Michigan's legal interest rate is one of the lower defaults in the country, which makes it especially important for freelancers to specify their own rate in writing. Without a written late fee clause, you're leaving money on the table — and giving slow-paying clients very little incentive to pay on time. Here's what Michigan freelancers need to know.
Michigan's Legal Interest Rate
Michigan's legal interest rate is set at 5% per year (MCL 438.31) when no other rate is agreed to in writing. That's less than 0.42% per month — low enough that a client who pays 60 days late on a $5,000 invoice would owe you about $42 in interest at the statutory default rate.
For commercial transactions between businesses, Michigan allows parties to contract for a higher rate. The standard 1.5% per month (18% annually) is widely used and enforceable in Michigan with a clear written agreement. That same 60-day, $5,000 overdue invoice at 1.5% monthly accrues $150 in late fees — nearly four times the statutory default. Use our Late Payment Fee Calculator to run the numbers for your specific invoice and timeline.
Michigan's usury law context: Michigan's usury provisions (MCL 438.31 et seq.) cap interest on certain consumer loans, but these limits do not apply to commercial business-to-business transactions. Freelance service agreements are treated as commercial contracts, so consumer interest caps are not relevant to your late fee structure.
Michigan's Prompt Payment Act
Michigan has a Prompt Payment Act (MCL 125.1561 et seq.) that was designed primarily for construction contracts — it requires contractors and subcontractors to be paid within specified timeframes and applies interest on late payments. If you do construction-adjacent freelance work (architecture, engineering consulting, project management on construction projects), this act may apply to you.
For general freelance services — design, writing, development, consulting — the Prompt Payment Act does not apply unless you're working on a qualifying construction project. Private clients fall entirely under your contract terms.
State agency clients in Michigan are subject to separate prompt payment requirements under state procurement rules. If you invoice a Michigan state department, payment is typically due within 45 days, and late payment may accrue interest under the state's payment terms.
Detroit and Michigan: No Dedicated Freelancer Protection Law
Michigan currently has no statewide freelancer protection statute equivalent to New Jersey's Freelance Worker Protection Act or Illinois's Freelance Workers Protection Act. Detroit, Grand Rapids, and other Michigan cities have not passed city-level ordinances providing dedicated independent contractor payment protections.
This means Michigan freelancers working with private clients are operating entirely on contract law. There are no double-damages provisions, no administrative filing process for non-payment, and no government agency specifically handling freelancer payment disputes outside of general civil court.
What this means in practice: Your written contract carries all the weight. Michigan courts will enforce a well-drafted commercial contract with a clear late fee clause, but you need to actually have that contract — and it needs to specify your rate, payment terms, and consequences for late payment before work begins.
Setting Up Enforceable Late Fees in Michigan
Michigan courts apply standard contract principles to freelance payment disputes. To have an enforceable late fee:
- Written agreement required. Michigan's default interest rate of 5% annually is what you get if you don't specify otherwise. Always put your rate in writing before work starts.
- Specific terms. "1.5% per month on balances unpaid after 30 days from invoice date" is enforceable. "Late fees apply" is not.
- Disclosed before acceptance. Terms that appear only on the invoice — and not in the signed contract — may not be enforceable if the client can argue they didn't agree to them upfront.
- Reasonable rate. While Michigan doesn't cap commercial late fees, courts may reduce a rate they find unconscionable. 1.5% to 2% per month is safe territory; rates above 3% per month may face scrutiny.
- Follow-up documentation. Send a written notice when fees begin accruing. Issue an updated invoice showing the original amount and fees calculated to date. Keep all written communications about overdue payment.
Michigan's Unique 6-Year Statute of Limitations
One Michigan-specific detail worth knowing: the statute of limitations for written contract claims in Michigan is 6 years (MCL 600.5807). This is longer than many states. If a client owes you money on a signed contract, you have up to six years to file a claim in court — but don't rely on this as a reason to delay. The longer a debt sits unpaid, the harder it becomes to collect in practice, regardless of your legal window.
Collecting in Michigan
Michigan Small Claims Court handles disputes up to $7,000. You don't need a lawyer, and the filing fee is modest. Cases are typically heard within 30 to 60 days. For amounts above $7,000, you'll file in Michigan District Court, where the process is more formal but still accessible for smaller disputes. Above $25,000, you're in Circuit Court, where legal representation becomes important.
- Michigan Small Claims: up to $7,000 — no attorney required
- Michigan District Court: $7,000–$25,000
- Michigan Circuit Court: over $25,000 — consider an attorney
- Michigan Attorney General: for fraud patterns, not individual payment disputes
Want to know exactly what your Michigan client owes with late fees included? Calculate the updated total instantly.
Calculate Late Fees →Practical Tips for Michigan Freelancers
- Michigan's default interest rate is only 5% annually — always specify a higher commercial rate in your written contract
- 1.5% per month is the standard commercial rate and is clearly enforceable in Michigan with a written agreement
- Michigan has no dedicated freelancer protection statute — your contract is your primary enforcement tool
- Michigan's 6-year statute of limitations on written contracts gives you time, but don't wait — unpaid debts get harder to collect over time
- Small Claims Court (up to $7,000) is fast, affordable, and accessible without a lawyer
- Document every deliverable and approval in writing — email confirmations are your best evidence in a dispute
Michigan's low statutory default makes a written late fee clause more important here than in states with higher defaults. Get the rate in your contract, state it on every invoice, and follow up in writing within a week of any missed payment. The combination of a clear contract and consistent follow-up resolves most situations before they reach court.
Frequently Asked Questions
What is Michigan's legal interest rate for unpaid invoices? +
Michigan's default legal interest rate is 5% per year — one of the lower defaults in the country — which applies only when a contract doesn't specify its own rate. Freelancers should write a higher rate, typically 1.5% per month (18% annually), directly into their contract and invoices, since courts enforce that agreed rate instead.
How does Michigan's small claims limit compare to nearby states? +
Michigan's Small Claims Court caps disputes at $7,000, higher than neighboring Ohio's $6,000 but below Indiana's statewide $10,000 limit. For amounts above $7,000, Michigan District Court still offers an accessible process for smaller disputes before Circuit Court becomes necessary above $25,000.