Finance Index
What are RTP and FedNow - and what's the difference between them?
Reference guide to rtp fednow b2b payments, including payment timing, method choices, control points, reconciliation, and vendor communication.
RTP is The Clearing House's real-time payment network (live since 2017); FedNow is the Federal Reserve's instant payment service (live since 2023). Both settle payments in seconds, 24/7/365, with immediate finality. They differ in operator, bank participation, and limits - RTP supports larger transactions, while bank adoption of each network is still expanding.
At a Glance
| Aspect | Short Answer | Why It Matters |
|---|---|---|
| RTP | RTP is The Clearing House's real-time payment network (live since 2017); FedNow is the Federal Reserve's instant payment service (live since 2023). | Reduces payment errors, timing issues, and reconciliation cleanup. |
| Payment impact | Controls must move entirely pre-release: there is no float, no batch window to catch errors, and no return process to lean on. | Keeps evidence clear and reduces control risk. |
| Related terms | Instant rails settle in seconds with finality at modest cost; same-day ACH settles in hours at low cost with limited reversal rights; wires settle in hours with finality at the highest cost. | Reduces payment errors, timing issues, and reconciliation cleanup. |
| The transaction limits on RTP | RTP supports payments up to $10 million; FedNow supports up to $1 million - and individual banks often set lower customer limits on both. | Reduces payment errors, timing issues, and reconciliation cleanup. |
| Real-time payments irrevocable | Yes, settlement is final. | Reduces payment errors, timing issues, and reconciliation cleanup. |
What changes for AP when payments become instant and irrevocable?
Controls must move entirely pre-release: there is no float, no batch window to catch errors, and no return process to lean on. That means stronger beneficiary verification, dual approval on instant rails, and treating instant payments as wire-equivalent in your control matrix - not ACH-equivalent.
Are RTP and FedNow available for b2b AP payments today?
Yes, where both banks participate - coverage is broad and growing, but you must confirm your bank originates and the vendor's bank receives on the relevant network.
Rtp/fednow vs same-day ACH vs wire - compared?
Instant rails settle in seconds with finality at modest cost; same-day ACH settles in hours at low cost with limited reversal rights; wires settle in hours with finality at the highest cost. Reversibility: effectively none on instant rails and wires, narrow on ACH.
What are the transaction limits on RTP and FedNow?
RTP supports payments up to $10 million; FedNow supports up to $1 million - and individual banks often set lower customer limits on both.
Are real-time payments irrevocable - what if we send one in error?
Yes, settlement is final. Your bank can send a request for return of funds, but recovery depends on the receiver. Prevention, not remediation, is the control.
How do I find out if a vendor's bank can receive RTP or FedNow?
Your bank or payment provider can check network participation by routing number; both networks publish participating institution lists.
Should we add real-time payments to our AP toolkit now or wait?
Add them for the use cases that earn their finality - true emergencies, COD-style releases, off-hours payments - while keeping ACH as the default. There's little reason to route routine payables instantly.
Do RTP payments settle on weekends and holidays?
Yes - both RTP and FedNow operate 24/7/365, which is one of their genuine advantages over ACH and wires.
What is request for payment (RFP) on the RTP network?
A standardized payment request a biller sends through the network that the payer can approve to trigger an instant payment; relevant to AP mostly as an emerging way vendors may present invoices for instant settlement.
Stampli perspective
Stampli's control model - segregation of invoice and payment approval, pre-payment validation, and amount-based approval rules - is rail-agnostic by design: the faster and more final the rail, the more the value sits in checks that happen before money moves.