How banks custody digital assets for clients
Banks custody digital assets through a regulated trust unit or a hired qualified custodian, and the coins are not a bank deposit or FDIC-insured.
Vahe HakobyanEditor-in-chief
Updated Oct 6, 20263 min readFact-checked
On this page
- Keys usually sit offline in cold storage or multi-signature wallets.
- The bank may hand key control to a third-party custodian.
- Keep statements and withdrawal records for taxes and security.
A custodian bank safekeeps assets for clients and stays out of commercial lending. Ownership stays with the client, and the custodian is a link in the chain between owner and asset.
What bank crypto custody means
A US bank usually holds crypto through a regulated trust unit, apart from its deposit business. That unit holds the keys and does not lend the coins out unless your custody agreement allows it. The crypto is not a bank deposit, so FDIC insurance does not reach it.
- Holds the private keys for client accounts
- Keeps ownership with the client, not the bank
- Carries out transfer and withdrawal instructions
How banks custody digital assets
Keys usually sit offline. Banks keep them in cold storage, away from the internet, or split control across multi-signature wallets and hardware security modules. Many banks do not hold keys directly and hire a third-party qualified custodian, and the firms that banks and regulators accept change over time. BNY said in 2026 it would work with Galaxy Digital on digital-asset services. Through it all you stay the owner, and the agreement makes the bank a safekeeping agent.
- 1Name the legal entityAsk which company signs the agreement. It may be a trust unit, an affiliate or a third-party custodian.
- 2Find who holds the keysThe bank may keep them or use a sub-custodian. Write down the firm in control.
- 3Ask how keys are storedAnswers usually name cold storage, multi-signature wallets or hardware security modules.
- 4Read the ownership clauseIt should say you stay the legal owner and the bank is a safekeeping agent.
- 5Check lending and staking termsThe agreement may permit lending or staking. If it does not, the coins usually stay put.
After custody: records and safety
Keep the signed agreement, your custody statements and every withdrawal or transfer confirmation. These records support tax reporting and help you spot an instruction you did not give. Buying crypto with US dollars is not a taxable event, but trading one crypto for another, a stablecoin included, is. Federal accounting guidance for banks that safeguard crypto has changed, so the bank's disclosures are worth keeping too.
Frequently asked questions
Only if the agreement you signed allows it. Staking is often a separate service, though some custody platforms build staking support in.
Custody coins are meant to sit outside the bank's own estate, so its creditors should not reach them. Courts handle each failure on its own.
Not always. Some banks run their own portal, and others use a third-party platform named in your agreement.
No. It depends on the bank's charter and on state law.
