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APIs · head to head

Aiia vs Unit

Aiia logo

Aiia

APIs

Open banking and open finance API platform, now operating as Mastercard Open Banking

From
On request
Rated
-
Full reviewWebsite
Unit logo

Unit

APIs

Banking as a service platform for embedding deposit accounts, cards and payments, with a sponsor bank behind it

From
On request
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Aiia it is now part of Mastercard rather than an independent company, so a business specifically wanting to avoid card network dependency in its banking infrastructure no longer gets that separation by choosing Aiia.; Unit your product depends on a sponsor bank you do not contract with directly, and 2024 showed what that means: Thread Bank received an FDIC enforcement action naming its banking as a service programmes and Blue Ridge Bank went under an OCC consent order and offboarded fintech partners.
  • They diverge on capability: Aiia covers Bank account data access, Unit covers Deposit accounts.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Aiia and Unit actually diverge.

Attributes where Aiia and Unit differ
AttributeAiiaUnit
PlatformsWeb, APIWeb, iOS, Android

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 Aiia

  • Bank account data access
  • Payment initiation
  • Mastercard Open Finance integration
  • Modern authentication support
  • Multi-country coverage
  • Developer documentation and sandbox

Only in Unit

  • Deposit accounts
  • Card issuing
  • Payments
  • White label components
  • Compliance operations
  • Lending
  • Programme reporting
  • Sandbox

What people use each for

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

Aiia

  • A lending or credit product needing affordability checks via European bank account datanot Unit
  • A personal finance or accounting product needing transaction history across Nordic and European banksnot Unit
  • A payments product wanting account-to-account payment initiation under open banking regulationnot Unit
  • A business wanting the stability and continued investment of Mastercard ownership behind its banking connectivity providernot Unit

Unit

  • A vertical SaaS platform for contractors that wants to hold customer funds and issue expense cards without pursuing a charternot Aiia
  • A payroll or benefits platform embedding accounts so employees can be paid ahead of schedulenot Aiia
  • A marketplace that wants seller balances to sit in real accounts under its own brand rather than as ledger entries at a processornot Aiia
  • A company that needs interchange revenue from a card programme to make the unit economics of its core product worknot Aiia

Where each one falls short

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

Aiia

  • It is now part of Mastercard rather than an independent company, so a business specifically wanting to avoid card network dependency in its banking infrastructure no longer gets that separation by choosing Aiia.
  • Pricing is not published and requires engaging Mastercard's open finance sales process, which can be a heavier sales motion than dealing with a smaller independent open banking provider.
  • Its strongest bank coverage remains concentrated in the Nordics and Northern Europe, so companies needing dense coverage in Southern or Eastern Europe should verify current bank connectivity before committing.
  • Brand confusion is real: developer documentation, login portals and older case studies still reference "Aiia" while newer Mastercard material refers to "Mastercard Open Banking," and a company researching either name in isolation may miss half the relevant material.
  • As with any open banking platform, reliability still depends on the consistency of the underlying banks' own APIs, which is a systemic industry issue rather than something Aiia specifically controls.

Unit

  • Your product depends on a sponsor bank you do not contract with directly, and 2024 showed what that means: Thread Bank received an FDIC enforcement action naming its banking as a service programmes and Blue Ridge Bank went under an OCC consent order and offboarded fintech partners.
  • Programme approval by the bank is a separate gate from signing with Unit, and it can add months and impose product restrictions that were not visible during the commercial conversation.
  • Compliance obligations are shared but the operational load lands on you, and platforms consistently underestimate the staffing needed for disputes, escalations and the bank ongoing oversight requests.
  • Pricing is unpublished and blends platform fees, per-account and per-transaction charges and interchange sharing, which makes it hard to model unit economics before you have volume and easy to be surprised by the minimum.
  • Migrating a live deposit programme to a different provider or bank is extremely disruptive because it involves moving customer accounts and card credentials, so switching costs are far higher than for ordinary software.

Pricing, plan by plan

Aiia

On request
  • Aiia Enterprise (Mastercard Open Banking)$undefined/year
    • Pricing not published, quote via Mastercard Open Finance sales

Unit

On request
  • Unit Banking as a Service$undefined/year
    • Platform fee plus per-account and per-transaction charges, quoted
    • Interchange sharing arrangements negotiated per programme
    • Minimum commitment typical

Which should you pick?

Choose Aiia if

  • You need bank account data access.
  • You work on Web, API.
  • You also want payment initiation.
Aiia review

Choose Unit if

  • You need deposit accounts.
  • You work on Web, iOS, Android.
  • You also want card issuing.
Unit review

Questions people ask

Is Aiia or Unit better?
Neither clearly leads. Aiia starts at On request and Unit at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Aiia or Unit?
Aiia starts at On request and Unit at On request.
Does Aiia or Unit run on more platforms?
Aiia runs on Web, API. Unit runs on Web, iOS, Android.
What is Aiia best used for?
Aiia is most often used for a lending or credit product needing affordability checks via european bank account data, a personal finance or accounting product needing transaction history across nordic and european banks, a payments product wanting account-to-account payment initiation under open banking regulation, a business wanting the stability and continued investment of mastercard ownership behind its banking connectivity provider. Of those, a lending or credit product needing affordability checks via european bank account data and a personal finance or accounting product needing transaction history across nordic and european banks are not what Unit is typically brought in for.
What can Aiia do that Unit cannot?
Aiia covers Bank account data access, Payment initiation, Mastercard Open Finance integration, Modern authentication support. Unit covers Deposit accounts, Card issuing, Payments, White label components.

Answered from the vendors’ own pages

Aiia: Is Aiia still an independent company?

No, it was acquired by Mastercard in 2021 and now operates as part of Mastercard Open Finance Solutions, referenced as Aiia Enterprise.

Unit: Who actually holds the money?

A chartered partner bank, not Unit. Deposits sit at the sponsor bank and FDIC insurance flows from that bank, so its condition is your condition.

Aiia: Does the Aiia brand still exist?

Yes, in developer documentation and login portals, but the company behind it is Mastercard.

Unit: What happened with Unit sponsor banks in 2024?

Thread Bank received an FDIC enforcement action that explicitly named its banking as a service and lending as a service programmes, and Blue Ridge Bank was under an OCC consent order from January 2024 and offboarded fintech partners. Blue Ridge exited the order in late 2025.

Aiia: Which banks does it cover?

Around 3,000 European banks, with strongest coverage in the Nordics and Northern Europe.

Unit: What does Unit cost?

Not published. Expect a platform fee, per-account and per-transaction charges, an interchange share and a minimum commitment.

Unit: Do we need our own compliance team?

Yes. Unit supplies tooling and the bank sets the rules, but disputes, escalations and evidence for bank oversight require named people on your side.

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