Surety Bond Cost Calculator
Last updated: October 15, 2026
Estimate the premium for a contract, license or court surety bond using bond amount, rate, term, credit and industry risk factors and fees.
Starting figures illustrate this model. Enter your own measurements, quoted costs and applicable terms; this page does not retrieve live prices or provider rates.
Estimated surety bond premium
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- Base premium before risk factors: —
- Risk adjustment: —
- Estimated monthly equivalent: —
- Premium as percent of bond amount: —
On this page
Quick summary: Estimate the premium for a contract, license or court surety bond using bond amount, rate, term, credit and industry risk factors and fees.
Read the complete guide
Updated reference sections in this guide are in English.
What this calculator estimates
Estimate the premium for a contract, license or court surety bond using bond amount, rate, term, credit and industry risk factors and fees.
How to use it
Enter Required bond amount ($); Base annual bond rate (%); Bond term (years); Credit factor; Industry or project risk factor; Underwriting and filing fees ($). Select Calculate to update the results.
How the calculation works
Bond amount is multiplied by the entered annual rate and term, then adjusted for credit and industry risk. Filing and underwriting fees are added.
Worked example: starting scenario
| Required bond amount ($) | 250000 |
|---|---|
| Base annual bond rate (%) | 2.5 |
| Bond term (years) | 1 |
| Credit factor | 1.1 |
| Industry or project risk factor | 1.15 |
| Underwriting and filing fees ($) | 350 |
| Estimated surety bond premium | $8,256.25 |
|---|---|
| Base premium before risk factors | $6,250.00 |
| Risk adjustment | $1,656.25 |
| Estimated monthly equivalent | $688.02 |
| Premium as percent of bond amount | 3.3% |
Important limitations
Surety pricing depends on bond type, obligee language, personal and business credit, financial statements, experience, collateral and market conditions.