A routing number is a nine-digit code used to identify a U.S. financial institution in electronic transactions like ACH and wire transfers. It’s required for bank account setup, direct deposits, and merchant settlements. Each bank and branch has a specific routing number that determines where funds should be directed.
When you set up a merchant account or change bank details, providing the correct routing number ensures smooth settlement. AltoPay verifies routing numbers during onboarding to reduce funding delays or transaction errors. It’s important to double-check this detail when updating payout settings, especially if you use multiple accounts.

For more than a decade, Jessica Velasco has been a thought leader in the payments industry. She aims to provide readers with valuable, easy-to-understand resources.