Professional services
Contractor Insurance Calculator
Contractor insurance from revenue and trade, covering the policies a contract usually requires.
Result
An estimating tool, not insurance advice and not a quote. Actual premiums are set by underwriting on factors no calculator sees: claims history, credit and loss data, exact location, construction, contract requirements and the insurer's own appetite. What cover you need is a question for a licensed broker who has looked at your situation. Contractors typically need general liability, workers compensation, commercial auto and often a surety bond, and contracts frequently specify minimum limits plus additional insured status and waivers of subrogation. Uninsured subcontractors are commonly picked up on your own policy at audit, which is why certificates are collected before work starts rather than after.
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About this calculator
Why does my premium change at audit?
Because it is based on estimated revenue or payroll and trued up afterwards. Uninsured subcontractors are usually added to your payroll base at audit, which produces large and unwelcome adjustments.
Do I need certificates from subcontractors?
Before they start, every time. Without a valid certificate their exposure becomes yours at audit, and a subcontractor injury can fall on your workers compensation policy.
The formula
premium = exposure / rate basis x rate x risk multiplier, less deductible credit, plus claims loading
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