FedNow vs RTP: Instant Payments for Invoices
FedNow vs RTP compared: who runs each instant payment network, limits, request for payment, fees and how small businesses can get invoices paid in seconds.
Quick answer: FedNow vs RTP comes down to who runs the network. RTP is operated by The Clearing House (live since 2017) and FedNow by the Federal Reserve (live since July 2023). Both move money between US bank accounts in seconds, 24/7, with final settlement, a $10 million network limit and request for payment. Your bank chooses which one it joins.
For invoicing, the real question is whether your client's bank and your bank share a network. This guide explains how the two instant payments systems work, how they compare with ACH and wires, how request for payment can replace chasing, and what to put on your invoice. When you are ready, add the payment instructions to an invoice in our US invoice generator.
What are instant payments?
Instant payments (also called real-time payments) are account-to-account transfers that clear and settle in seconds, at any hour, and cannot be reversed by the network once sent. The receiver gets usable funds immediately, and the sender gets confirmation that the payment went through. In the United States there are two interbank instant payment networks: the RTP network and the FedNow Service.
From a business point of view, "pay by bank" with instant settlement sits between ACH and wires. It is faster than ACH and works on weekends, and it is generally cheaper than a wire for the payer, although each bank sets its own customer pricing.
FedNow vs RTP at a glance
| Feature | RTP network | FedNow Service |
|---|---|---|
| Operator | The Clearing House, owned by large US banks | Federal Reserve Banks |
| Launched | November 2017 | 20 July 2023 |
| Availability | 24/7/365 | 24/7/365 |
| Settlement | Real-time, final and irrevocable | Real-time, final and irrevocable |
| Network transaction limit | $10 million (since 9 February 2025) | $10 million (since 12 November 2025) |
| Bank-set limits | Banks may set lower limits | Banks may set lower limits |
| Request for payment | Yes | Yes, optional feature since launch |
| Message standard | ISO 20022 | ISO 20022 |
| Interoperable with the other | No | No |
Limits and features change, so check the Federal Reserve's FedNow pages and The Clearing House for current details. Remember that the limit that applies to you is usually the lower one your own bank sets.
Which network suits which business?
You rarely get to choose the network directly; your bank does. In practice:
- If you bank with a large national bank, it is likely connected to RTP and may also be on FedNow.
- If you bank with a community bank or credit union, FedNow is often the more likely route, sometimes alongside RTP through a processor.
- If your clients are large corporates, their treasury platforms may already send RTP or FedNow credits for urgent supplier payments.
- If your clients are consumers, they will usually see instant payments as a "send now" or "pay instantly" option in their banking app rather than a network name.
The practical test is simple: ask your bank which networks your account can receive on, and ask big clients which networks their bank sends on.
What are RTP and FedNow?
The RTP network
RTP is a private-sector network run by The Clearing House, the company behind the CHIPS large-value system and one of the two ACH operators. It launched in November 2017 and was the first new US core payments rail in decades. Large banks were early participants, and many smaller banks and credit unions connect through processors. RTP raised its per-transaction limit from $1 million to $10 million in February 2025, aimed largely at business-to-business, real estate and supply-chain payments.
The FedNow Service
FedNow is the Federal Reserve's instant payment service, launched on 20 July 2023. Because the Fed already provides services to thousands of community banks and credit unions, FedNow was designed to bring instant payments to institutions of every size. Its network limit started at $500,000, rose to $1 million in mid-2025 and then to $10 million from 12 November 2025, matching RTP.
Both networks use the ISO 20022 messaging standard, which carries richer remittance information than older formats. That matters for invoicing: an instant payment can include the invoice number and other details, which makes matching payments to invoices easier for you and your accounting software.
How instant payments work for an invoice
- You confirm your bank can receive FedNow, RTP or both on your business account. Many banks receive before they offer sending.
- You issue the invoice with your routing and account number and a note that instant payment is accepted.
- The client initiates payment in their online banking or treasury platform, choosing an instant option if their bank offers one.
- The networks move the money between the two banks in seconds.
- You see the funds and the reference, which should include your invoice number, and you mark the invoice paid.
Request for payment: invoices that can be paid with one tap
Request for payment (RfP) lets a business send a payment request through the network to the payer's bank. The payer sees it in their banking app, reviews it, and approves an instant credit transfer. The request can carry invoice details and a due date, so payment and remittance data travel together. Both networks support RfP, but your bank and your client's bank must offer it, and adoption is still growing. Ask your bank whether it supports sending requests for payment for business accounts.
Here is how a request for payment could replace a reminder email. You invoice a client $3,200.00 on Net 15 terms. On the due date, instead of emailing a reminder, your bank sends a request for payment for $3,200.00 carrying the invoice number. The client's accounts team sees it in their banking portal, checks it against the invoice and approves it; the money arrives seconds later with the reference attached. If they decline or ignore it, you follow up as usual with our payment reminder emails. Note that a request for payment never pulls money from the payer's account; the payer always has to approve it.
FedNow and RTP vs ACH vs wire transfer
| Method | Speed | Hours | Reversible? | Typical use |
|---|---|---|---|---|
| Standard ACH | Usually 1-2 business days | Business days | Limited returns possible | Payroll, recurring bills, low-urgency invoices |
| Same Day ACH | Same business day if submitted in time | Business days, set windows | Limited returns possible | Urgent but not instant payments |
| Wire (Fedwire) | Same day, usually within hours | Business days, set hours | Final | Large or time-critical payments |
| RTP / FedNow | Seconds | 24/7/365 | Final | Time-sensitive invoices, weekend payments, payouts |
Same Day ACH has a per-payment limit of $1 million under Nacha rules, so for large urgent payments outside business hours, instant payments are now the only domestic option that settles immediately. For a deeper look at the two older rails, read ACH vs wire transfer.
Worked example: getting paid on a Friday night
You finish a job and invoice $8,500.00 at 6 pm on a Friday, due on receipt. Your client approves it at 7 pm.
- Standard ACH: submitted Friday evening, processed from Monday, likely available Monday or Tuesday. That is roughly three to four calendar days with $8,500.00 outstanding.
- Wire: cannot be sent until Fedwire opens on Monday.
- RTP or FedNow: if both banks are on the same network, the $8,500.00 is in your account by 7:01 pm Friday.
If you were planning to cover $6,000.00 of supplier costs over the weekend, instant settlement removes the need to dip into a credit line. That is the cash-flow argument for instant payments; see our guide to cash flow management for the wider picture.
Instant payment fees for businesses
The Federal Reserve and The Clearing House charge participating banks per transaction, but your price is set by your bank. Some banks offer free incoming instant payments and charge for outgoing ones; others bundle them into treasury packages. Before promoting instant payments on your invoices, ask your bank:
- Is receiving RTP and FedNow payments free on my account?
- What is my per-transaction limit, and can it be raised?
- Can I send requests for payment, and what does each cost?
- How does remittance information, such as the invoice number, appear on my statement?
How to add instant payment details to your invoice
Instant payments use the same routing and account numbers as ACH, so the change to your invoice is small. In the payment section, list:
- Bank name, account name, routing number and account number. Our guide to bank details on an invoice shows the layout.
- A line such as "Instant payments accepted via RTP and FedNow."
- The invoice number to quote as the payment reference.
- A real due date. With instant rails, "due on receipt" becomes realistic; see invoice payment terms.
- Alternatives such as card or a pay-now link for clients whose banks are not on either network.
Fraud and safety: instant means final
Because instant payments are irrevocable, fraudsters like them. The common trick for small businesses is a fake "change of bank details" email that appears to come from you, sent to your client. Protect yourself and your customers:
- Tell clients on every invoice that your bank details will never change by email alone.
- Confirm any change of payee details by phone using a number you already have.
- Use multi-factor authentication on email and banking.
- Learn the warning signs in our guide to invoice scams.
Common mistakes with instant payments
- Assuming every bank can send instant payments. Many can only receive.
- Advertising instant payments without checking your own account is enabled.
- Forgetting the bank-set limit, which may be far below $10 million.
- Not asking clients to include the invoice number, which makes reconciliation harder.
- Dropping ACH entirely; it is still cheaper for routine payments.
Checklist: is your business ready for instant payments?
- Bank confirms your account can receive RTP, FedNow or both.
- You know your limits and fees for receiving and sending.
- Invoice shows routing and account numbers and states instant payment is accepted.
- Clients know to quote the invoice number.
- Bank-detail change policy is written on the invoice.
- Alternative payment options are listed for clients outside both networks.
Next step: send an invoice that can be paid in seconds
Create your invoice in the US invoice generator, add your bank details and an "instant payments accepted" line, and download the PDF. If you work with clients abroad, instant domestic rails will not help; compare stablecoin payments and traditional international options instead.
Frequently asked questions
Can a FedNow bank send money to an RTP-only bank?
Not directly. FedNow and RTP are separate networks and are not interoperable, so both banks need to be on the same network for an instant transfer to go through. Many larger banks connect to both. If your client's bank and yours share no network, the payment falls back to ACH or a wire.
Are instant payments available on weekends and holidays?
Yes. Both FedNow and RTP run 24 hours a day, 7 days a week, every day of the year, and funds are available to the receiver within seconds. That is the main difference from ACH and Fedwire, which only settle on business days.
Do I need new bank details to receive instant payments?
Usually not. Instant payments in the US use your normal routing number and account number. What matters is whether your bank and that specific account are enabled to receive FedNow or RTP payments. Ask your bank, then tell clients on the invoice that instant payment is accepted.
Is Zelle the same as RTP or FedNow?
No. Zelle is a consumer and small-business payment service owned by a group of banks. It uses its own rules and limits set by each bank, and it typically identifies people by email or phone number. RTP and FedNow are interbank networks that banks plug many products into, including business payments and request for payment.
What happens if a client sends an instant payment to the wrong account?
Instant payments are final once sent, so the network will not reverse them. The sender must ask their bank to request a return from the receiving bank, and the receiver can agree or refuse. This is why you should confirm bank details carefully and treat any request to change payment details as a possible scam.
Will instant payments replace ACH?
Not soon. ACH remains cheaper and well suited to batch payroll, recurring bills and low-urgency vendor payments. Instant payments suit time-sensitive invoices, weekend payments and cases where certainty of final settlement matters. Most businesses will use both.
How can I check whether my bank is on FedNow?
The Federal Reserve publishes a downloadable list of financial institutions live on the FedNow Service, with their routing numbers, on its FedNow participants page. The Clearing House publishes participant information for RTP. A listed bank may only receive, not send, and may not enable it on every account, so ask your bank directly whether your business account can receive instant payments and at what limit.
Can international clients pay me through FedNow or RTP?
Not directly. Both networks move US dollars between accounts at participating US financial institutions. A client abroad would need to pay by international wire, a cross-border payment provider or card, and while some providers may use instant rails for the final US leg, you won't usually see that. For foreign clients, list an international payment option on the invoice alongside your US bank details.
Is pay by bank the same as FedNow or RTP?
Not exactly. Pay by bank is a checkout or invoice payment option that lets a customer pay straight from their bank account instead of by card. Behind the scenes it may run on ACH, which takes a day or more, or on an instant network like RTP or FedNow, depending on the provider and the banks involved. If speed matters, ask your provider which rail it uses and when funds become available.
Are business accounts protected if an instant payment is fraudulent?
Less than consumer accounts. Regulation E's protections for unauthorized electronic transfers apply to consumer accounts, so business accounts mostly rely on the bank's account agreement. Payments you authorized yourself, even if a scammer tricked you, are generally not reversible. Ask your bank about payee confirmation, limits and alerts, and verify any change of bank details by phone before sending money.
Invoice Creator Editorial Team
Guides on invoicing, cash flow and small-business finance from Invoice Creator, operated by Next Software Development Company. Content is reviewed for accuracy against the fields our own invoice generator produces.
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