APIs · head to head
Treasury Prime vs Volt
Treasury Prime
APIs
Banking as a service platform sold to sponsor banks rather than to fintechs
- From
- On request
- Rated
- -
Volt
APIs
Account-to-account pay by bank across Europe, the UK, Brazil and Australia
- From
- On request
- Rated
- -
The short version
- Each has a real cost: Treasury Prime a fintech cannot buy Treasury Prime directly since the 2024 pivot, so the sales process starts with finding a sponsor bank willing to take your programme, which adds months and removes most of your negotiating leverage on fees.; Volt account-to-account payments carry no chargeback mechanism, so consumers lose scheme dispute protection and merchants lose a familiar framework for handling claims.
- They diverge on capability: Treasury Prime covers BankOS, Volt covers Pay by bank.
- Prices and features above were last checked on 1 September 2026.
Where they differ
Only the attributes on which Treasury Prime and Volt actually diverge.
| Attribute | Treasury Prime | Volt |
|---|---|---|
| Platforms | API, Web | Web, REST API |
Identical on both: starting price (On request), pricing model (quote), free tier (No), user rating (Not yet rated), category (APIs).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in Treasury Prime
- BankOS
- OneKey Banking
- Deposit accounts
- Payments
- Card issuing
- Bank oversight tooling
- Ledger and reconciliation
- Programme onboarding
Only in Volt
- Pay by bank
- Circuit Breaker
- Virtual IBANs
- Payouts and refunds
- Verify
- Stablecoin checkout
What people use each for
The jobs each tool is most often brought in to do.
Treasury Prime
- A community or regional bank that wants to run an embedded finance line with examiner-acceptable oversight of its fintech programmesnot Volt
- A fintech that has already chosen its sponsor bank and needs API access to that bank rather than to a middleware layernot Volt
- A company that wants deposits spread across several banks for FDIC coverage beyond a single institution limitnot Volt
- A bank replacing a fragile middleware arrangement with a structure where it holds the customer contract and the oversight obligationnot Volt
Volt
- A travel seller with high average order values paying percentage card fees it wants to replace with flat transfer feesnot Treasury Prime
- An iGaming operator needing fast deposits and payouts where card acceptance is restrictednot Treasury Prime
- A merchant with heavy card fraud that wants strongly authenticated irreversible paymentsnot Treasury Prime
- A marketplace verifying seller bank accounts before paying outnot Treasury Prime
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Treasury Prime
- A fintech cannot buy Treasury Prime directly since the 2024 pivot, so the sales process starts with finding a sponsor bank willing to take your programme, which adds months and removes most of your negotiating leverage on fees.
- Commercial terms including minimum deposit balances, reserve requirements and per transaction pricing are set by the bank rather than the platform, so two fintechs on the same software can face materially different economics with no public benchmark.
- The company cut roughly half its staff in the 2024 pivot, which reduced the teams that supported fintech customers directly and left fintechs relying on their bank for support rather than on the vendor who wrote the software.
- Bank risk appetite is now the binding constraint, and after the Synapse failure sponsor banks decline programmes in higher risk categories that a middleware provider would once have onboarded, so some business models simply cannot get placed.
- If your sponsor bank exits the programme or is told by its regulator to reduce fintech exposure, you are migrating your entire deposit base to another institution, and the software being the same at both ends does not make that a small project.
Volt
- Account-to-account payments carry no chargeback mechanism, so consumers lose scheme dispute protection and merchants lose a familiar framework for handling claims.
- Refunds are outbound payments rather than reversals, which changes treasury handling and means a refund can fail for reasons a card refund never would.
- Conversion is lower than a stored card because the shopper must complete a bank authentication journey, and drop-off varies significantly by bank.
- Core pay by bank pricing is per transaction but refunds, payouts, virtual IBANs, Verify and fraud tooling are billed separately, so the real cost is a stack of line items.
- Bank API availability and quality vary across markets, and an outage at a major bank removes a slice of your checkout with no fallback unless you keep cards live.
Pricing, plan by plan
Treasury Prime
On request- BankOS$undefined/year
- Sold to sponsor banks, not directly to fintechs
- Fintech commercial terms are set by the sponsor bank
- Minimum deposits, reserves and per transaction fees vary by bank
Volt
On request- Volt pay by bank$undefined/year
- Per successful transaction fee, quoted by volume and market
- Separate charges for refunds, payouts, virtual IBANs and Verify
- Circuit Breaker fraud tooling priced as an add-on
Which should you pick?
Choose Treasury Prime if
- You need bankos.
- You work on API, Web.
- You also want onekey banking.
Choose Volt if
- You need pay by bank.
- You work on Web, REST API.
- You also want circuit breaker.
Questions people ask
- Is Treasury Prime or Volt better?
- Neither clearly leads. Treasury Prime starts at On request and Volt at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Treasury Prime or Volt?
- Treasury Prime starts at On request and Volt at On request.
- Does Treasury Prime or Volt run on more platforms?
- Treasury Prime runs on API, Web. Volt runs on Web, REST API.
- What is Treasury Prime best used for?
- Treasury Prime is most often used for a community or regional bank that wants to run an embedded finance line with examiner-acceptable oversight of its fintech programmes, a fintech that has already chosen its sponsor bank and needs api access to that bank rather than to a middleware layer, a company that wants deposits spread across several banks for fdic coverage beyond a single institution limit, a bank replacing a fragile middleware arrangement with a structure where it holds the customer contract and the oversight obligation. Of those, a community or regional bank that wants to run an embedded finance line with examiner-acceptable oversight of its fintech programmes and a fintech that has already chosen its sponsor bank and needs api access to that bank rather than to a middleware layer are not what Volt is typically brought in for.
- What can Treasury Prime do that Volt cannot?
- Treasury Prime covers BankOS, OneKey Banking, Deposit accounts, Payments. Volt covers Pay by bank, Circuit Breaker, Virtual IBANs, Payouts and refunds.
Answered from the vendors’ own pages
Treasury Prime: Can a fintech buy Treasury Prime directly?
No. Since the 2024 pivot it sells to banks. A fintech contracts with a sponsor bank running BankOS, and the bank sets the terms.
Volt: Are there chargebacks?
No. Bank transfers are irrevocable, so disputes are handled commercially between merchant and customer, not through a card scheme.
Treasury Prime: Why did it change model?
Regulatory pressure on the tri-party middleware structure, sharpened by the Synapse failure. Examiners want the bank holding the customer contract and the oversight obligation, which is what bank-direct means.
Volt: How do refunds work?
As a separate outbound payment initiated by the merchant, which Volt charges for separately from the inbound transaction.
Treasury Prime: What is OneKey Banking?
A way of spreading deposits across several banks in the network, used for FDIC coverage above a single institution limit and for resilience if one bank exits.
Volt: Which markets are covered?
Europe and the UK, plus Brazil and Australia, on a single API integration.
Treasury Prime: Is pricing published?
No, at neither the bank nor the fintech level. Fintech economics are set by the sponsor bank, so expect wide variation.
Related pages
More on Treasury Prime
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