Moving from Canada to Mississippi: State Tax, Military, and Shipbuilding

Mississippi taxes income at a flat 4.4% rate for 2026, and the legislature has been cutting that rate on a fixed schedule with a stated goal of eliminating the income tax entirely over the coming years. The state’s economy runs on a mix that doesn’t show up in most relocation guides: military bases (Keesler Air Force Base in Biloxi, Camp Shelby near Hattiesburg, Stennis Space Center on the Gulf Coast), shipbuilding at Ingalls in Pascagoula, and automotive plants for Toyota in Blue Springs and Nissan in Canton. The federal cross-border rules, departure tax, RRSP and TFSA treatment, FBAR and FATCA, are the same regardless of destination. This page covers the Mississippi layer.

How does Mississippi’s flat tax compare to Canada?

Mississippi taxes all income above a small exempt threshold at a flat 4.4% for 2026, with no brackets above that. The rate has been falling on a legislated schedule for several years and is set to keep dropping, with lawmakers targeting full elimination if state revenue holds up.

Jurisdiction	Top rate	Notes
Ontario	~20.5% (with surtax)	On income above $220,000
BC	20.5%	On income above $252,752
Alberta	15%	On income above $355,845
Quebec	25.75%	On income above $126,000
Mississippi (2026)	4.4% flat	Phasing down toward 0%
Louisiana	3% flat	Neighboring Gulf state
Tennessee	0%	No state income tax

For a household earning $180,000 USD, Mississippi’s state tax runs around $7,900 before deductions, a fraction of what any Canadian province charges on comparable income, and it keeps shrinking each year the phase-down schedule holds.

What’s driving the phase-down toward zero?

Mississippi’s legislature has passed a series of rate cuts over the past several years, moving from a graduated system with a top rate of 5% down to the current flat 4.4%, with statutory triggers tied to revenue growth that step the rate down further in future years. The stated legislative goal, echoed repeatedly by state leadership, is to eliminate the income tax entirely and rely more heavily on sales tax and other revenue sources.

For a Canadian planning a multi-year move, this matters for timing: the rate you pay in your arrival year may already be lower than the rate quoted in older news coverage, and it’s worth checking the current-year rate rather than assuming a stale figure. For a W-2 employee, the practical math stays simple, Mississippi taxable income times the current flat rate, with no brackets to calculate.

How does Mississippi treat the RRSP?

Mississippi computes state taxable income starting from federal adjusted gross income. Because the RRSP treaty deferral under Article XVIII keeps the plan’s annual growth out of federal AGI, Mississippi doesn’t pick it up either. There’s no separate state-level tracking or add-back required.

When you eventually take a distribution from the RRSP, it lands in federal AGI and flows through to the Mississippi return at the flat rate. That’s a materially simpler outcome than states like California that tax RRSP growth annually regardless of the treaty election.

The TFSA is still a foreign trust problem no matter which state you land in, Form 3520/3520-A, potential PFIC exposure on the underlying holdings, and the usual mismatch between what CRA treats as tax-free and what the IRS doesn’t recognize as such. Mississippi doesn’t add a state complication on top of that, but it doesn’t remove the federal one either. The standard advice holds: close the TFSA before you leave Canada.

What draws Canadians to Mississippi’s job market?

Mississippi’s economy runs on a handful of large, concentrated employers rather than a broad professional services base, and that shapes who actually relocates there from Canada. The Gulf Coast carries three major federal installations, Keesler Air Force Base in Biloxi, Stennis Space Center near the Louisiana line, and Camp Shelby inland near Hattiesburg, which bring military personnel, contractors, and NASA/aerospace vendor staff, some of them Canadian, on postings and long-term assignments.

Ingalls Shipbuilding in Pascagoula is one of the largest employers in the state and builds Navy vessels, pulling in engineers and skilled trades, including Canadian welders and marine engineers with offshore or shipyard backgrounds. On the manufacturing side, Toyota’s plant in Blue Springs and Nissan’s plant in Canton anchor an automotive supply chain that draws production engineers and plant management, often as intra-company transfers from Canadian auto-sector employers. The Gulf Coast also has a growing energy and petrochemical presence tied into the broader Gulf refining and chemicals corridor that runs through Louisiana and Alabama.

What happens on the Canadian side when I leave?

The same departure sequence applies no matter which US state you’re headed to:

• Deemed disposition at fair market value of worldwide assets (with the usual exclusions for Canadian real property, pension plans, and certain other properties)
• 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 (treaty deferral applies), TFSA closed

What other taxes does Mississippi have?

Sales tax. Mississippi’s state sales tax rate is 7%, one of the higher state-only rates in the country. The upside is that Mississippi doesn’t allow the heavy local stacking you see in neighboring Louisiana or Alabama, so most cities and counties add little or nothing on top, and the combined rate in most of the state stays close to that 7% figure. Compare that to Ontario’s 13% HST on a broader base, versus a narrower Mississippi base at a lower combined rate in most areas.

Property tax. Mississippi’s effective property tax rate runs roughly 0.6% to 0.8% of market value, genuinely low by national standards. A $350,000 home on the Gulf Coast or in the Jackson metro might generate $2,100 to $2,800 in annual property tax, well below most Canadian municipalities and below the US national average.

Estate and inheritance tax. Mississippi has no state estate tax and no inheritance tax. The only estate tax exposure is the federal estate tax ($13.61 million exemption for US citizens and residents), simpler than states like Washington or New York.

How does Mississippi stack up against its neighbors?

Canadians weighing a Gulf South move often compare Mississippi against Alabama, Louisiana, and Tennessee, and the differences are meaningful enough to affect where an offer letter actually lands.

State	Income tax	Sales tax (state)	Notes
Mississippi	4.4% flat, phasing to 0%	7%	Low local sales tax stacking
Alabama	Graduated to 5%	4% (heavy local stacking)	Combined rates often 9%+
Louisiana	3% flat	4% (heavy local stacking)	Combined rates often 9-11%
Tennessee	0%	7% (with local stacking)	Combined rates often 9.5%+

Mississippi lands in the middle on income tax today, but it’s the only one of the four still actively cutting toward zero on a legislated schedule, and its lighter local sales tax stacking means the sticker sales tax rate is closer to what you actually pay at the register.

What should I do next?

The Canadian exit follows the standard departure checklist no matter the destination. On the Mississippi side, the main planning items are confirming the current-year flat rate (it keeps dropping), budgeting for the 7% sales tax on major purchases, and, for military and government contractor postings, whether the assignment is a permanent move or a shorter tour with different residency implications.

• Departure tax checklist, the full Canadian exit sequence
• US-Canada tax treaty explained, the framework behind the RRSP deferral
• RRSP and TFSA on a US move, federal treatment and reporting
• First US tax return after moving from Canada, the arrival-year mechanics
• State income tax for cross-border filers, comparing Mississippi to other states
• T1161 and T1243 departure forms, the property and asset filings
• Moving from Canada to Louisiana, the neighboring flat-tax Gulf state
• Moving from Canada to Tennessee, the no-income-tax neighbor to the north
• Moving from Canada to Georgia, the flat-tax state to the east
• Dual-status return or full-year election, the arrival-year filing choice

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