Citi is preparing to bring Bitcoin into its custody business, with plans to safeguard BTC alongside traditional securities through its newly announced Custody+ offering. The bank set a target of "later in 2026" for the service, but the rollout date, target markets and eligible client types remain undisclosed, and fees, key-control arrangements and any subcustodian have not been named. The natural audience for the service is the institutions already using Citi's securities-custody relationships. Citi Securities Services is one of the world's largest custodians, with assets under custody and administration measured in the tens of trillions of dollars, which frames the scale of the client base the service is aimed at.

Keeping Bitcoin inside the custody relationship

For the institutions Citi wants to reach, Bitcoin is simply another position that requires approvals, records and safeguards — and it often sits with a different provider from the rest of a portfolio. That split can mean separate onboarding, separate reporting and extra controls for a relatively small allocation. A fund may keep its bonds, equities and funds with a global custodian, then create another relationship solely for Bitcoin. Reporting itself has shifted on one front: U.S. fair-value accounting rules for crypto assets took effect for fiscal years beginning after December 2024, replacing the previous cost-less-impairment model.

Citi is aiming at clients already using its securities-custody services. If a client can add Bitcoin through the same bank, it may avoid bringing in another provider and building a new process around it. The practical benefit depends on the terms Citi eventually offers: reporting, transfer approvals, settlement arrangements and the contracts governing the assets.

The terms clients still need to see

Citi's Custody+ announcement gives a target period rather than a rollout plan. "Later in 2026" could mean a limited launch in one market or a wider release closer to year-end.

• Launch date and rollout stages: Funds need time for due diligence, internal approvals and onboarding.
• Markets and client eligibility: Custody rules, licensing requirements and the responsible legal entity differ across jurisdictions.
• Fees and minimum balances: Clients cannot assess the cost of consolidating assets without them.
• Key control and subcustody: These arrangements determine who safeguards the Bitcoin and who carries operational responsibility.
• Withdrawal, segregation and liability terms: They affect a client's view of liquidity, asset protection and risk.

Key control will be central to that review. The U.S. Office of the Comptroller of the Currency permits banks to use third parties for crypto custody, including subcustodians, subject to appropriate risk management, according to its guidance. The OCC's position is a reminder that clients need more than a product name: they need to know where the Bitcoin sits, how it is separated and who is accountable for it.

Citi has previously worked on custody infrastructure. In 2022, it said it had selected METACO to develop and pilot digital-asset custody capabilities. That earlier announcement shows Citi has been preparing for this area for some time. It does not identify METACO as the production provider for Custody+; Citi has not named one in the latest release.

Citi will start with the clients it already has

Coinbase Institutional and Fidelity Digital Assets already provide institutional digital-asset custody, while BNY remains a major name in conventional asset servicing and has itself offered digital-asset custody for Bitcoin and Ether since 2022, initially to select clients. Citi enters a market where specialist crypto infrastructure is well established and where bank custody for Bitcoin already has a precedent.

Institutions have also had a regulated wrapper for Bitcoin exposure since U.S. spot Bitcoin exchange-traded products began trading in January 2024. Direct custody is a different route — the client holds the asset itself rather than a fund share — and it is the route that changes the safekeeping, key-control and liability questions in play.

Its most obvious opportunity lies with institutions that already keep conventional assets at Citi. A client that wants to hold Bitcoin may prefer to extend an existing custody relationship rather than introduce another provider, another contract and another operating process. That gives Citi a defined role without requiring it to replicate every service offered by Coinbase Institutional or Fidelity Digital Assets. The question is whether Custody+ can make a Bitcoin allocation easier to administer for the clients Citi already serves.

Bitcoin joins Citi's separate tokenization work

Citi has also been developing blockchain-based products for traditional markets. Its tokenized depositary-receipt project for private shares placed the bank in both an issuer and a custody role. Our team covered Citi's pre-IPO tokenization platform and its attempt to give private-market shares a clearer institutional structure.

Bitcoin custody involves a different asset and a different set of risks. Tokenized depositary receipts are connected to private-company equity, while Bitcoin requires wallet management, transfer controls and key security. Citi is drawing both into the custody and asset-servicing business it already operates.

Citi's price forecasts are a separate matter

A custody service can be useful whether a client is increasing an allocation, reducing one or simply holding Bitcoin it already owns. The bank earns from safeguarding and administering assets, rather than from a specific view on where Bitcoin trades next. That is why Citi's market research and its custody plan can move independently. Citi's lower Bitcoin and Ether targets were a research call. Custody is a service for clients that want institutional controls around their holdings.

Citi has set out the idea; the operating terms are still to come. The next release should say where Custody+ will launch, who can use it, how Bitcoin will be held and what the service will cost. That is when institutions will be able to judge whether it genuinely makes Bitcoin easier to manage within an existing custody relationship.