How Is the Nonce Managed for a Multi-Signature Wallet?

For a multi-signature (multisig) wallet on Ethereum, the nonce is associated with the multisig wallet's smart contract address, not the individual signers' addresses. Each successful transaction executed by the multisig contract increments its single, contract-level nonce.

The individual signers must agree on the transaction details, including the correct sequential nonce, before signing, and the contract ensures only one transaction per nonce is processed.