Bookkeeping, Tax Preparation Support and Virtual CFO Services for Detroit Businesses

Michigan's Corporate Income Tax is a flat 6% on C corporations and on businesses taxed as corporations for federal purposes. A small business alternative credit offers an alternate rate of 1.8% of adjusted business income for those who qualify (Michigan Treasury, checked October 8, 2026).

Detroit stacks its own tax on top. The city rate is 2.00% for corporations. Partnership income is taxed by partner: 2.40% for resident partners, 1.20% for nonresident partners and 2.00% for partners that are corporations. Estates and trusts pay 1.2%. The Michigan Department of Treasury processes Detroit's returns and payments, so a business already registered for Michigan taxes needs no separate city registration and files using its federal employer identification number.

The annual city return is due on the 15th day of the 4th month after the year ends. Calendar-year estimates are due April 15, June 15, September 15 and January 15. The ledger has to carry two income tax provisions, state and city, with separate payments and separate dates.

Employers withhold Detroit income tax from W-2 wages: 2.4% for residents of the city and 1.2% for nonresidents, according to the city's business income tax page. Independent contractors paid on a 1099 aren't withheld from, which makes worker classification a tax issue as well as a payroll one.

Michigan Treasury lists 24 cities that levy a city income tax. Detroit is the one Treasury administers. Hamtramck, Highland Park and Pontiac run their own forms, filings and payments, so a business with a location or employees in one of them files with that city directly. A firm with a shop in Hamtramck and an office in Detroit has two separate city obligations, even though the buildings are a short drive apart.

Michigan's sales tax is 6%, and the state doesn't allow cities or other local units to add sales or use tax, so there is one rate whether a sale happens in Detroit, Dearborn or Troy. Residential electricity, natural gas and home heating fuel are taxed at 4%. The sales tax license is valid from January 1 through December 31 (Michigan Treasury, checked October 8, 2026).

The part that takes bookkeeping effort is the use tax. A 6% use tax applies to taxable items brought into Michigan or bought from out-of-state sellers that don't collect Michigan tax, with a credit for tax paid to another state. Equipment, tooling and software bought from outside the state are typical cases for manufacturers, and a purchase ledger that flags out-of-state vendors is what keeps the use tax return honest.

Michigan's minimum wage is $13.73 an hour from January 1, 2026 and rises to $15.00 on January 1, 2027 under Senate Bill 8, per the state labor department. The Earned Sick Time Act took effect February 21, 2025. Employees accrue at least one hour of paid sick time for every 30 hours worked. Employers with 11 or more employees can cap use at 72 hours a year. A small business, defined as 10 or fewer employees, can cap it at 40 hours.

For the books, accrued sick time is a liability that grows with hours worked, so payroll software has to calculate it and the ledger has to record it each period instead of at year end. Employers close to the 11-employee line should also track headcount over time, because the status changes once an employer has 11 or more for 20 or more workweeks.

Automotive suppliers and tooling shops need cost accounting that separates tooling the customer owns from tooling the supplier capitalizes, plus a plan for annual price reductions negotiated with vehicle makers. Inventory in several stages, returnable packaging and customer-owned material all complicate the balance sheet.

Mobility and electric vehicle start-ups spend heavily on research before revenue, and section 174A lets taxpayers deduct domestic research costs for taxable years beginning after December 31, 2024 (IRS Revenue Procedure 2025-28), so project-level tagging matters. Hospitals, clinics and dental groups separate patient receivables from insurer timing. Construction and redevelopment firms need job costing and retainage tracking. Freight and cross-border operators track per-load costs and fuel, and may handle payments in two currencies.

Finbryn serves Metro Detroit from one remote team. The city a business sits in decides whether a city income tax applies. The table lists the places this page covers, and Treasury's list of 24 income-tax cities governs the last column.

Michigan's own taxes apply everywhere in the table. Employees often live in one city and work in another, so withholding depends on both addresses.

Federal dates come from IRS Publication 509. A new LLC formed after September 30 skips the February 15 statement that follows, because its first one falls a year later.

The Bureau of Labor Statistics' May 2025 estimates count 14,730 jobs in the bookkeeping, accounting and auditing clerk group (occupation code 43-3031) in the Detroit-Warren-Dearborn metro, at a mean annual wage of $53,540 and a median of $51,480. Accountants and auditors number 19,390 jobs at a mean of $91,310. Financial managers, the closest group to a controller or part-time CFO, number 11,670 jobs at a mean of $168,730, and the metro's concentration of that occupation is 1.13 times the national average.

Add payroll tax, benefits, software and the cost of finding someone, and the wage line understates the real cost. A Finbryn plan is a fixed monthly fee that works remotely. If your shop floor needs a person in the building handling paper and phone calls, hire that person and use a plan for the books behind them.

Documents travel through a secure client portal, and bank and card feeds connect into QuickBooks Online or Xero. The file stays in your name, and there's no Detroit office to visit.

Essentials is $249 a month for up to $50,000 in monthly expenses; Growth is $549 a month up to $150,000. The pricing page lists the other plans. Tax work is preparation support: schedules and workpapers are prepared for review and signature by the credentialed preparer, who signs and files the return, and the about page names the people. Start on the contact page, tell us which of these layers apply, and send recent statements. You'll get a reconciled first close with an open-items list. For another Midwest metro, see Chicago, or browse the locations hub.