Connecticut to Arizona Retirement Taxes (2026): Every Tax That Changes

Updated July 27, 2026. Quick answer (2026): Moving from Connecticut to Arizona in retirement, the top rate on withdrawals falls from 6.99% to 2.5%, and you leave a Connecticut death tax behind. Four separate taxes change when you move — state income tax on withdrawals, state estate tax, state inheritance tax, and what probate costs your heirs. Most comparisons only price the first one.

Connecticut vs Arizona: every tax that changes

Every cell is quoted from our statute-cited 51-jurisdiction dataset. Download the full dataset as CSV.

1. What changes on your annual tax bill

Both states tax retirement withdrawals, so this is a rate change rather than an exemption. Connecticut runs graduated to 6.99% (6 brackets, 2%-6.99%) against Arizona at flat 2.5% — a top-rate difference of roughly 4.49 percentage points. On $100,000 of withdrawals that is on the order of $4,490 a year at the top of the schedule, before any exclusion either state allows.

Connecticut: Pension/annuity income: 100% deduction below the same $75,000/$100,000 AGI thresholds; Arizona: Private pensions, 401(k), and IRA distributions fully taxable at 2.5%.

2. What changes at death: state estate tax

This is usually the larger number. Connecticut levies an estate tax — yes – 2026 exemption $15,000,000 (statutorily tied to the federal basic exclusion amount); flat 12% rate on the excess; total tax capped at $15M; CT also levies the only state gift tax (unified with estate) — and Arizona levies none (none). Establishing domicile in Arizona removes that exposure for assets that are not Connecticut real property.

3. What changes at death: state inheritance tax

Neither state levies an inheritance tax. Connecticut: none Arizona: none

4. The one nobody prices: what probate costs your heirs

Connecticut uses a reasonable-fee fee model (Fiduciary and attorney compensation is a ‘reasonable compensation’ standard (case law: Hayward v. Plant factors); no statutory percentage for compensation. BUT Connecticut’s probate COURT fees are statutory and percentage-based on the gross estate (C.G.S. §45a-107) — a distinctive cost driver, e.g., $1,865 + 0.25% of the amount over $500,000; capped at $40,000 (deaths on/after July 1, 2016); ~50% reduction when the spouse is sole beneficiary.); Arizona uses a reasonable-fee model (UPC state: reasonable compensation for PR and attorneys (A.R.S. §14-3719); no percentage schedule.). Filing fees — Connecticut: No flat filing fee model — the value-based estate fee under C.G.S. §45a-107 functions as the court cost (see fee_basis); Connecticut Probate Courts publish an official calculator at ctprobate.gov Arizona: ~$306 initial probate filing (Maricopa County Clerk of Superior Court); varies modestly by county

Full detail: probate cost by state and small-estate limits by state.

Will Connecticut still tax me after I move to Arizona?

Not on your retirement withdrawals, once you genuinely change domicile — but that is a harder test than a change of address, and what you leave behind stays in reach.

• Domicile is a test, not a mailing address. A departing state can and does audit residency. Days present, voter registration, driver’s licence, where your doctors and advisers are, and where you keep what you value all count.
• Real property left behind stays taxable. Keeping a home in Connecticut can keep part of the estate within reach of Connecticut rules even after you become an Arizona resident.
• A Roth conversion is taxed where you live in the year you convert. Sequencing a conversion after establishing the new domicile is often worth more than the annual saving — see how all 51 jurisdictions tax Roth conversions.

If you keep a home in Connecticut, what happens at death?

Changing domicile moves you. It does not move the house. Connecticut levies an estate tax, and it reaches a nonresident decedent’s real property situated there — so a home kept behind after the move stays within Connecticut’s reach even once Arizona is your legal home for every other purpose. A nonresident estate is one whose decedent was not domiciled in Connecticut but owned real or tangible personal property in Connecticut. Connecticut taxes transfers of Connecticut-situs real and tangible property.

If tax is due, file CT-706/709 with DRS. If no tax is due but clearance is needed, file CT-706 NT with the Probate Court for the district where the property sits. The practical consequence is the part most summaries skip: a filing can be required for clearance even when no Connecticut tax is due. Authority: Form CT-706/709 and CT-706 NT instructions.

This is the exposure that survives a move, and it is the one worth pricing before the move rather than after. The house also stays within that state’s probate jurisdiction, so the estate faces a separate ancillary proceeding there on top of the probate where you live — the ancillary probate calculator prices that second proceeding. Confirm the current figures with the state revenue department or a licensed professional before acting — thresholds move, and the arithmetic depends on the whole estate, not just the house.

Full state detail

Every figure above is summarized. The complete statute-cited breakdown for each state: Connecticut retirement taxes and Arizona retirement taxes. To compare any other pair, start at the retirement tax relocation hub.

Talking this through

Relocation timing, Roth conversion sequencing and estate exposure interact, and the order you do them in changes the total. If you want a second opinion, understand what it should cost first — see our advisor cost guide. If a move is genuinely on the table, here is what to look for in an advisor who knows both Connecticut and Arizona.

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Primary sources

• CGS § 12-701(a)(20)
• CT DRS 2024 CT-1040 instructions
• CGA OLR Report 2024-R-0130
• Conn. Gen. Stat. sec. 12-391(g)
• A.R.S. § 43-1022
• AZDOR: Identifying Other Taxable Income / Military Tax Filing
• Conn. Gen. Stat. §45a-107
• Conn. Gen. Stat. §45a-273
• Ariz. Rev. Stat. §14-3719
• Ariz. Rev. Stat. §14-3971 (HB 2116, 2025)

Methodology: every figure is quoted from Clear Money Guide’s statute-cited 51-jurisdiction datasets, compiled from state statutes, session laws and revenue-department publications and adversarially verified in July 2026. Nothing here is personalized tax or legal advice. Confirm your own facts with a qualified adviser before you move.