Treasury Prime
Banking software that lets banks run embedded-banking programs and lets fintechs reach banks in its network.
Treasury Prime sells banks and credit unions a modular “Bank OS”: a supplemental core with virtual sub-ledgers, payment rails and compliance tools for running embedded-banking programs with fintech and corporate partners. Fintechs use its API and its “Find a Bank” marketplace to reach one or more banks in its network, and OneKey connects several banks through one integration. Its newsroom names banks that have joined the network, from Bangor Savings Bank in 2022 to i3 Bank and Coastal in January 2026. Treasury Prime publishes neither pricing nor a headquarters address.
- Website
- treasuryprime.com
- Infrastructure layers
- Banking-as-a-service, core banking
- Products (as published)
- Bank OS (embedded banking, digital banking, open banking, tools)
Virtual Ledger (virtual sub-ledger, supplemental core)
Payments (card programs, checks, book transfers, ACH, wire, real-time payments, deposit sweeps)
Find a Bank (marketplace submission to banks in its network)
OneKey (several banks through one API integration) - Client types
- Banks and credit unions, fintechs, enterprises
- Publicly announced partner banks
- i3 Bank (joined January 22, 2026)
Coastal (joined January 22, 2026)
U.S. Bank (Connected Partnership Network, October 23, 2025)
KeyBank (joined February 27, 2025)
People Trust Community Federal Credit Union (June 10, 2025)
OMB Bank (March 12, 2024)
Academy Bank (July 31, 2023)
Bangor Savings Bank (September 2022) - API documentation
- docs.treasuryprime.com
- Date checked
- Profile type
- Standard
Questions
What does Treasury Prime do?
Which banks are in the Treasury Prime network?
Is Treasury Prime a bank?
See also
- Unit and Increase, other BaaS platforms
- Sponsor banks directory
- All providers
Sources
- Treasury Prime products overview, Virtual Ledger, Payments, Find a Bank
- i3 Bank and Coastal announcement, U.S. Bank, KeyBank, OMB Bank
- Checked September 26, 2026.
Source: each provider’s own documentation, product pages, official announcements and filings, and official registers for licences, as linked in each profile. Fields a provider does not publish stay empty. How we build profiles: methodology.