Surety Bonds for Construction Contractors: How the Miller Act and SBA Guarantee Program Open Public Works to Small Builders
Public construction contracts above the FAR $150,000 threshold require performance and payment bonds under the Miller Act, with state Little Miller Acts setting thresholds from $25,000 to $500,000. The SBA Surety Bond Guarantee Program—which guaranteed $10.6 billion in bonds for 2,200+ small businesses in FY2025—lets approved sureties write bonds for small contractors by absorbing 80–90% of loss risk.
