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APIs · head to head

Increase vs Svix

Increase logo

Increase

APIs

Direct banking API for ACH, wires, real-time payments, accounts and cards

From
On request
Rated
-
Full reviewWebsite
Svix logo

Svix

APIs

Outbound webhook sending as a service, with retries, signing and a customer-facing portal

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Svix has a free tier, so it costs nothing to try first.
  • Each has a real cost: Increase the published per transaction rates exclude a monthly platform fee that Increase states varies by use case, so the transparent price page cannot produce a total cost and the material part of the deal is still negotiated privately.; Svix the Professional tier at 490 US dollars a month includes the same 50,000 messages as the free tier, so the upgrade buys SLA, throughput and retention rather than volume, which is a jarring step for a growing product.
  • They diverge on capability: Increase covers ACH origination and receipt, Svix covers Automatic retries.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Increase and Svix actually diverge.

Attributes where Increase and Svix differ
AttributeIncreaseSvix
Starting priceOn requestFree
Pricing modelquotePer month by message count
Free tierNoYes
PlatformsAPI, WebWeb, Cloud, Docker

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 Increase

  • ACH origination and receipt
  • Domestic wires
  • Real-time payments
  • Bank accounts
  • Cards
  • Cheques
  • Sandbox and simulations
  • Audit and reconciliation data

Only in Svix

  • Automatic retries
  • Payload signing
  • Consumer portal
  • Event types and filtering
  • Delivery logs and replay
  • Rate limiting
  • Static source IPs
  • Language SDKs

What people use each for

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

Increase

  • A payroll or treasury product that needs to originate same-day ACH and wires under its own control rather than through a payment processornot Svix
  • A marketplace that must hold seller balances in ledgered accounts with real account and routing numbersnot Svix
  • A fintech that wants FedNow and RTP payouts so recipients are paid outside banking hoursnot Svix
  • An engineering team that needs the underlying return codes and settlement timing visible in order to build correct reconciliation and retry logicnot Svix

Svix

  • A SaaS company adding webhooks to its API that does not want to build retry, signing and a customer debugging UI from scratchnot Increase
  • A payments or fintech product whose customers need signature verification libraries in several languages they did not writenot Increase
  • An engineering team drowning in support tickets from customers whose endpoints silently failed and who need self-service delivery logsnot Increase
  • A platform with a small number of very slow customer endpoints that must not delay deliveries to everyone elsenot Increase

Where each one falls short

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

Increase

  • The published per transaction rates exclude a monthly platform fee that Increase states varies by use case, so the transparent price page cannot produce a total cost and the material part of the deal is still negotiated privately.
  • Free allowances are deliberately small at ten account numbers and five physical cards, so any programme issuing accounts or cards at volume moves to quoted pricing almost immediately.
  • Banking is provided through partner banks, so programme approval, compliance obligations and the ability to launch at all depend on a bank relationship you do not control, and post-Synapse bank risk appetite has tightened considerably.
  • The API deliberately exposes payment rail mechanics rather than smoothing them, which is correct engineering but means a team without payments expertise will build reconciliation and return handling wrongly and only discover it when funds go astray.
  • Coverage is United States only, so a company with international payout needs runs a second provider and reconciles two ledgers, and the single API argument disappears at the first cross border customer.

Svix

  • The Professional tier at 490 US dollars a month includes the same 50,000 messages as the free tier, so the upgrade buys SLA, throughput and retention rather than volume, which is a jarring step for a growing product.
  • Only attempted messages count toward usage, but a customer with many subscribed endpoints multiplies a single event into many billable messages, and forecasting that fan-out before launch is difficult.
  • The open source server is MIT licensed but trails the hosted product in features, so self-hosting is a fallback position rather than a genuinely equivalent option.
  • Routing outbound customer traffic through a third party puts a vendor in the delivery path for events your customers may treat as contractual, which some security reviews will not accept.
  • Payload retention is 30 days on the free tier and 90 on Professional, so anyone needing longer delivery history for audit must pay for Enterprise or log independently.

Pricing, plan by plan

Increase

On request
  • Increase Platform$undefined/month
    • Monthly fee quoted by use case and not published
    • Next-day ACH origination listed at 0.50 US dollars per transaction
    • Same-day ACH origination listed at 2.00 per transaction

Svix

Free
  • FreeFree
    • 50,000 messages a month included
    • Overage at $0.0001 per message
    • 99.9% uptime SLA
  • Professional$490/month
    • 50,000 messages included, same as free
    • 99.99% uptime SLA
    • 800 messages per second
  • Enterprise$undefined/year
    • Custom volume and rate limits
    • 99.999% uptime SLA
    • Custom retention

Which should you pick?

Choose Increase if

  • You need ach origination and receipt.
  • You work on API, Web.
  • You also want domestic wires.
Increase review

Choose Svix if

  • You need automatic retries.
  • You want to start without paying.
  • You work on Web, Cloud, Docker.
  • You also want payload signing.
Svix review

Questions people ask

Is Increase or Svix better?
Neither clearly leads. Increase starts at On request and Svix at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Increase or Svix?
Svix has a free tier; the other does not. Paid plans start at On request for Increase and Free for Svix.
Does Increase or Svix run on more platforms?
Increase runs on API, Web. Svix runs on Web, Cloud, Docker.
Can I use Svix for free?
Yes. Svix has a free tier, so you can try it without paying. Increase starts at On request.
What is Increase best used for?
Increase is most often used for a payroll or treasury product that needs to originate same-day ach and wires under its own control rather than through a payment processor, a marketplace that must hold seller balances in ledgered accounts with real account and routing numbers, a fintech that wants fednow and rtp payouts so recipients are paid outside banking hours, an engineering team that needs the underlying return codes and settlement timing visible in order to build correct reconciliation and retry logic. Of those, a payroll or treasury product that needs to originate same-day ach and wires under its own control rather than through a payment processor and a marketplace that must hold seller balances in ledgered accounts with real account and routing numbers are not what Svix is typically brought in for.
What can Increase do that Svix cannot?
Increase covers ACH origination and receipt, Domestic wires, Real-time payments, Bank accounts. Svix covers Automatic retries, Payload signing, Consumer portal, Event types and filtering.

Answered from the vendors’ own pages

Increase: Does Increase publish its pricing?

Partly. Per transaction fees for ACH, wires, RTP, FedNow and cards are listed publicly. The monthly platform fee is not, and it is described only as varying by use case.

Svix: How much does Svix cost?

Free up to 50,000 messages a month; Professional starts at 490 US dollars a month with the same included volume but better SLA and throughput.

Increase: Who holds the deposits?

Partner banks, not Increase itself. That relationship determines your programme approval, your compliance obligations and your risk if the bank changes appetite.

Svix: Can I self-host it?

Yes, there is an MIT licensed server, but it lags the hosted service in features and has no SLA.

Increase: Is it international?

No. Increase covers United States rails only, so cross border payouts require a second provider.

Svix: What counts as a message?

Attempted or transformed deliveries. Retries and messages filtered out because no endpoint subscribed are not charged.

Increase: How is it different from a middleware BaaS platform?

It exposes the rails rather than abstracting them, showing real return codes and settlement timing. That suits teams who understand payments and punishes teams who do not.

Svix: Does it handle inbound webhooks?

Its focus is outbound sending on behalf of API providers, not receiving webhooks from third parties.

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