What is Casa and how does its bitcoin multisig work?

Casa is a bitcoin security company that helps people hold their own coins in a multisig vault rather than on an exchange. A Casa vault spreads keys across your phone, hardware wallets and one key held by Casa, so losing a single key does not mean losing your bitcoin. Casa came out of stealth in 2018 and describes its product as non-custodial software.

How does Casa bitcoin multisig work?

On the Standard plan, a vault has three keys and any two must sign to send funds. Premium and Private Client members use a 5-key vault where three signatures are needed. The keys are meant to sit in different places, such as your phone, one or more hardware wallets and Casa's own key.

As of November 2026, Casa supports hardware devices from Trezor, Ledger, Coldcard, Keystone and Foundation (Passport Core), plus some YubiKey models. Coldcard and Keystone work only for bitcoin vaults. Casa's plans also list Ethereum and stablecoin vaults, which need a Trezor or Ledger. Our multisig wallet guide covers the general idea of m-of-n signing.

Is Casa bitcoin custody or self-custody?

Casa says it is not a custodian because it never holds enough keys to send your funds. Its pricing page states that it does not hold, control or transmit customer funds. This is often called collaborative or assisted custody. The difference from an exchange account is explained in custodial vs non-custodial wallets.

What is the Casa recovery key and how does it protect security?

The Casa Recovery Key is kept offline with backups in several locations and jurisdictions. It has the same weight as any of your keys, so it is not a master key. Members use it when a key is lost, stolen, damaged or being replaced. Requests go through identity checks and security delays before Casa signs, which gives the real owner time to spot a fraudulent attempt. Casa says there is no extra charge for using it and discourages routine use.

How does Casa bitcoin inheritance work?

Inheritance is included in the Standard and Premium plans, as of November 2026. You name a recipient in advance. If you die or become incapacitated, the recipient can request access, which starts a 6-month verification period set by Casa. During that time the owner gets monthly notices and can reject the request. If nobody rejects it, the recipient gains access when the period ends.

On pricing, Casa sells memberships. Individual tiers are Standard, Premium and Private Client, and organizations can choose Business, Enterprise or Government plans. Higher tiers add more keys, shared accounts, video verification and advisor access. Plans and fees change, so check Casa's pricing page directly for current terms.