Colorado Contractor License Bond Amount Calculator
Estimate the required surety bond amount and your estimated annual premium for Colorado contractor licenses. Bond requirements vary by license type and, for some categories, by projected annual revenue.
Credit score affects the premium rate charged by the surety.
Formulas Used
Annual Premium = Bond Amount × Credit-Based Rate
Total Premium (multi-year) = Annual Premium × Term × Multi-Year Discount Factor
Effective Annual Cost = Total Premium ÷ Term
Multi-Year Discount Factors: 1 yr = 1.00 (no discount), 2 yrs = 0.95 (5% off), 3 yrs = 0.90 (10% off)
Credit-Based Rates: Excellent (750+) = 1%, Good (700–749) = 1.5%, Fair (650–699) = 2.5%, Poor (600–649) = 4%, Bad (<600) = 7.5%
Revenue Tiers (General Contractor / Roofing): Bond amount steps up as projected annual revenue increases through defined thresholds.
Assumptions & References
- State-licensed trades (electrical, plumbing, HVAC, solar, elevator, fire suppression, manufactured home, pesticide) bond amounts are based on Colorado DORA and relevant state agency requirements as commonly published.
- General contractor and roofing bond amounts reflect common local/municipal requirements across Colorado jurisdictions (Denver, Jefferson County, Arapahoe County, etc.). Always verify with your specific municipality, as amounts vary.
- Premium rates are industry-standard surety market estimates and will vary by surety company, applicant financial history, and underwriting criteria.
- Multi-year discounts (5% / 10%) are typical surety market incentives and are not guaranteed by all carriers.
- This calculator does not account for additional fees such as filing fees, notary fees, or broker commissions.
- References: Colorado DORA – Contractor Licensing; Colorado Revised Statutes Title 12 (Professions & Occupations); local municipal codes.
- Always consult a licensed surety bond agent and your local licensing authority for exact requirements before purchasing a bond.