Michigan commercial insurance rate filings (2026)
Every commercial-insurance carrier writing business in Michigan files its loss costs and rating values with the state's insurance regulator — the primary-source records that drive every commercial quote in Michigan. This page summarizes the 29 active filings we track for Michigan across 1 line(s) of business and 29 classification(s).
How Workers' Comp rates are set in Michigan
Michigan runs a private + state fund Workers' Comp market. Rate filings are reviewed by the Michigan Department of Insurance and Financial Services (DIFS). We track 29 distinct classification(s) for Michigan across 29 active filing(s). Workers' Comp loss costs are filed by NCCI in most states or by an independent state rating bureau; your actual premium is that filed loss cost multiplied by your carrier's loss-cost multiplier (LCM), your experience modifier, and your payroll divided by $100 — so two Michigan businesses in the same classification can pay very different rates. Comparing quotes from multiple carriers is the only way to see how those multipliers differ for your specific operation.
Across the Michigan filings we track, filed loss costs range from $0.04 to $3.71 per $100 of payroll, filed by 1 distinct carrier(s) or bureau(s). The lines represented are Workers Compensation. Classifications tracked include NCCI class codes 0005, 0042, 0106, 5022, 5183, 5190, 5223, 5403, 5437, 5462, 5538, 5606, 5645, 7219, 7230, 7231, 7380, 7382, 8279, 8392, 8742, 8748, 8810, 9015, 9058, 9101, 9402, 9403, 9586. The most-recent Michigan filing we track is effective January 2025. Every row below links to its SERFF tracking number so the Michigan regulator record can be verified.
Workers' Compensation covers medical bills and lost wages for Michigan employees injured on the job — mandatory in Michigan once you have staff.
In Michigan, Commercial General Liability carriers earned about $2.1B in premiums at a 43.1% loss ratio and a 9.6% underwriting profit (NAIC 2023). In Michigan, Commercial Multiple Peril carriers earned about $1.5B in premiums at a 63.5% loss ratio and a -6.7% underwriting profit (NAIC 2023). In Michigan, Workers Compensation carriers earned about $1.1B in premiums at a 40.8% loss ratio and a 21.8% underwriting profit (NAIC 2023). In Michigan, Commercial Auto carriers earned about $968M in premiums at a 64.5% loss ratio and a -2.7% underwriting profit (NAIC 2023). In Michigan, Inland Marine carriers earned about $788M in premiums at a 51.1% loss ratio and a 16% underwriting profit (NAIC 2023). In Michigan, Commercial Property carriers earned about $485M in premiums at a 42.1% loss ratio and a 31.5% underwriting profit (NAIC 2023). In Michigan, Medical Professional Liability carriers earned about $250M in premiums at a 47.9% loss ratio and a 4.2% underwriting profit (NAIC 2023). In Michigan, Product Liability carriers earned about $130M in premiums at a 35.2% loss ratio and a 21.3% underwriting profit (NAIC 2023). These market-level results come from the NAIC Report on Profitability by Line by State — a primary-source view of how each commercial line actually performs in Michigan, beyond the filed loss costs above.
- Michigan filed commercial loss costs we track run about $0.04 to $3.71 per $100 of payroll — the regulator-approved baseline before each carrier's multiplier and your experience modifier.
- Michigan rate filings are public, primary-source records; every figure here traces to a SERFF tracking number you can verify with the state regulator.
- Your actual Michigan premium depends on your class code, carrier loss-cost multiplier, experience modifier, and payroll — the filed loss cost is only the starting point.
Recent rate-filing activity — 8 state filings across 1 commercial line
Commercial carriers can't charge whatever they want — each state's Department of Insurance must approve loss-cost filings before they take effect. These are primary-source, government-held records available on SERFF Filing Access. Cited below: the most-recent active filings affecting commercial operations, with the real SERFF tracking number for each.
| Line | State | Overall change | Effective | SERFF tracking |
|---|---|---|---|---|
| WC | MI | per $100 payroll (CAOM advisory pure premium) | Jan 1, 2025 | MI-CAOM-2025-7231 |
| WC | MI | per $100 payroll (CAOM advisory pure premium) | Jan 1, 2025 | MI-CAOM-2025-7380 |
| WC | MI | per $100 payroll (CAOM advisory pure premium) | Jan 1, 2025 | MI-CAOM-2025-7382 |
| WC | MI | per $100 payroll (CAOM advisory pure premium) | Jan 1, 2025 | MI-CAOM-2025-8279 |
| WC | MI | per $100 payroll (CAOM advisory pure premium) | Jan 1, 2025 | MI-CAOM-2025-8392 |
| WC | MI | per $100 payroll (CAOM advisory pure premium) | Jan 1, 2025 | MI-CAOM-2025-8748 |
| WC | MI | per $100 payroll (CAOM advisory pure premium) | Jan 1, 2025 | MI-CAOM-2025-8810 |
| WC | MI | per $100 payroll (CAOM advisory pure premium) | Jan 1, 2025 | MI-CAOM-2025-9015 |
Source: SERFF Filing Access (filingaccess.serff.com) — the official public-records interface for state Department of Insurance filings. Loss-cost changes shown are the overall bureau-wide change in each state; the actual impact on your quote depends on your class code, payroll, experience modifier, and carrier-specific loss-cost multiplier (LCM). Get a quote for your exact numbers.
Get a real Michigan quote
Bureau-filed loss-cost changes are the regulator-approved starting point — actual premium depends on your class code, payroll, experience modifier, schedule credits/debits, and the carrier's LCM. Request a free Michigan quote in under 90 seconds.
Get a free Michigan quote →Related Michigan cost pages
Michigan-specific cost guides for the verticals we cover:
Michigan insurance profitability by line (2023 NAIC)
How profitable each commercial line runs in Michigan — loss ratio (incurred losses ÷ premiums earned); lower is more profitable for carriers:
Source: NAIC 2023 Report on Profitability by Line by State · compare every line & state →