Citigroup, the fourth-largest U.S. bank by total assets, has confirmed that it will go live with native Bitcoin custody for institutional clients later this year. The offering will not be a standalone crypto product. It will sit inside Custody+, a new modular custody suite the bank unveiled on August 18, 2026 as part of a multi-year revamp of its post-trade infrastructure.
The bank’s Investor Services division outlined the plan in an official release issued out of London, saying digital asset custody will go live later in the year “starting with the custody of Bitcoin.” Citi’s securities services business currently supports custody clients in over 100 markets, of which 62 are proprietary, and oversees roughly $30 trillion in client assets. At group level, Citi reported total assets of $2.78 trillion at the end of the first quarter of 2026, per its 10-Q filing.
The announcement formalizes a plan that Citi has been signaling for close to a year, and it places the bank alongside BNY Mellon, U.S. Bank, State Street, and Standard Chartered in a rapidly filling group of large custodian banks moving into native digital asset custody rather than routing exposure through ETFs or third-party providers.
According to Citi, the Bitcoin service is being built on the bank’s “common digital asset architecture,” and clients will access “traditional and crypto custody capabilities within the same framework for an integrated experience.” That framing is how Citi is trying to differentiate itself from pure-play crypto custodians. Bitcoin holdings would sit inside the same account structure and reporting stack as securities, rather than in a separate wallet product bolted on the side.
What Custody+ actually is
Custody+ is not a single product. Citi is presenting it as a modular suite that runs across eight capabilities in three buckets: speed and certainty, intelligence, and control, and infrastructure for diverse operating models. Bitcoin custody sits inside the third bucket, alongside a white-label platform offering that lets other institutions plug into Citi’s back office.
The other tracks include real-time asset servicing, instant settlements at central securities depositories, on-demand FX with automated hedging, real-time cash and liquidity management, an AI-driven tax documentation workflow that Citi says has cut processing times by up to 70%, an enhanced AI-powered Market Guide platform available in over 100 locations, and cloud and API-based data access for client-side analytics and AI models.
The launch coincides with the completion of the U.S. rollout of Citi’s patented Single Event Processing (SEP) technology. Citi said the rollout has reduced processing times for voluntary corporate actions in the U.S. by up to 92%, that 96% of U.S. voluntary events are now processed in under two hours, and that more than 80% of the bank’s total event volume runs in real time.
Chris Cox, Head of Investor Services at Citi, said the business invests more than US$2 billion a year in its platform strategy. “Custody+ is a clear example of this investment as we build infrastructure to eliminate latency and drag for institutional investor clients,” Cox said in the release. Amit Agarwal, Head of Custody, described Custody+ as “the product of a multi-year commitment to building infrastructure that matches the speed of our clients’ strategies.”
How Citi got here
The Bitcoin plan has been signposted for the better part of a year. Citi first flagged a 2026 target for crypto custody in an October 2025 interview with CNBC, when Biswarup Chatterjee, the bank’s global head of partnerships and innovation in services, said the offering had been in development for two to three years. The Crypto Times reported at that stage that the initial focus was on custody for stablecoin reserves and crypto ETF underlyings.
In February 2026, Nisha Surendran, Head of Digital Asset Custody Development at Citi, told the Strategy World conference that the bank planned to hold native Bitcoin directly and integrate it into the same risk, tax and compliance workflows Citi uses for equities and bonds. That description lines up with what Custody+ now formalizes. Michael Saylor separately predicted around the same time that major U.S. banks would begin buying and custodying Bitcoin in the first half of 2026.
Ties to Citi Token Services and tokenized deposits
Custody+ also folds in Citi’s existing digital asset work on the cash side. Under real-time cash and liquidity, the release says Citi Token Services (CTS) is enabling “the near-instantaneous movement of tokenized deposits on a 24/7 basis across select Citi markets.”
CTS runs on a private permissioned blockchain and has been live since 2024. Citi has been steadily expanding its footprint, integrating CTS with 24/7 USD Clearing in September 2025, adding Euro settlement out of Dublin in November 2025, and onboarding Siam Commercial Bank in July 2026 as the first external bank live on the combined 24/7 USD Clearing and CTS setup.
Citi has also been part of broader interbank digital asset infrastructure work, joining the 17-bank Swift blockchain ledger pilot and participating in the tokenized deposit network that JPMorgan, Bank of America, Wells Fargo, and Citi are building through The Clearing House.
Wall Street’s custody push is now crowded
Citi’s Bitcoin custody plan is landing into what has quickly become a competitive segment among the large custodian banks, not an empty field.
BNY Mellon, the largest custodian globally with roughly $59 trillion in client assets, received a SAB 121 variance in 2024 and has since built out an institutional digital asset custody platform, most recently extending it to hold, mint, and redeem Circle’s USDC. U.S. Bank resumed its Bitcoin custody service in September 2025 with NYDIG as sub-custodian, adding Bitcoin ETFs to the offering for the first time.
State Street has flagged plans to enter crypto custody in 2026. Standard Chartered has moved to fully absorb its Zodia Custody unit in an internalization deal The Crypto Times reported on earlier this year. Israel’s Bank Leumi last week said it will offer BTC, ETH, and SOL trading via Galaxy in early 2027.
The regulatory backdrop has shifted materially since 2024. The SEC’s rescission of SAB 121, the passage of the GENIUS Act on stablecoins, and progress on the CLARITY Act have removed most of the accounting and legal frictions that kept large U.S. banks out of native crypto custody through the previous cycle. State-level moves have added to this, with Minnesota approving crypto custody services for banks and credit unions effective August 1, and the OCC last week clearing a Trump-backed national trust bank to take over USD1 stablecoin issuance from BitGo.
For Citi, the interesting benchmark is not whether it is first to Bitcoin custody, because it clearly is not. The more relevant question is whether the integration angle actually pulls mandates. Citi is pitching Custody+ as a way for asset managers to run Bitcoin, tokenized cash, and traditional securities through the same account, the same reporting, and the same tax workflow. Whether institutional clients consolidate on that model, or continue to split mandates between traditional custodians and crypto-native specialists such as Coinbase Custody and Anchorage Digital, is the open question.
Citi has not disclosed a specific launch date beyond “later this year,” nor fee structures, minimum ticket sizes, or which sub-custody or key management partners, if any, will support the Bitcoin offering.
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