Proof of Address for US LLCs: Phone Bill for Mercury & Wise

Your registered agent address satisfies the state's legal requirement for an LLC, but it's not automatically what a bank's KYB (Know Your Business) review treats as proof that your business genuinely operates somewhere. Banks like Mercury, Relay, and Wise Business run independent underwriting that often asks for a separate Proof of Address (POA) document — especially when the registered agent address is shared across many unrelated companies, which is a known pattern their risk systems watch for.

For a phone bill to function as proof of address, it needs the core elements any POA document requires:

Most banks accept a PDF statement uploaded directly during the KYB document request step of their application portal. Keep a current copy on hand before you apply, rather than requesting one reactively after a bank flags your application — proactively including it with your initial submission often avoids the review being paused on a follow-up document request in the first place.

A phone bill solves the document-type problem, but the underlying address itself still matters. HynoGo's registered agent service provides a dedicated commercial lease address rather than a shared CMRA-style mailbox — pairing that with a HynoConnect phone bill billed to the same address gives banks a consistent, verifiable business address picture across every document you submit, rather than two different addresses that raise more questions than they answer.

HynoGo bundles registered agent service, a dedicated commercial address, and HynoConnect's real carrier phone line specifically so your LLC's address story is consistent everywhere a bank looks — the EIN letter, the state filing, and your proof-of-address document all point to the same place.