Moving from Canada to Iowa: Flat 3.9% Tax and the Des Moines Insurance Corridor

By Yarik Yarosh, CPA ·August 30, 2026 ·6 min read

Written by Yarik Yarosh, CPA (US & Canada) August 30, 2026 · FL CPA license AC61704 · CPA Ontario

Iowa finished phasing in a flat 3.9% income tax in 2026, replacing the old graduated system that ran as high as 8.53%. No city or county adds its own income tax on top, so the state rate is the whole story. The Canadian corridor here runs mostly through Des Moines, home to Principal Financial Group and a growing cluster of insurance and fintech employers, plus Cedar Rapids (Collins Aerospace) and Iowa City (University of Iowa). It’s a quieter move than Toronto to New York or Vancouver to Seattle, but the tax math is genuinely favorable, and the federal cross-border obligations are identical to any other province-to-state move.

✓Key takeaway

Iowa’s flat 3.9% rate applies to all taxable income, with no local income tax anywhere in the state. Iowa starts from federal adjusted gross income, so the RRSP treaty deferral carries through automatically, and Social Security is fully exempt. Property taxes run higher than the income tax burden for most homeowners, roughly 1.3% to 1.6% effective. Iowa repealed both its inheritance tax and its estate-adjacent filing requirement effective 2025. The Canadian departure tax sequence applies regardless of destination.

How does Iowa’s flat tax compare to Canada?

Iowa’s 3.9% sits well below every Canadian province’s top marginal rate, and below most provinces’ bottom bracket too.

Jurisdiction	Top rate	Notes
Ontario	~20.5% (with surtax)	On income above $220,000
Alberta	15%	On income above $355,845
Quebec	25.75%	On income above $126,000
Minnesota	9.85%	Nearby Midwest comparison
Illinois	4.95% flat	Nearby comparison
Iowa	3.9% flat	All taxable income

On $180,000 of employment income, Iowa’s state tax comes to about $7,020. The same income taxed under Ontario’s provincial brackets would run closer to $13,000 to $15,000 CAD. Compared to neighboring Illinois at 4.95%, Iowa saves roughly $1,900 a year at this income level, and considerably more against Minnesota, where the top rate hits 9.85%.

How does Iowa tax the RRSP?

Iowa starts its return from federal AGI. The RRSP treaty deferral under Article XVIII keeps unrealized RRSP growth out of federal AGI, so nothing flows through to Iowa during the deferral period. When distributions eventually happen, they hit federal AGI and get taxed by Iowa at the flat 3.9%, the same rate as every other type of income.

Iowa also exempts Social Security benefits entirely from state tax, and offers a retirement income exclusion for pension and retirement account distributions once the taxpayer reaches the qualifying age. Whether an RRSP/RRIF distribution qualifies for that exclusion depends on how it’s characterized on the federal return, which is worth confirming before assuming the benefit applies. TFSA income is federally taxable and flows through at the flat rate with no special exclusion, reinforcing the standard advice to close the TFSA before leaving Canada.

Iowa’s income tax rate is low, but property tax is where the state makes up ground. Effective rates typically run 1.3% to 1.6% of assessed value, among the higher rates in the Midwest and well above the 0.6% to 1.2% most Ontario homeowners are used to. On a $400,000 home in the Des Moines suburbs, that’s roughly $5,200 to $6,400 a year in property tax, more than the income tax bill for many households at this income level.

Sales tax is 6% at the state level, with most localities layering on a 1% local option tax for a combined 7% in Des Moines, Cedar Rapids, and most of the state’s population centers. Social Security is fully exempt from Iowa income tax regardless of age or income, which matters for anyone thinking ahead to retirement in the state.

What happens on the Canadian side when I leave?

The standard departure sequence doesn’t change based on which state you land in:

Deemed disposition at fair market value of worldwide assets
Final Canadian return from January 1 to the departure date
Provincial tax at the rates of your province of residence on departure day
T1161 and T1243 if applicable
CRA non-resident notification
RRSP left open, TFSA closed before departure

Hypothetical example

Invented numbers. An insurance underwriter moves from Toronto to Des Moines in September 2026 for a role at Principal Financial, at $150,000 USD. The Ontario final return covers January to August: roughly $95,000 CAD of employment income, plus departure tax on $60,000 CAD in unrealized brokerage gains. On the Iowa side, a part-year return covers September to December, with roughly $50,000 USD of Iowa-source income taxed at the flat 3.9%, producing about $1,950 in state tax. No local income tax layer. Compare that to the same move landing in Minneapolis, where Minnesota’s top bracket would push the state tax on comparable income well into five figures once the underwriter is earning at this level full-year. The flat rate and the absence of any city tax make Iowa one of the lighter state-tax landings in the Midwest.

Illustrative numbers only, not a real client and not advice for your facts.

Why is Des Moines a cross-border corridor at all?

Des Moines has quietly built one of the country’s densest insurance and financial services clusters outside New York and Hartford, anchored by Principal Financial Group and a growing insurtech and fintech scene around it. Cedar Rapids pulls in engineering and aerospace talent through Collins Aerospace, and Iowa City draws academic and healthcare hires through the University of Iowa. None of these are high-profile relocation destinations the way Austin or Miami are, but for someone with an offer in hand, the tax picture is unusually clean: low flat rate, no city tax, and a straightforward federal-conformity structure that makes planning easier than in states with their own quirky add-back rules.

Does Iowa tax estates or inheritances?

No. Iowa repealed its inheritance tax and its companion estate-related filing requirement, both effective for deaths in 2025 and after. Combined with no state estate tax, this makes Iowa cleaner than Illinois (a $4 million estate tax exemption) for anyone bringing meaningful cross-border assets into the state. The federal estate tax exemption ($13.61 million) is still the relevant ceiling, and cross-border wills still need the right structure.

What should I do first?

Run the Canadian exit through the standard departure checklist first, since that sequence doesn’t change based on the destination state. On the Iowa side, the planning priorities are the property tax line (which often exceeds the income tax bill), confirming how any RRSP/RRIF distribution gets characterized for the retirement income exclusion, and the arrival-year part-year return.

Departure tax checklist, the full Canadian exit sequence
US-Canada tax treaty explained, how Article XVIII protects the RRSP
RRSP and TFSA on a US move, federal treatment and reporting
First US tax return after moving from Canada, arrival-year mechanics
State income tax for cross-border filers, how Iowa compares
Departure tax filings, T1161 and T1243
Moving from Canada to Illinois, the nearby flat-tax corridor
Moving from Canada to Minnesota, the higher-tax Midwest comparison
Moving from Canada to Wisconsin, another neighboring corridor
Moving from Canada to Kansas, the graduated-rate neighbor to the south
Moving from Canada to Nebraska, the graduated-rate neighbor to the west
Moving from BC to California, a high-tax contrast for perspective

Planning a move to Des Moines or Iowa?

The Cross-Border Assessment is a fixed $250. You get a written, CPA-reviewed plan covering your departure tax exposure, the Iowa filing, RRSP/TFSA treatment, and FBAR/FATCA reporting.

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Cite this page

Yarik Yarosh, CPA. "Moving from Canada to Iowa: Flat 3.9% Tax and the Des Moines Insurance Corridor." Blue Cloud CPA, August 30, 2026. https://bluecloudcpa.com/guides/moving-from-canada-to-iowa-taxes

This guide is general information, not tax advice for your specific situation. Which points apply, and how, depends on your facts.