Montana Workers Comp Calculator

Estimate workers compensation premiums for Montana businesses using state-specific rate adjustments.

Montana Rates✓ Updated 2026monopolistic Market

Workers Comp Premium Estimator

Formula: (Payroll ÷ 100) × Class Rate × Experience Mod

$

Enter total annual wages paid to employees in this job class

State adjustment factor: 1.00x (vs. national average)

1.00 = average. Below 1.00 = better safety record (discount). Above 1.00 = more claims (surcharge).

Enter payroll amount and select a job type to see your estimate

Workers Comp in Montana: What to Know

Market System

monopolistic

Avg. Rate

$1.95/100

Rate Factor

1.00x national avg

⚠️ Monopolistic State Note: Montana State Fund is the exclusive insurer

Montana workers compensation rates are adjusted by a factor of 1.00x compared to the national average. This reflects Montana's specific claims experience, medical costs, and regulatory environment.

Like all states, Montana requires most employers to carry workers compensation insurance. Premiums are based on your payroll by job class, your company's claims history (experience modifier), and the state fund rates.

Common Class Code Rates for Montana

Job TypeCodeNat'l RateMT Rate
Office/Clerical8810$0.35$0.35
Outside Sales8742$0.58$0.58
Automobile Salesperson8748$0.65$0.65
Retail Store8017$1.50$1.50
Department Store8061$1.40$1.40
Grocery Store8006$2.10$2.10
Restaurant/Food Service9079$2.50$2.50
Fast Food Restaurant9058$2.20$2.20

Rate per $100 of payroll. State rate = national avg × 1.00 (Montana factor). Estimates only.