does Arizona tax pension income? Military exemption and the $2,500 subtraction

Arizona’s answer depends on the pension type. Military and uniformed-services retirement pay is fully excluded from Arizona income at 100% for tax years after December 31, 2020 (Source: A.R.S. 43-1022, azleg.gov). Qualifying government pensions get a subtraction of up to $2,500 per taxpayer. Private pensions and annuities receive no Arizona subtraction and are taxed in full at the flat 2.5% (Source: A.R.S. 43-1022).

The three-way split is worth memorizing:

• Military and uniformed-services retired or retainer pay: the full amount is excluded from Arizona income (Source: A.R.S. 43-1022).
• U.S. federal civil-service and Arizona state or local government pensions: subtraction of up to $2,500 per year, per taxpayer, with no age or income condition. Out-of-state government pensions do not qualify (Source: A.R.S. 43-1022).
• Private-employer pensions, annuities, IRAs, and 401(k)s: no Arizona subtraction; fully taxable at 2.5%.

None of these subtractions apply to a Roth conversion, even for a retired veteran or civil servant, because the conversion is not pension or retirement pay under the statute. The exempt income and the conversion are taxed on separate footing.

Does Arizona have an estate tax in 2026?

No. Arizona has no state estate tax and no inheritance tax for 2026. The state’s pickup estate tax lapsed when the federal state death tax credit fully phased out effective 2005 and was formally repealed in 2006, and Title 14 contains no death-tax chapter, so there is no state exemption threshold or rate to plan around (Source: Tax Foundation 2026, taxfoundation.org/location/arizona). Only the federal estate tax can reach an Arizona resident’s estate.

For 2026, the federal estate tax exemption is $15 million per individual with a 40% top rate, a federal figure that does not change by state (see our 2026 estate tax exemption explainer). The absence of an Arizona death tax is relevant to conversion planning because a Roth account passes to heirs income-tax-free at the federal level and carries no separate Arizona estate or inheritance cost, one reason some Arizona families weigh conversions as part of a legacy plan rather than a spending plan.

Is Arizona tax friendly for retirees?

Arizona pairs a low flat 2.5% income tax with no tax on Social Security, no estate tax, and no inheritance tax, which retiree-focused aggregators consistently rank as favorable. The offsets are a 5.6% state sales tax rate that averages 8.52% once local rates are added and property tax, which sits low at an effective rate of 0.48% on owner-occupied housing (Source: Tax Foundation, 2026 Arizona Tax Rates & Rankings).

One program stands out. The Senior Property Valuation Protection Option, known as the senior freeze, lets qualifying homeowners age 65 and older lock the limited property value used to calculate their tax, subject to residency and income limits set by the county assessor (Source: Arizona Department of Revenue; A.R.S. 42-17301 to 42-17313). It addresses property tax, not income tax, so it does not reduce the 2.5% owed on a conversion. Retirees relocating for tax reasons may want our note on moving to a tax-friendly state in retirement.

Roth conversion before moving to Arizona: residency and timing

A Roth conversion is taxed by your state of legal residence in the conversion year, not the state where the IRA is held. Federal law at 4 U.S.C. 114 bars a state from taxing the retirement income of a non-resident, so the state that gets to tax the conversion is wherever you are domiciled that year (Source: 4 U.S.C. 114; A.R.S. 43-104).

Arizona taxes the worldwide income of its residents. You are an Arizona resident if you are domiciled in Arizona or spend more than nine months of the tax year in the state, a statutory presumption under A.R.S. 43-104 (Source: A.R.S. 43-104, azleg.gov). Timing can therefore change the state bill in two directions:

• A retiree relocating from a high-income-tax state, such as California at a top rate of 13.3%, would face that state’s higher rate on a conversion completed while still domiciled there, versus Arizona’s flat 2.5% once Arizona residency is established.
• A retiree who abandons Arizona domicile and establishes residency in a no-income-tax state such as Nevada, Texas, or Florida before converting would owe no Arizona tax on that conversion at all.

Part-year and split-year situations turn on when domicile actually changed and require the Arizona Form 140PY part-year apportionment rules, so confirm the facts with a qualified advisor before acting. This is a factual description of how the residency rules operate, not a recommendation to move.

How Rothology plans a Roth conversion for Arizona residents

Q3 Advisors offers Rothology Premier Roth Conversion, a flat-fee, fiduciary planning service. For an Arizona resident, the work models the conversion against both tax systems: Arizona’s flat 2.5% at the state level and the federal ordinary-income brackets, IRMAA surcharges, and other federal thresholds where the real bracket management happens. The firm sells no financial products and earns no commissions.

A typical engagement builds a multi-year conversion plan with year-by-year tax projections and documents the assumptions so you can see the numbers. Because Arizona’s rate is flat, the plan can size a single-year conversion without a state bracket-creep penalty and concentrate on federal factors and your own cash-flow and legacy goals. The conversation is educational first. To review your situation, start with the Roth conversion service page or schedule a call.

Frequently asked questions

Does Arizona tax Roth conversions?

Yes. Arizona taxes a Roth conversion as ordinary income at its flat 2.5% rate for 2026. The converted amount enters Arizona income through your federal adjusted gross income, and no state exclusion, subtraction, or preferential rate applies to it (Source: A.R.S. 43-1022; Tax Foundation 2026). The conversion is taxed on top of the federal bill, which is the larger cost.

How much tax will I pay on a Roth conversion in Arizona?

Arizona state tax equals 2.5% of the converted amount for 2026, so a $100,000 conversion produces about $2,500 in Arizona tax and a $250,000 conversion about $6,250 (Source: Tax Foundation 2026). These figures are illustrative and exclude the federal tax, which is taxed at ordinary rates up to 37% and is far larger than the state amount.

Does Arizona tax Social Security benefits?

No. Arizona fully exempts Social Security benefits from state income tax at every income level under A.R.S. 43-1022, which subtracts the federally taxed portion back out of Arizona income (Source: A.R.S. 43-1022). The exemption covers Social Security only and does not reduce the 2.5% Arizona tax owed on a Roth conversion or on 401(k) and IRA withdrawals.

Does Arizona tax 401(k) and IRA withdrawals?

Yes. Arizona taxes traditional 401(k), 403(b), and traditional IRA distributions at the flat 2.5% for 2026, because they flow in through federal adjusted gross income (Source: A.R.S. 43-1022). There is no blanket exemption for private retirement-plan withdrawals. Only qualifying U.S. government and Arizona government pensions get a limited subtraction of up to $2,500 per taxpayer.

What is the Arizona flat income tax rate for 2026?

Arizona’s individual income tax is a single flat rate of 2.5% for 2026, applied at every income level with no brackets (Source: Tax Foundation, 2026 Arizona Tax Rates & Rankings). The flat rate has been in effect since 2023 after the phase-out of the prior graduated schedule under 2021 legislation. No Arizona city or county adds a local income tax on top.

Does Arizona have an estate or inheritance tax?

No. Arizona levies neither a state estate tax nor an inheritance tax for 2026; the state’s pickup estate tax lapsed when the federal state death tax credit fully phased out effective 2005 and was formally repealed in 2006 (Source: Tax Foundation 2026). Only the federal estate tax, with a 2026 exemption of $15 million per individual, can reach an Arizona resident’s estate. A Roth account also passes to heirs income-tax-free at the federal level.

Should I do a Roth conversion before or after moving to Arizona?

A conversion is taxed by your state of legal residence in the conversion year under 4 U.S.C. 114 (Source: A.R.S. 43-104). A retiree moving from a higher-tax state would face that state’s rate if converting before establishing Arizona residency, versus Arizona’s flat 2.5% after. This is how the rules operate; confirm your domicile facts with an advisor before acting.

Sources

• Arizona Revised Statutes 43-1022, Subtractions from Arizona gross income (Social Security, pension, and military provisions), azleg.gov/ars/43/01022.htm.
• Arizona Revised Statutes 43-104, definition of resident and the nine-month presumption, azleg.gov.
• Arizona Department of Revenue, Individual Income Tax Information and Form 140 and Form 140PY instructions, azdor.gov.
• Tax Foundation, 2026 Arizona Tax Rates & Rankings (flat 2.5% rate; no estate or inheritance tax; 8.52% average combined sales tax; 0.48% effective property tax), taxfoundation.org/location/arizona.
• Arizona Department of Revenue, Senior Property Valuation Protection Option and A.R.S. 42-17301 to 42-17313.
• 4 U.S.C. 114, federal bar on state taxation of a non-resident’s retirement income.