The Port Huron guide
Port Huron city income tax, explained
Port Huron — the border city at the Blue Water Bridge — charges 1% to residents and 0.5% to non-residents who work there. This calculator applies Port Huron’s exact rate on top of Michigan’s flat 4.25%.
Port Huron’s rate: 1% resident, 0.5% non-resident
Port Huron levies 1% on residents and 0.5% on non-residents who earn wages in the city. It’s the standard Michigan 1% structure, applied to wages, salaries and self-employment income, with Social Security excluded. The tax has been a fixture of Port Huron’s budget for decades, funding the city’s general operations along the riverfront.
The border-city workforce
Port Huron’s employment base spans the border-trade logistics around the Blue Water Bridge, a regional hospital system, manufacturing, and the retail and service economy that serves the area and cross-border traffic. Residents pay the full 1%. Commuters from Fort Gratiot, Marysville, Kimball and the surrounding townships pay 0.5% on their Port Huron wages.
What $45,000 looks like in Port Huron
At $45,000, single, one exemption, a Port Huron resident pays about $450 a year at 1%, on top of roughly $1,913 to the state. A non-resident commuter pays about $225. In biweekly terms that’s about $17 (resident) or $9 (commuter) per check. Modest — but it’s the exact line this calculator surfaces.
Withholding and filing
Employers with Port Huron workers withhold the tax as a stub line. Wage earners rarely file. Self-employed residents pay quarterly, and annual returns follow the state spring calendar. The city’s finance office administers the tax.
The St. Clair County comparison
Fort Gratiot and Marysville — Port Huron’s biggest neighbors — have no city income tax. A worker who lives in Fort Gratiot and commutes to Port Huron pays the 0.5% non-resident rate; a Port Huron resident pays the full 1%. The calculator’s residency toggle shows the exact annual difference.
Hourly work and overtime in Port Huron
Port Huron’s employment base — logistics around the Blue Water Bridge, healthcare at McLaren, manufacturing and distribution — employs a large hourly workforce, and the city tax applies to every shift and overtime dollar at the flat 1% (or 0.5% non-resident). A warehouse worker at $24/hour with ten weekly overtime hours sees roughly $6.20 a week go to the city on the OT alone. The hourly and overtime modes apply the rate automatically.
Self-employment in Port Huron
Self-employed Port Huron residents owe the 1% on net profit, paid quarterly with state and federal estimates. A trades contractor clearing $50,000 net owes about $500 a year to the city. Independent contractors based outside the city who work inside it owe the 0.5% non-resident rate on in-city earnings. The self-employment mode includes the city rate in the annual total.
A real check, broken down
Here is what one biweekly check looks like for a Port Huron resident at $48,000, single, no pre-tax deductions: gross $1,846, federal about $151, FICA about $141, Michigan about $65, Port Huron about $18. That nets roughly $1,471 per check, or about $38,250 a year. A commuter from Fort Gratiot pays about $9 per check instead of $18 — half the line, as the residency toggle shows.
Retirees in Port Huron
For retirees living in Port Huron, Social Security is excluded from the city income tax. Pension income follows the retirement phase-in by birth year: workers born after 1945 see up to $67,610 of retirement income excluded in 2026. A retired Port Huron resident with only Social Security and a modest pension often owes very little to the city. The calculator applies the same exclusion logic.
The border and the bridge
The Blue Water Bridge connects Port Huron to Sarnia, and cross-border workers raise the occasional question: do Canadian-earned wages owe Port Huron city tax? For U.S. residents who work in Canada, the sourcing depends on where the work is physically performed — Port Huron taxes wages earned within the city, not worldwide income of its residents in the way some states do. This calculator models U.S.-side withholding; if you split time across the border, work with a tax professional on the cross-border treatment.
What to watch in the next tax year
Port Huron’s 1%/0.5% structure is long-settled and no rate change is on the books for 2026. What does move each year is the federal standard deduction and brackets, Michigan’s exemption amount, and the Social Security wage base — all read from the current MI-2026 data file. Re-run the page after the new year to pick up the refreshed figures.
Who should use this calculator, and how
This tool is for anyone who lives or works in Port Huron: residents who want the true net on their pay, commuters from Fort Gratiot, Marysville or the townships, self-employed residents building quarterly estimates, and job candidates comparing a Port Huron offer against one in the non-taxing townships. Enter your gross, frequency, filing status, exemptions and pre-tax amounts; the calculator returns the exact net per period with the Port Huron line shown separately from state and federal. Toggle residency to see the half-rate commuter case, or switch to Fort Gratiot or Marysville to price the no-tax side of the county line.
How Port Huron fits the state picture
Port Huron is one of 24 Michigan cities with a wage tax and the easternmost taxing city in the state. Its 1%/0.5% split is the most common structure in Michigan — the same shape used by Lansing, Jackson, Pontiac and a dozen others. What makes it distinctive is its position at the border, where the Blue Water Bridge connects to Sarnia and the city’s logistics and manufacturing economy serves cross-border traffic. For most workers the calculus is simple: the city line is 1% or 0.5% of taxable wages, and the surrounding townships add nothing.
How to check your withholding is right
After your first paycheck, check the stub for a line labeled for Port Huron. If the line is missing and you live or work in the city, ask payroll to set up city withholding. If it’s there, compare against this calculator’s city line: it should match your gross, reduced by pre-tax deductions, times 1% (resident) or 0.5% (commuter). A small variance is normal around the exemption; a systematic difference is worth a call to the city’s finance office.
Three Port Huron scenarios
A $48,000 resident nets about $38,250 a year with the 1% line; a $45,000 non-resident commuting from Fort Gratiot pays 0.5% on Port Huron wages, about $225 a year; and a $48,000 resident with a 6% 401(k) plus health insurance sees the city line shrink with the pre-tax base. Run all three through the calculator and each comes back with a different per-check number, which is exactly the point of a city-tax tool.
The full withholding stack in Port Huron
A Port Huron resident’s check comes out in four visible layers: federal progressive tax after the standard deduction; FICA at 6.2% and 1.45%; Michigan’s flat 4.25% on the state taxable base after the $5,900 exemption; and Port Huron’s 1% on the city base. Pre-tax 401(k) and health contributions reduce the federal, state and city lines together, while FICA is computed on wages net of health only. The calculator reproduces that ordering exactly, so the per-check figure matches a real stub within a few dollars.
How the calculator handles Port Huron exactly
Set city to Port Huron and residency to resident (or non-resident). Enter your gross, frequency, filing status, exemptions and pre-tax amounts. The tool applies Port Huron’s 1% (or 0.5%), Michigan’s 4.25%, FICA and federal brackets, and returns the exact net per period. Toggle to Fort Gratiot or Marysville to see the same salary priced across the county line in seconds.
Port Huron in the metro-Detroit orbit
Although Port Huron is 60 miles from downtown Detroit, the corridor along I-94 connects it to the metro economy, and a share of residents commute west toward the more populated counties. Because the taxing cities in that direction — like Detroit at 2.4% — charge more, a Port Huron worker who takes a job in the city itself sees the lowest possible city line available in the region. That makes the city’s own jobs attractive on take-home, and it’s exactly the kind of comparison the calculator makes concrete.
Border-city payroll can get complicated if you work on both sides of the bridge. For wages earned in Michigan, Port Huron’s city line applies normally — the calculator models the US-side withholding.