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What Is a Bid Bond: Purpose and Use

By Kristi WaterworthUpdated Dec 18, 2025 at 12:48 AM EST
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Key Points

  • Bid bonds guarantee that contractors complete projects they bid on, often for public or government jobs.
  • If a contractor fails, a performance bond replaces the bid bond, ensuring project completion.
  • The Miller Act mandates contractors to secure bonds for federal projects over $100,000, protecting investments.
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