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Accounting · head to head

Modern Treasury vs Treasury Prime

Modern Treasury logo

Modern Treasury

Accounting

Payment operations and ledger infrastructure that sits between your product and your own bank accounts

From
On request
Rated
-
Full reviewWebsite
Treasury Prime logo

Treasury Prime

APIs

Banking as a service platform sold to sponsor banks rather than to fintechs

From
On request
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Modern Treasury you must already have or be able to obtain your own bank accounts with the right connectivity, so early stage companies without a banking relationship cannot use it and are pushed towards a sponsor bank model instead.; 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.
  • They diverge on capability: Modern Treasury covers Multi-rail payment initiation, Treasury Prime covers BankOS.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Modern Treasury and Treasury Prime actually diverge.

Attributes where Modern Treasury and Treasury Prime differ
AttributeModern TreasuryTreasury Prime
PlatformsWebAPI, Web
CategoryAccountingAPIs

Identical on both: starting price (On request), pricing model (quote), free tier (No), user rating (Not yet rated).

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 Modern Treasury

  • Multi-rail payment initiation
  • Bank connectivity
  • Ledgers
  • Automatic reconciliation
  • Approval workflows
  • Virtual accounts
  • Compliance tooling
  • Return and exception handling

Only in Treasury Prime

  • BankOS
  • OneKey Banking
  • Deposit accounts
  • Payments
  • Card issuing
  • Bank oversight tooling
  • Ledger and reconciliation
  • Programme onboarding

What people use each for

The jobs each tool is most often brought in to do.

Modern Treasury

  • A marketplace paying out to thousands of sellers that needs a ledger its application can trust rather than reconciling a payments dashboard by handnot Treasury Prime
  • A lender originating and servicing loans that must track disbursements, repayments and returns against its own bank accountsnot Treasury Prime
  • A company that wants to move off a banking as a service provider and hold its own bank accounts after seeing sponsor banks offboard fintech programmesnot Treasury Prime
  • An insurer handling premium collection and claims payment across several rails with approval controls and an auditable trailnot Treasury Prime

Treasury Prime

  • A community or regional bank that wants to run an embedded finance line with examiner-acceptable oversight of its fintech programmesnot Modern Treasury
  • A fintech that has already chosen its sponsor bank and needs API access to that bank rather than to a middleware layernot Modern Treasury
  • A company that wants deposits spread across several banks for FDIC coverage beyond a single institution limitnot Modern Treasury
  • A bank replacing a fragile middleware arrangement with a structure where it holds the customer contract and the oversight obligationnot Modern Treasury

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Modern Treasury

  • You must already have or be able to obtain your own bank accounts with the right connectivity, so early stage companies without a banking relationship cannot use it and are pushed towards a sponsor bank model instead.
  • Pricing rests on an annual minimum commitment, and companies that miss their volume forecast pay the minimum regardless, which makes the headline per-transaction rate close to irrelevant in year one.
  • Supported bank connectivity is a finite list, so if your bank is not on it you are either waiting for an integration or changing banks, which is a far larger project than adopting the software.
  • It is software over banking, not banking, so it does not solve card issuing, deposit accounts or the licensing questions that a company embedding financial products still has to answer elsewhere.
  • The ledger is genuinely good but adopting it properly means making it the source of truth for balances in your product, which is a significant application change rather than a payments integration and is where implementations run long.

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.

Pricing, plan by plan

Modern Treasury

On request
  • Modern Treasury Platform$undefined/year
    • Platform access fee covering API, dashboard, infrastructure and support
    • Usage-based fees across ACH, wires, RTP, FedNow, push to card, cheques and stablecoins
    • A single annual minimum commitment that both platform and usage fees count towards

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

Which should you pick?

Choose Modern Treasury if

  • You need multi-rail payment initiation.
  • You also want bank connectivity.
Modern Treasury review

Choose Treasury Prime if

  • You need bankos.
  • You work on API, Web.
  • You also want onekey banking.
Treasury Prime review

Questions people ask

Is Modern Treasury or Treasury Prime better?
Neither clearly leads. Modern Treasury starts at On request and Treasury Prime at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Modern Treasury or Treasury Prime?
Modern Treasury starts at On request and Treasury Prime at On request.
Does Modern Treasury or Treasury Prime run on more platforms?
Modern Treasury runs on Web. Treasury Prime runs on API, Web.
What is Modern Treasury best used for?
Modern Treasury is most often used for a marketplace paying out to thousands of sellers that needs a ledger its application can trust rather than reconciling a payments dashboard by hand, a lender originating and servicing loans that must track disbursements, repayments and returns against its own bank accounts, a company that wants to move off a banking as a service provider and hold its own bank accounts after seeing sponsor banks offboard fintech programmes, an insurer handling premium collection and claims payment across several rails with approval controls and an auditable trail. Of those, a marketplace paying out to thousands of sellers that needs a ledger its application can trust rather than reconciling a payments dashboard by hand and a lender originating and servicing loans that must track disbursements, repayments and returns against its own bank accounts are not what Treasury Prime is typically brought in for.
What can Modern Treasury do that Treasury Prime cannot?
Modern Treasury covers Multi-rail payment initiation, Bank connectivity, Ledgers, Automatic reconciliation. Treasury Prime covers BankOS, OneKey Banking, Deposit accounts, Payments.

Answered from the vendors’ own pages

Modern Treasury: Is Modern Treasury a bank or a banking as a service provider?

Neither. You hold your own bank accounts and it is software over them. That avoids sponsor bank concentration risk but means you need the bank relationship yourself.

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.

Modern Treasury: What does it cost?

Not published. A platform access fee plus usage fees across rails, on an annual term with a single minimum commitment. Negotiate the minimum, not the per-transaction rate.

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.

Modern Treasury: Which rails are supported?

ACH, wires, RTP, FedNow, push to card, cheques and stablecoin payments, subject to what your bank supports.

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.

Modern Treasury: Do we still need our own compliance programme?

Yes. KYB, KYC and transaction monitoring are included in the platform, but you are the one holding the accounts and the regulatory obligation sits with you and your bank.

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.

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