NH Contractor Bond Amount Calculator
Determine the required surety bond amount for your New Hampshire contractor license based on your license type and projected annual gross volume of work.
Formula
Required Bond = MAX(Statutory Minimum, Volume Bond × Entity Multiplier × Experience Adjustment), rounded up to the nearest $1,000.
Volume Bond tiers:
Entity Multipliers: Sole Proprietor ×1.00 | Partnership ×1.10 | Corporation/LLC ×1.05
Experience Adjustments: <1 year +20% | 1–2 years +10% | 3+ years no adjustment
Annual Premium ≈ Required Bond × surety rate (1.0%–3.5% depending on experience/credit)
Assumptions & References
- Statutory bond minimums are set under NH RSA 310-A:188 (General & Specialty Contractors) and related trade statutes (RSA 319-C Electricians; RSA 329-A Plumbers; RSA 153:27-a HVAC).
- This calculator provides an estimate only. Verify current requirements with the NH Office of Professional Licensure and Certification (OPLC) at oplc.nh.gov before purchasing a bond.
- Home Improvement Contractors must also comply with NH RSA 310-A:188 registration requirements administered by OPLC.