Is Formance or i2c better?

Neither clearly leads. Formance starts at Free and i2c at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.

Which is cheaper, Formance or i2c?

Formance has a free tier; the other does not. Paid plans start at Free for Formance and On request for i2c.

Does Formance or i2c run on more platforms?

Formance runs on Linux, Docker, Kubernetes, Web, API. i2c runs on Web, REST API.

Can I use Formance for free?

Yes. Formance has a free tier, so you can try it without paying. i2c starts at On request.

What is Formance best used for?

Formance is most often used for a marketplace splitting a single customer payment between seller, platform fee and tax that needs the split to be atomic and auditable, a fintech whose homegrown balances table produced numbers finance could not reconcile and now needs proper double-entry before an audit, a payments team that wants one normalised model across several psps so reconciliation is not written separately for each, a company that wants its ledger under a licence it can keep running even if the vendor disappears. Of those, a marketplace splitting a single customer payment between seller, platform fee and tax that needs the split to be atomic and auditable and a fintech whose homegrown balances table produced numbers finance could not reconcile and now needs proper double-entry before an audit are not what i2c is typically brought in for.

What can Formance do that i2c cannot?

Formance covers Double-entry ledger, Numscript transaction DSL, Payments connectivity, Reconciliation. i2c covers Configurable product engine, Credit and instalments, Fraud and risk tooling, Digital banking front ends. Both handle Multi-currency.

APIs · head to head

Formance vs i2c

Formance

APIs

Open source double-entry ledger and payment orchestration for money-moving software

From: Free
Rated: -

Full review Website

i2c

APIs

Configurable card issuing and banking processing platform for banks and programme managers

From: On request
Rated: -

Full review Website

The short version

Only Formance has a free tier, so it costs nothing to try first.
Each has a real cost: Formance formance holds no money and provides no regulatory cover, so it must be paired with a payments provider or bank, and buyers occasionally mistake a ledger for a treasury system and discover the gap late.; i2c developer experience lags API-native competitors, and teams expecting Stripe-grade documentation and sandboxes find an enterprise integration project instead.
They diverge on capability: Formance covers Double-entry ledger, i2c covers Configurable product engine.
Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Formance and i2c actually diverge.

Attributes where Formance and i2c differ
Attribute	Formance	i2c
Starting price	Free	On request
Pricing model	Open source, no licence fee	quote
Free tier	Yes	No
Platforms	Linux, Docker, Kubernetes, Web, API	Web, REST API

Identical on both: 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 Formance

Double-entry ledger
Numscript transaction DSL
Payments connectivity
Reconciliation
Self-hosted deployment
Cloud offering
API and SDKs

Only in i2c

Configurable product engine
Credit and instalments
Fraud and risk tooling
Digital banking front ends
Global scheme connectivity

Both cover

Multi-currency

What people use each for

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

Formance

A marketplace splitting a single customer payment between seller, platform fee and tax that needs the split to be atomic and auditablenot i2c
A fintech whose homegrown balances table produced numbers finance could not reconcile and now needs proper double-entry before an auditnot i2c
A payments team that wants one normalised model across several PSPs so reconciliation is not written separately for eachnot i2c
A company that wants its ledger under a licence it can keep running even if the vendor disappearsnot i2c

i2c

A bank wanting credit, debit and prepaid portfolios on one processor rather than threenot Formance
An issuer in a market where local scheme and currency support rules out US-centric processorsnot Formance
A programme manager launching instalment products without building a lending corenot Formance
A credit union replacing an ageing processor without writing custom code for product rulesnot Formance

Where each one falls short

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

Formance

Formance holds no money and provides no regulatory cover, so it must be paired with a payments provider or bank, and buyers occasionally mistake a ledger for a treasury system and discover the gap late.
Numscript is a domain-specific language your team must learn, and while it makes complex splits expressible it also means transaction logic sits outside the languages your engineers already debug well.
Self-hosting a ledger that must never lose or duplicate a transaction is a serious operational commitment covering backups, upgrades and Postgres tuning, which is real cost the zero licence fee hides.
Enterprise pricing is not published, so the difference between the free path and the supported path cannot be evaluated without a sales conversation.
The company is much smaller than the incumbent alternatives, and while the MIT licence protects the code it does not protect the roadmap, so features on the hosted side may arrive slowly or change direction.

i2c

Developer experience lags API-native competitors, and teams expecting Stripe-grade documentation and sandboxes find an enterprise integration project instead.
Implementations lean on i2c or partner professional services, so timelines and costs are set by a services queue rather than by your own engineering speed.
Pricing is per active card and per transaction with monthly minimums, none of it published, so comparing bids requires modelling your own portfolio carefully.
Configuration flexibility means product behaviour lives in platform settings rather than in your repository, which complicates version control, testing and audit trails.
As a private company with a broad global footprint, regional support depth is uneven, and a programme in a smaller market may get thinner service than a flagship account.

Pricing, plan by plan

Formance

Free

Open SourceFree
- MIT licensed core ledger
- Numscript transaction DSL
- Multi-currency tracking
Enterprise$undefined/year
- Managed or private deployment
- Payments connectivity and reconciliation
- Support with response commitments

i2c

On request

i2c processing platform$undefined/year
- Per-active-card and per-transaction processing fees
- Minimum monthly commitments by programme
- Implementation and configuration professional services

Which should you pick?

Choose Formance if

You need double-entry ledger.
You want to start without paying.
You work on Linux, Docker, Kubernetes, Web, API.
You also want numscript transaction dsl.

Formance review

Choose i2c if

You need configurable product engine.
You work on Web, REST API.
You also want credit and instalments.

i2c review

Questions people ask

Is Formance or i2c better?: Neither clearly leads. Formance starts at Free and i2c at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Formance or i2c?: Formance has a free tier; the other does not. Paid plans start at Free for Formance and On request for i2c.
Does Formance or i2c run on more platforms?: Formance runs on Linux, Docker, Kubernetes, Web, API. i2c runs on Web, REST API.
Can I use Formance for free?: Yes. Formance has a free tier, so you can try it without paying. i2c starts at On request.
What is Formance best used for?: Formance is most often used for a marketplace splitting a single customer payment between seller, platform fee and tax that needs the split to be atomic and auditable, a fintech whose homegrown balances table produced numbers finance could not reconcile and now needs proper double-entry before an audit, a payments team that wants one normalised model across several psps so reconciliation is not written separately for each, a company that wants its ledger under a licence it can keep running even if the vendor disappears. Of those, a marketplace splitting a single customer payment between seller, platform fee and tax that needs the split to be atomic and auditable and a fintech whose homegrown balances table produced numbers finance could not reconcile and now needs proper double-entry before an audit are not what i2c is typically brought in for.
What can Formance do that i2c cannot?: Formance covers Double-entry ledger, Numscript transaction DSL, Payments connectivity, Reconciliation. i2c covers Configurable product engine, Credit and instalments, Fraud and risk tooling, Digital banking front ends. Both handle Multi-currency.

Answered from the vendors’ own pages

Formance: Is Formance really open source?

Yes. The core ledger is MIT licensed with full source access and no deployment restrictions.

i2c: Does i2c issue the cards itself?

No. It processes; issuance sits with a bank or licensed issuer, and in most markets you need that relationship separately.

Formance: Does Formance move money?

No. It records and orchestrates movements; the actual payments happen at a PSP or bank you connect.

i2c: Can it handle revolving credit?

Yes. Credit, instalments and buy-now-pay-later sit on the same platform as debit and prepaid, which is unusual among modern processors.

Formance: What does the enterprise version cost?

Not published. It is an annual subscription quoted per customer.

i2c: Is it self-serve?

No. Expect a configuration-led implementation with professional services rather than signing up and calling an API.

Formance: Do I have to use Numscript?

Yes for anything beyond the simplest transfers. It is how multi-party transactions are expressed atomically.

Formance vs i2c

Formance

i2c

The short version

Where they differ

What each one covers

Only in Formance

Only in i2c

Both cover

What people use each for

Formance

i2c

Where each one falls short

Formance

i2c

Pricing, plan by plan

Formance

i2c

Which should you pick?

Choose Formance if

Choose i2c if

Questions people ask

Answered from the vendors’ own pages

Related pages

More on Formance

More on i2c

Keep looking

Other head to heads