APIs · head to head
Formance vs Sila
Formance
APIs
Open source double-entry ledger and payment orchestration for money-moving software
- From
- Free
- Rated
- -
Sila
APIs
US money movement API for ACH, RTP and FedNow with KYC and ledgering built in
- From
- On request
- Rated
- -
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.; Sila no pricing is published, so you cannot compare Sila against Moov or Dwolla without entering two sales processes, and small programmes frequently find the monthly minimum dominates their cost at low volume.
- They diverge on capability: Formance covers Double-entry ledger, Sila covers ACH origination.
- Prices and features above were last checked on 31 August 2026.
Where they differ
Only the attributes on which Formance and Sila actually diverge.
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
- Multi-currency
- Payments connectivity
- Reconciliation
- Self-hosted deployment
- Cloud offering
- API and SDKs
Only in Sila
- ACH origination
- Instant rails
- KYC and KYB
- Virtual accounts
- Ledger
- Wallets and holds
- Webhooks
- Bank-side deployment
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 Sila
- A fintech whose homegrown balances table produced numbers finance could not reconcile and now needs proper double-entry before an auditnot Sila
- A payments team that wants one normalised model across several PSPs so reconciliation is not written separately for eachnot Sila
- A company that wants its ledger under a licence it can keep running even if the vendor disappearsnot Sila
Sila
- A small fintech that needs ACH, identity verification and a ledger from one vendor because it has no compliance team to assemble threenot Formance
- A marketplace paying out to sellers that wants same-day ACH and instant push options without becoming a money transmitter itselfnot Formance
- A community bank replacing batch file ACH processing with an API so it can offer real-time payments to business customersnot Formance
- A lending platform that must verify business identity, disburse funds and collect repayments on a schedule from a single integrationnot 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.
Sila
- No pricing is published, so you cannot compare Sila against Moov or Dwolla without entering two sales processes, and small programmes frequently find the monthly minimum dominates their cost at low volume.
- Sila is materially smaller and less well capitalised than the banking-as-a-service names it competes with, which matters because your customer funds and your payment rails depend on the vendor still trading in three years.
- The sponsor bank behind your programme determines what you can offer and how fast you can change it, and bank partnerships in this sector have been reshuffled repeatedly since 2023, so a bank change during your contract is a realistic risk rather than a theoretical one.
- Coverage is United States only, so any product with cross-border ambitions needs a second payments vendor and a second reconciliation process from the outset.
- Onboarding involves compliance diligence on your own programme, and teams routinely underestimate this, with weeks lost between signing and first live transaction while policies, flow of funds diagrams and BSA arrangements are reviewed.
Pricing, plan by plan
Formance
Free- Open SourceFree
- MIT licensed core ledger
- Numscript transaction DSL
- Multi-currency tracking
- Enterprise$undefined/year
- Managed or private deployment
- Payments connectivity and reconciliation
- Support with response commitments
Sila
On request- Sila Payments Platform$undefined/month
- ACH, RTP and FedNow
- KYC and KYB verification
- Virtual accounts and ledger
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.
Questions people ask
- Is Formance or Sila better?
- Neither clearly leads. Formance starts at Free and Sila at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Formance or Sila?
- Formance has a free tier; the other does not. Paid plans start at Free for Formance and On request for Sila.
- Does Formance or Sila run on more platforms?
- Formance runs on Linux, Docker, Kubernetes, Web, API. Sila runs on Web, API.
- Can I use Formance for free?
- Yes. Formance has a free tier, so you can try it without paying. Sila 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 Sila is typically brought in for.
- What can Formance do that Sila cannot?
- Formance covers Double-entry ledger, Numscript transaction DSL, Multi-currency, Payments connectivity. Sila covers ACH origination, Instant rails, KYC and KYB, Virtual accounts.
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.
Sila: Does Sila require a sponsor bank?
Yes. Funds sit at a partner bank, and which bank that is affects your product features and your regulatory exposure, so ask before signing.
Formance: Does Formance move money?
No. It records and orchestrates movements; the actual payments happen at a PSP or bank you connect.
Sila: Is Sila still operating?
Yes. It continues to trade and announced an API integration with GBank in 2025 covering ACH, RTP and FedNow.
Formance: What does the enterprise version cost?
Not published. It is an annual subscription quoted per customer.
Sila: What does it cost?
Sila does not publish rates. Expect per-transaction pricing plus a monthly minimum, quoted after a compliance conversation.
Formance: Do I have to use Numscript?
Yes for anything beyond the simplest transfers. It is how multi-party transactions are expressed atomically.
Sila: Can I use it outside the United States?
No. Sila covers US rails only.
Related pages
Other head to heads
- Formance vs Moov
- Formance vs Column
- Formance vs Convoy
- Formance vs Increase
- Formance vs Yapily
- Formance vs 10x Banking
- Formance vs Tribe Payments
- Formance vs Dwolla
- Formance vs Kong
- Formance vs Tyk
- Formance vs Volt
- Formance vs Enable Banking
- Formance vs Flybits
- Formance vs i2c
- Formance vs KeystoneJS
- Formance vs Liveblocks
- Formance vs Astra
- Formance vs Griffin
- Formance vs Lithic
- Formance vs Treasury Prime
- Formance vs Unit
- Formance vs Weavr
- Formance vs Solaris
- Formance vs Parse Server
- Formance vs Paw
- Formance vs Paymentology
- Formance vs Q2 Digital Banking
- Formance vs Stainless
- Sila vs Moov
- Sila vs Column
- Sila vs Convoy
- Sila vs Increase
- Sila vs Yapily
- Sila vs 10x Banking
- Sila vs Tribe Payments
- Sila vs Dwolla
- Sila vs Kong
- Sila vs Tyk
- Sila vs Volt
- Sila vs Enable Banking
- Sila vs Flybits
- Sila vs i2c
- Sila vs KeystoneJS
- Sila vs Liveblocks
- Sila vs Astra
- Sila vs Griffin
- Sila vs Lithic
- Sila vs Treasury Prime
- Sila vs Unit
- Sila vs Weavr
- Sila vs Solaris
- Sila vs Parse Server
- Sila vs Paw
- Sila vs Paymentology
- Sila vs Q2 Digital Banking
- Sila vs Stainless