Bridge Security Budget Calculator
Estimate cross-chain bridge security costs based on TVL, validator count, signature threshold, and transaction volume.
Inputs
%
Results
Annual Security Budget ($)
$50,000
Estimated Attack Cost ($)
$30,000
Monthly Budget ($)$4,166.67
Annual Cost per Validator ($)$10,000
TVL / Security Ratio200
Security Cost per Tx ($)$1.37
Byzantine Fault Tolerance (%)40
How to Use This Calculator
- Enter Total Value Locked ($) — the dollar amount of assets currently secured by your bridge.
- Set Validator / Guardian Count and the Signature Threshold (M of N) — e.g., 3 of 5 validators must sign.
- Enter the Annual Security Budget as a % of TVL (industry range: 0.1–2%).
- Set daily Bridge Transactions to understand per-transaction security overhead.
- Review Annual Security Budget ($), Cost per Validator, and Byzantine Fault Tolerance % to ensure robust multisig design.
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