Payments - Introduction / Learning brief
Payment market infrastructures
Your notes
In simple terms / 01
What this means in plain language
A tour of the interbank systems that clear and settle payments — TARGET2 and EURO1 in Europe, Fedwire, CHIPS and FedNow in the United States, and CHAPS in the United Kingdom — and how real-time gross settlement differs from net settlement.
When a bank accepts a payment destined for another bank's customer, the two banks need shared machinery to exchange the instruction and move the money. That machinery is a payment market infrastructure: a system, usually overseen or operated by a central bank, that many institutions connect to so they do not each build a private link to every other bank. Two designs dominate. A real-time gross settlement (RTGS) system settles each payment on its own, immediately and finally, in central bank money. A net system lets obligations accumulate, offsets what banks owe each other, and settles only the difference at set times or continuously. Most countries run several infrastructures side by side — one for high-value and time-critical payments, others for retail batches and instant transfers. Naming the main systems and knowing which design each uses is the quickest way to read how a country's payments actually move between its banks.
Complete lesson / 02
Understand the full idea, step by step
Fedwire. CHAPS. T2. CHIPS. FedNow. The names surface in job descriptions, incident reports, and news stories as if everyone already knows them. Each one is a payment market infrastructure — a shared system banks connect to so they can settle with every counterpart without a private arrangement for each. Learn five names and one question to ask of each, and a whole layer of the industry becomes readable.
What an infrastructure is
A payment market infrastructure sits between the scheme above it — the rulebook — and the banks' own systems below. It is the machinery many institutions share to exchange instructions and settle the resulting obligations, and it is usually operated or overseen by a central bank, because its failure would ripple across the whole economy. The defining question to ask of any infrastructure is not its name but its settlement design: does it settle each payment individually, or does it offset obligations and settle differences?
Real-time gross settlement (RTGS) — settlement of each accepted instruction individually, immediately, and finally, in central bank money
An RTGS system settles accepted payment instructions one at a time, without prior netting — each payment moves in full across accounts at the central bank the moment it settles, and from that moment it is final. Each instruction is still exchanged, validated, and accepted before it settles, so clearing still happens; what RTGS removes is the netting and the waiting, not the checking. The price is liquidity: every payment needs funds available at the moment it settles.
| System | Operator | Currency | Settlement design | Operating pattern |
|---|---|---|---|---|
| T2 | Eurosystem (central banks of the euro area) | EUR | RTGS — gross, payment by payment | Business days, defined operating windows |
| Fedwire Funds Service | Federal Reserve | USD | RTGS — gross, payment by payment | Business days, long operating hours |
| CHIPS | The Clearing House (private) | USD | Continuous offsetting against prefunded balances; released payments are final same day | Business days |
| FedNow | Federal Reserve | USD | Instant — each payment settles individually and finally | Around the clock, every day |
| CHAPS | Bank of England | GBP | RTGS — gross, payment by payment | Business days |
Reading the table
Notice how the names sort themselves once you ask about settlement. T2, Fedwire, and CHAPS are the classic high-value RTGS systems: each run by (or, in CHIPS's contrast, alongside) a central bank, each settling gross in central bank money, each the rail for payments that must be final on arrival. CHIPS takes the other road for large-value dollars — it continuously offsets payments against balances participants prefund, so a large gross value settles with far less money actually moving. FedNow applies the gross, per-payment idea to everyday transfers and keeps it running around the clock. Neither design is simply better, which is exactly why most large economies run several systems side by side.
Why would one country run several of these at once?
Because the trade-offs pull in different directions. A margin call needs finality now and justifies the liquidity cost of gross settlement. A million small payments need liquidity efficiency or round-the-clock availability more than they need individual settlement during business hours. Rather than force every payment through one design, a jurisdiction points high-value flows at its RTGS, bulk flows at netting arrangements, and everyday instant flows at a service built for them — and lets banks route each payment to the machine that fits.
COMMON CONFUSION
“SWIFT belongs on the list — it is one of the big settlement systems.”
SWIFT is a secure messaging network and a standards body, not a settlement system. It carries instructions to and between banks and infrastructures, but no account balances change on SWIFT's books. Several of the systems above use SWIFT messaging as their transport; the settlement itself happens on the books of a central bank or of the infrastructure's prefunded arrangement.
STRICTLY SPEAKING
Strictly speaking, each of these systems has its own calendar, cut-off times, membership tiers, liquidity tools, and legal framework, and all of these change over time — T2 itself is the consolidated successor of an earlier platform generation. Operating hours in the table are deliberately qualitative; when a real deadline matters, the operator's current documentation is the reference, not a lesson.
REMEMBER IT
For any infrastructure, ask four questions: who operates it, whose money settles, gross or net, and when does it run. Operator, money, model, hours — the answers place any system in the world on the map.
FOR NOW, REMEMBER
- A payment market infrastructure is shared interbank machinery, usually central-bank operated or overseen, sitting between the scheme rulebook and the banks.
- T2, Fedwire, and CHAPS settle gross, payment by payment, final in central bank money; CHIPS continuously offsets large-value dollars against prefunded balances.
- FedNow extends per-payment finality to everyday transfers, around the clock.
- Countries run several infrastructures in parallel because no single settlement design fits high-value, bulk, and instant flows at once.
TRY IT YOURSELF
A US bank must send USD 8,500,000.00 to another bank; the beneficiary insists the funds be final and usable the moment they arrive, during business hours. Separately, a customer wants to send USD 300.00 to a friend on a Sunday night. Which pairing fits?
You can now name the machines and their designs. Next, the designs themselves go under the microscope: what gross and net settlement each cost, each risk, and each make possible.
KEEP GOINGKey takeaways / 03
Three things to remember
- 01
A payment market infrastructure is shared interbank machinery, usually central-bank overseen, for exchanging instructions and settling the resulting obligations.
- 02
Real-time gross settlement settles each payment individually and finally; net systems offset obligations and settle only the difference.
- 03
Most jurisdictions run several infrastructures at once, divided by value, speed, and purpose rather than using a single system.
Practical use cases / 04
Where you would use this
A bank treasury team routes a payment through a particular infrastructure based on its value, urgency, and the settlement certainty the beneficiary needs.
A payments architect maps which systems a new product must reach so that every intended beneficiary bank is reachable.
A central bank or overseer assesses a systemically important infrastructure against international principles for its safety and resilience.
Worked example / 05
Put the idea into a real situation
Illustrative example: a fictional bank, Meridian Trust, must send two euro payments on the same morning. The first is a EUR 4,000,000.00 property completion that cannot wait and must be irrevocable on arrival, so it goes through a real-time gross settlement system and settles in central bank money within minutes, consuming EUR 4,000,000.00 of the bank's intraday liquidity. The second is a batch of 12,000 salary payments averaging EUR 1,850.00 each; these are not urgent, so they travel through a net system that offsets them against incoming collections and settles a single net figure at the day's settlement cycle. The same bank used two different infrastructures within one hour, choosing each by the value and urgency of the payment rather than by habit.
Operational sequence / 06
Follow the message and decision path
This compact sequence is a learning model. Exact routing and rulebook behavior can vary by scheme, participant, and implementation.
Read the steps as text
- 01MessageBank Alfa submits the payment to T2Bank Alfa (sending bank) → TARGET2 (T2) · pacs.009
Bank Alfa's payments desk sends a high-value interbank payment (a pacs.009) to TARGET2, which processes it the instant it arrives rather than batching it for a later cycle. Nothing has moved yet — it is an instruction.
- 02ProcessingT2 checks Bank Alfa's available liquidityTARGET2 (T2)
TARGET2 checks whether Bank Alfa's RTGS account holds enough available liquidity — drawing on the Central Liquidity Management (CLM) component — to cover the full amount before it settles anything.
- 03SettlementT2 settles the payment in central-bank moneyBank Alfa (sending bank) → Nordbank (receiving bank)
With liquidity confirmed, T2 debits Bank Alfa's account and credits Nordbank's account at the central bank, one payment at a time. RTGS settles each accepted instruction individually, without any prior netting, and the transfer is final the instant it settles.
- DR Bank Alfa's RTGS account at the central bank — EUR 2,000,000.00
- CR Nordbank's RTGS account at the central bank — EUR 2,000,000.00
- 04MessageNordbank is confirmed of the settled paymentTARGET2 (T2) → Nordbank (receiving bank)
TARGET2 tells the receiving bank that the funds are on its account at the central bank and are final, with the details of the payment it needs to apply.
- 05PostingNordbank books the incoming fundsNordbank (receiving bank)
Because the interbank leg already settled with finality, Nordbank records the credit on its own ledger without waiting for anything else. The payment is complete end to end.
- CR Incoming settlement account at Nordbank — EUR 2,000,000.00
Read the steps as text
- 01MessageRiya instructs an instant paymentRiya (customer) → Bank Alfa (sending bank)
Riya asks Bank Alfa to send USD 300.00 to Arjun on a public holiday. FedNow runs 24/7/365, so there is no cut-off or waiting for a business day — but nothing has moved yet, this is only a request.
- 02ProcessingBank Alfa checks its master account and screensBank Alfa (sending bank)
Bank Alfa validates the payment, screens it for sanctions in real time, and confirms it holds enough prefunded balance in its Federal Reserve master account to cover the outgoing amount. On an instant rail these checks must finish in seconds.
Screening checkpoint: Real-time outbound screening — An instant payment settles with finality and cannot be recalled, so screening happens before the payment is submitted — there is no batch window to catch it later.
- 03MessageBank Alfa submits the payment to FedNowBank Alfa (sending bank) → FedNow (Federal Reserve)
The sending bank sends the payment message to the FedNow Service, which processes it the instant it arrives rather than batching it. The message asks for settlement; it does not itself carry the money.
- 04MessageNordbank confirms it can credit ArjunNordbank (receiving bank) → FedNow (Federal Reserve)
FedNow asks the receiving bank whether it can apply the payment to Arjun's account. Nordbank checks the account and answers positively — this confirmation is what lets settlement proceed.
- 05SettlementFedNow settles the payment individually and finallyBank Alfa (sending bank) → Nordbank (receiving bank)
On the positive answer, the Federal Reserve debits Bank Alfa's master account and credits Nordbank's master account for this one payment, in central-bank money. Settlement is immediate, gross (one payment at a time, no netting), and irrevocable.
- DR Bank Alfa's master account at the Federal Reserve — USD 300.00
- CR Nordbank's master account at the Federal Reserve — USD 300.00
- 06PostingBank Alfa debits Riya's accountBank Alfa (sending bank)
With the interbank leg settled in central-bank money, Bank Alfa books the final debit against Riya's account. Because her bank had prefunded the master account, there was no credit risk in getting here.
- DR Riya's account at Bank Alfa — USD 300.00
- 07PostingArjun is credited and can spend at onceNordbank (receiving bank)
Because the settlement across the master accounts is already final, Nordbank credits Arjun immediately and he can use the money within seconds — even on a holiday, unlike a batch ACH transfer that would settle on a later business day.
- CR Arjun's account at Nordbank — USD 300.00
Evidence & review / 07
Evidence & review
Named systems: T2 (euro area), Fedwire Funds Service, CHIPS, FedNow (United States), CHAPS (United Kingdom); descriptions reflect each operator's published service model
What this brief simplifies: Operating hours, calendars, cut-offs, membership tiers, and liquidity tools are described qualitatively; each system's current documentation governs the specifics. EURO1 and other net systems are left to later lessons.
Sources for this brief6
- Market practice
TARGET Services ↗ — European Central Bank · T2 service description
T2 replaced TARGET2 in March 2023. Detailed user functional specifications are published separately in the ECB's professional-use documents section.
- Market practice
Fedwire Funds Service ↗ — Federal Reserve Financial Services · Fedwire Funds Service and FedNow descriptions
The Fedwire Funds Service completed its ISO 20022 implementation on 14 July 2025.
- Market practice
CHIPS ↗ — The Clearing House · CHIPS settlement model
CHIPS migrated to ISO 20022 messaging in April 2024; participant rules are not fully public.
- Market practice
CHAPS ↗ — Bank of England · CHAPS service description
The Bank of England has operated CHAPS directly since November 2017; participant-facing reference documents are published separately.
- Official requirement
Principles for financial market infrastructures ↗ — CPMI and IOSCO (Bank for International Settlements) · Oversight expectations for systemically important payment systems
Published by the CPSS (now CPMI) and IOSCO; contains 24 principles plus responsibilities for authorities. This site uses it only for high-level concepts such as settlement finality.
- Simplified educational illustration
Payments Signal editorial teaching models — Payments Signal · Routing scenario and four-question framework
Used wherever diagrams, scenarios, figures, or example values are didactic constructions rather than sourced facts; every such use carries a simplifications disclosure. All people, companies, banks, and list entries in examples are fictional.