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Domestic Payment Schemes in the UK – Part 3

Plain-language lessonContributor: Pradyumna Acharya
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In simple terms / 01

What this means in plain language

Compares how Bacs, CHAPS, and Faster Payments operate, including their use cases, submission windows, and settlement behavior.

The UK's main account-to-account schemes serve different needs. Bacs is commonly associated with scheduled, high-volume payments such as payroll and collections. CHAPS supports urgent, high-value transfers with settlement designed for finality. Faster Payments supports rapid retail and business transfers, subject to participant and product rules. The right choice depends on urgency, value, availability, cost, reach, reversibility, and operational controls. Product labels offered by a bank may not exactly match the underlying scheme, so teams should confirm the actual route and current operating rules.

Complete lesson / 02

Understand the full idea, step by step

A customer watches money leave in seconds and calls the payment done. Between the banks, the real question is different: when exactly are Bank Alfa and the other bank square with each other? For each UK scheme the answer is different — and that difference is the settlement view, the layer this lesson adds.

Two families of settlement

Every interbank payment ends the same way: balances move between accounts the banks hold at the Bank of England, the one book they all trust. What differs is when and in what shape. In gross settlement, each payment settles individually, one by one, as it happens. In net settlement, the system first accumulates many payments, offsets what banks owe each other in both directions, and settles only the differences at scheduled moments. The UK uses both — deliberately.

Real-Time Gross Settlement — RTGS

Settlement of each accepted payment individually, in real time, in central bank money, with no prior netting. CHAPS is the UK's RTGS-settled scheme: every CHAPS payment moves value across the sending and receiving banks' accounts at the Bank of England as it is processed, and is final and irrevocable at that moment. Note what RTGS does not mean: it does not mean "no clearing" — instructions are still exchanged, validated, and often queued; they are simply settled one at a time rather than netted first.

One CHAPS payment, settlement first

  1. INSTRUCTION

    Asha Traders instructs Bank Alfa: GBP 850,000.00 to the solicitor's account at Meridian Bank, today.

  2. VALIDATION

    Bank Alfa validates and screens the payment, and checks its own liquidity position — a gross settlement of this size needs funds available at the central bank.

  3. MESSAGE

    Bank Alfa submits the payment message into CHAPS. If liquidity is tight, the payment may queue until funds are in place.

  4. SETTLEMENT

    The Bank of England debits Bank Alfa's account and credits Meridian Bank's account on its own books — this single payment, in full, right now. Settlement is final.

  5. LEDGER

    Meridian Bank, now holding the value, credits the solicitor's client account.

  6. NOTIFICATION

    Confirmations flow back; the completion can proceed the same day, on settled money.

Settlement accounts at the Bank of England (simplified)
AccountDrCr
Bank Alfa — settlement accountGBP 850,000.00
Meridian Bank — settlement accountGBP 850,000.00

Illustrative two-entry view of the RTGS settlement leg only. Real RTGS accounting involves liquidity facilities, queuing, and intraday credit arrangements that this teaching view omits.

Deferred Net Settlement — DNS

Clearing first, settlement later. Bacs and Faster Payments both exchange and process individual payments continuously or in files, while the scheme keeps a running score of what each member owes every other member. At scheduled points, those positions are offset — payments flowing both ways cancel out — and only each member's net position settles across the accounts at the Bank of England. Bacs settles on its multi-day cycle; Faster Payments nets and settles several times each business day.

The Faster Payment credited the Nordbank customer on Saturday at 23:10 — but the banks only settle later. Who carries the gap?

The beneficiary's bank does: it hands out money before it has received the settlement. That gap is a credit exposure, and the scheme does not leave it to trust. Each member's net sender position is capped, and the exposure is backed by funds the members set aside at the Bank of England in advance — so if a member failed before a settlement cycle, the money to settle its position is already there. The customer experience is instant; the risk management underneath is what makes that safe to offer.

The settlement view of the three schemes
CHAPSFaster PaymentsBacs
Settlement modelRTGS — gross, per paymentDeferred netDeferred net
Interbank finalityImmediately, payment by paymentAt each netting cycle in the dayOn the scheduled settlement day
Speed to the customerSame business dayTypically seconds, 24/7On the cycle's credit day
Settles acrossBank of England accountsBank of England accountsBank of England accounts

COMMON CONFUSION

“If the customer got the money fast, the banks must have settled fast too.”

Customer speed and interbank settlement run on separate clocks. Faster Payments is instant for the customer yet settles net, later, between the banks; CHAPS is same-day for the customer precisely because settlement itself is immediate. Reading a scheme means reading both clocks — which is exactly what Maya's reconciliation does.

STRICTLY SPEAKING

Strictly speaking, the operational parameters here — how many settlement cycles Faster Payments runs each day, the Bacs timetable, the size of prefunded positions, and the Bank of England's RTGS service itself — are set by current scheme and central bank documentation and have all changed over time, including through the RTGS renewal programme. Treat the models in this lesson as stable; treat every number as something to look up.

APPLIES TO: UK domestic sterling schemes settling at the Bank of England

Sources for this section2
  1. Scheme-specific rule

    CHAPS ↗ — Bank of England · CHAPS settlement in RTGS; renewal programme

    Describes CHAPS, the UK's sterling high-value payment system, settled payment by payment in the Bank of England's RTGS infrastructure. · Checked 2026-07-12

    The Bank of England has operated CHAPS directly since November 2017; participant-facing reference documents are published separately.

  2. Market practiceMarch 2003 edition

    A glossary of terms used in payments and settlement systems ↗ — CPSS (now CPMI), Bank for International Settlements · RTGS, netting, and settlement finality definitions

    Standard definitions for payment, clearing, and settlement terminology used across BIS committee reports and referenced by glossary entries on this site. · Checked 2026-07-12

    Terminology has evolved since this edition; newer CPMI publications refine some definitions.

FOR NOW, REMEMBER

  • All three UK schemes settle across accounts at the Bank of England; what differs is when and in what shape.
  • CHAPS settles gross in real time — each payment individually, final at once. RTGS does not mean "no clearing"; it means no netting before settlement.
  • Bacs and Faster Payments settle deferred and net: positions accumulate, offset, and settle at scheduled moments.
  • A fast customer credit on a net rail means the beneficiary bank is briefly exposed — capped and prefunded by design, not left to trust.

TRY IT YOURSELF

At 23:10 on Saturday, a Nordbank customer receives a GBP 210.00 Faster Payment sent from Bank Alfa. Which statement about that moment is accurate?

Bank Alfa's and Nordbank's accounts at the Bank of England were debited and credited at 23:10, payment by payment.

Not this one — That describes RTGS — the CHAPS model. Faster Payments settles deferred and net: the interbank position from this payment waits for the next scheduled netting cycle.

The customer has the money, and the interbank obligation joins Nordbank's net position, to settle at the next cycle — an exposure capped and backed by prefunded funds at the Bank of England.

Correct — Exactly. Two clocks: the customer clock finished in seconds; the settlement clock runs to the scheme's netting timetable, made safe by position caps and prefunding.

The credit is provisional — the customer cannot safely spend it until the banks settle on Monday.

Not this one — The scheme is designed so the customer credit stands regardless of the later interbank cycle. The settlement risk sits between the banks and the scheme's prefunded arrangements, not on the customer.

The UK gave you one country's answer. The topic behind it generalises the trade-off — why any system must choose between settling every payment at once and netting them down, and what each choice costs in liquidity and risk.

KEEP GOING

Key takeaways / 03

Three things to remember

  1. 01

    Bacs, CHAPS, and Faster Payments solve different problems.

  2. 02

    Urgency, value, cost, and finality guide rail selection.

  3. 03

    Bank product names may hide the underlying scheme.

Practical use cases / 04

Where you would use this

USE CASE 01

A payroll team selects a bulk route for scheduled employee payments.

USE CASE 02

A solicitor requests an urgent high-value transfer for property completion.

USE CASE 03

A small business offers customers rapid account-to-account refunds.

Worked example / 05

Put the idea into a real situation

Illustrative example: a company has three needs on the same day: monthly payroll, an urgent property payment, and a customer refund. Its bank may route payroll through a bulk service, the property amount through a high-value real-time service, and the refund through a fast retail rail. Before submission, the company checks current cutoffs, limits, beneficiary details, costs, and contingency steps for each product.

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.

A CHAPS payment (UK sterling RTGS) — swimlane diagramA high-value sterling payment settles one-for-one across the banks' accounts at the Bank of England, in real time and with immediate finality — each payment settles on its own in central-bank money, with no netting and no waiting for a cycle. The full step-by-step description follows this diagram as text.
A CHAPS payment (UK sterling RTGS). One sterling payment settling gross. Real CHAPS operation depends on intraday liquidity management, the Bank of England's intraday liquidity facility, central-queue optimisation, and settlement windows across the whole business day. PLAY IT STEP BY STEP →
Read the steps as text
  1. 01Message
    Bank Alfa submits the CHAPS paymentBank Alfa (sending bank) → CHAPS · pacs.008

    Bank Alfa must pay a high-value sterling obligation — the completion monies on a property purchase — to Nordbank, so it sends an interbank payment (a pacs.008) into CHAPS. Since the ISO 20022 migration on 19 June 2023 the message carries richer structured data, including the Purpose Code and Legal Entity Identifier (LEI). Nothing has moved yet — it is an instruction.

  2. 02Processing
    CHAPS checks Bank Alfa's available liquidityCHAPS → Bank of England (RTGS)

    Before it settles anything, CHAPS checks whether Bank Alfa's settlement account in the Bank of England's RTGS infrastructure holds enough available liquidity to cover the full GBP 850,000.00 amount.

  3. 03Settlement
    The Bank of England settles the payment in central-bank moneyBank Alfa (sending bank) → Nordbank (receiving bank)

    With liquidity confirmed, the Bank of England debits Bank Alfa's settlement account and credits Nordbank's, one payment at a time. CHAPS settles each payment individually in central-bank money, without any prior netting, and the transfer is final the instant it settles.

    • DR Bank Alfa's settlement account at the Bank of England — GBP 850,000.00
    • CR Nordbank's settlement account at the Bank of England — GBP 850,000.00
  4. 04Message
    Nordbank is confirmed of the settled paymentCHAPS → Nordbank (receiving bank)

    CHAPS tells the receiving bank that the funds are on its settlement account at the Bank of England and are final, with the payment details — including the Purpose Code and LEI — it needs to apply.

  5. 05Posting
    Nordbank books the incoming fundsNordbank (receiving bank)

    Because the interbank leg already settled with immediate finality, Nordbank records the credit on its own ledger without waiting for anything else. The property completion is paid, end to end.

    • CR Incoming settlement account at Nordbank — GBP 850,000.00
Faster Payments (FPS) — swimlane diagramA pound transfer that reaches the payee within seconds, around the clock — but the banks settle their net positions in central bank money later, on a deferred cycle. Instant for the customer, deferred-net for the banks. The full step-by-step description follows this diagram as text.
Faster Payments (FPS). Faster Payments clears in real time but settles deferred-net at the Bank of England; this diagram shows a single settlement leg and abstracts the exact number of daily settlement cycles, plus the detailed CHAPS reroute mechanics. PLAY IT STEP BY STEP →
Read the steps as text
  1. 01Message
    Riya asks Bank Alfa to pay ArjunRiya (payer) → Bank Alfa (sending bank)

    On a Sunday evening Riya opens her banking app and instructs Bank Alfa to send GBP 500.00 to Arjun at Nordbank. Faster Payments runs 24/7, so time of day does not matter. Nothing has moved yet — this is only a request.

  2. 02Processing
    Bank Alfa checks the payment in real timeBank Alfa (sending bank)

    Bank Alfa validates the account details, confirms Riya has the funds, screens for sanctions, and checks the amount against the FPS single-payment limit and its own limits — all in seconds, because the customer is waiting.

    Screening checkpoint: Real-time transaction screening — Near-real-time rails force screening to be fast and automated — there is no overnight batch window to absorb the delay.

  3. 03Posting
    Bank Alfa debits RiyaBank Alfa (sending bank)

    Bank Alfa reduces Riya's balance by GBP 500.00 on its own books. The money has left Riya, but Arjun does not have it yet and the banks have not settled — those are separate steps.

    • DR Riya's current account at Bank Alfa — GBP 500.00
  4. 04Message
    The payment goes through Faster Payments in real timeBank Alfa (sending bank) → Faster Payments (Pay.UK)

    Bank Alfa submits the payment to the central Faster Payments infrastructure, which routes it to Nordbank immediately. This real-time clearing leg carries the instruction — it does not move central bank money.

  5. 05Message
    Nordbank receives the payment within secondsFaster Payments (Pay.UK) → Nordbank (receiving bank)

    Faster Payments forwards the payment to Nordbank in real time and expects a fast answer. The message tells Nordbank exactly whose account to credit and with how much.

  6. 06Posting
    Nordbank validates and credits Arjun within secondsNordbank (receiving bank)

    Nordbank checks the beneficiary account, screens the payment, and credits Arjun on its own books — all within seconds of Riya pressing send. Nordbank now owes this money and will recover it from Bank Alfa at settlement.

    • CR Arjun's current account at Nordbank — GBP 500.00
  7. 07Processing
    Arjun can spend the money immediatelyNordbank (receiving bank) → Arjun (payee)

    Arjun sees GBP 500.00 in his account and can spend it straight away, even though the banks have not yet settled between themselves. This gap — payee paid now, banks settled later — is the exposure Nordbank carries.

  8. 08Settlement
    Later, the banks settle their net positions at the Bank of EnglandFaster Payments (Pay.UK) → Bank of England (settlement)

    On a defined settlement cycle — after Arjun already has the money — Faster Payments calculates each bank's net position and the banks settle those net amounts in central bank money across their Bank of England settlement accounts. This is deferred net settlement, not payment-by-payment RTGS.

    FPS clears in real time but settles on a deferred, netted basis. Only one net figure per bank per cycle moves at the Bank of England — not GBP 500.00 on its own.

    • DR Bank Alfa net position at the Bank of England — GBP 500.00 (as part of the net cycle)
    • CR Nordbank net position at the Bank of England — GBP 500.00 (as part of the net cycle)
Bacs Direct Credit — swimlane diagramA UK Bacs Direct Credit pushes a salary payment from employer to employee through a fixed three-working-day batch cycle, where nothing moves until entry day. The full step-by-step description follows this diagram as text.
Bacs Direct Credit. One salary payment represents an entire Bacs batch file, and the diagram shows a single clean three-day cycle rather than the netting of many payments across all participating banks. PLAY IT STEP BY STEP →
Read the steps as text
  1. 01Message
    Day 1 — Asha Traders submits the Bacs payment fileAsha Traders (employer) → Bacs (Pay.UK) · Bacs Standard 18 payment file

    On Day 1 the employer sends its payroll file to Bacs through its bank. This is an instruction to pay, not money moving — it enters the fixed three-working-day cycle. Bacs is a batch system, so the file waits its turn.

  2. 02Processing
    Day 1 — Bacs validates and accepts the fileBacs (Pay.UK)

    Bacs checks the file's format and account details and accepts it into the current cycle. Acceptance means the payments are scheduled for the three-day rhythm — still no money has moved anywhere on Day 1.

  3. 03Clearing obligation
    Day 2 — Bacs processes the file and passes entries to the banksBacs (Pay.UK) → Nordbank (payee bank)

    On Day 2 Bacs sorts the file and passes each entry to the paying and receiving banks so they can prepare. These entries are obligations for the next day, not yet money — the banks know who will owe whom on entry day.

    Day 2 produces obligations, not funds. The banks now hold the entries and know what they must debit and credit on Day 3, but nothing has actually been paid.

  4. 04Settlement
    Day 3 — Interbank settlement in central bank moneyBank Alfa (payer bank) → Nordbank (payee bank)

    On Day 3, the entry day, the net obligations from the cycle settle across the banks' accounts at the Bank of England. Only now does money actually move between Bank Alfa and Nordbank in central bank money.

    • DR Bank Alfa settlement account — GBP 3,200.00
    • CR Nordbank settlement account — GBP 3,200.00
  5. 05Posting
    Day 3 — Asha Traders is debitedBank Alfa (payer bank)

    Also on Day 3, Bank Alfa books the debit against the employer's account. In the Bacs cycle the payer's debit and the payee's credit both land on entry day together — nothing was taken on Day 1 or Day 2.

    • DR Asha Traders' account at Bank Alfa — GBP 3,200.00
  6. 06Posting
    Day 3 — Riya is creditedNordbank (payee bank)

    Nordbank credits the employee's account on the same entry day. The three-day rhythm completes: submitted Day 1, entries passed Day 2, and money debited, settled, and credited all together on Day 3.

    • CR Riya's account at Nordbank — GBP 3,200.00
Bacs Direct Debit — swimlane diagramA biller pulls a bill from a customer's account over Bacs' three-working-day cycle under a Direct Debit Instruction, with unpaid items returned through the ARUDD cycle a day or two after settlement. The full step-by-step description follows this diagram as text.
Bacs Direct Debit. One collection through one three-working-day cycle with direct participants. Real Bacs processing batches large volumes, often runs through a sponsoring bank, and carries many return and amendment reason codes beyond the single ARUDD path shown. PLAY IT STEP BY STEP →
Read the steps as text
  1. 01Processing
    A mandate already existsRiya (payer) → Asha Traders (collector/biller)

    Before any money moves, Riya set up a Direct Debit Instruction (the mandate) authorising Asha Traders to pull agreed amounts from her account. The mandate is what makes a Direct Debit a PULL, and it is governed by the Direct Debit Guarantee — the payer's promise of an immediate refund from her own bank if a Direct Debit is taken in error.

  2. 02Message
    Asha Traders submits the collection fileAsha Traders (collector/biller) → Bacs (Pay.UK) · Bacs Standard 18 collection file

    On day one Asha Traders sends its collection file to Bacs through its own bank, Nordbank. The file lists Riya's bill of GBP 90.00 against her mandate. This is an instruction to collect — no money has moved yet.

  3. 03Clearing obligation
    Bacs processes and passes entries to the banksBacs (Pay.UK)

    On day two Bacs validates the file and passes the entries to each bank, so Bank Alfa learns it must pay and Nordbank learns it will receive. This calculates who owes whom — obligations, not money in the account yet.

    Processing produces obligations. Bank Alfa now owes the collection and Nordbank is due it, but nothing settles until day three.

  4. 04Settlement
    The banks settle in central bank moneyBank Alfa (payer bank) → Nordbank (collector bank)

    On day three the obligations from day two settle across the banks' accounts at the Bank of England. Only now does money actually move between Bank Alfa and Nordbank — this is the moment the collection becomes real interbank money.

    • DR Bank Alfa settlement account — GBP 90.00
    • CR Nordbank settlement account — GBP 90.00
  5. 05Posting
    Riya's account is debitedBank Alfa (payer bank)

    On the same day three, Bank Alfa books the debit against Riya's account under her mandate. The GBP 90.00 has now left the payer — the pull authorised in advance has been taken.

    • DR Riya's current account at Bank Alfa — GBP 90.00
  6. 06Posting
    Asha Traders' account is creditedNordbank (collector bank)

    Nordbank credits Asha Traders on day three, alongside Riya's debit and the interbank settlement. The three-day cycle is complete end to end: payer debited, banks settled, collector credited — all on day three.

    • CR Asha Traders' account at Nordbank — GBP 90.00
MESSAGECLEARING OBLIGATIONSETTLEMENTPOSTING

Evidence & review / 07

Evidence & review

AWAITING SME REVIEWNo qualified human domain reviewer has signed off on this yet — how review works.

REVIEWED 2026-07-13

Settlement arrangements of UK sterling schemes (CHAPS, Faster Payments, Bacs) at the Bank of England

What this brief simplifies: The RTGS ledger view omits liquidity facilities, queuing algorithms, and intraday credit; cycle counts, timetables, and prefunding sizes are described qualitatively and left to current scheme documentation.

Sources for this brief4
  1. Scheme-specific rule

    CHAPS ↗ — Bank of England · CHAPS as an RTGS-settled scheme operated by the Bank of England

    Describes CHAPS, the UK's sterling high-value payment system, settled payment by payment in the Bank of England's RTGS infrastructure. · Checked 2026-07-12

    The Bank of England has operated CHAPS directly since November 2017; participant-facing reference documents are published separately.

  2. Market practiceMarch 2003 edition

    A glossary of terms used in payments and settlement systems ↗ — CPSS (now CPMI), Bank for International Settlements · RTGS, deferred net settlement, finality

    Standard definitions for payment, clearing, and settlement terminology used across BIS committee reports and referenced by glossary entries on this site. · Checked 2026-07-12

    Terminology has evolved since this edition; newer CPMI publications refine some definitions.

  3. Market practice

    Fast payments - enhancing the speed and availability of retail payments ↗ — CPMI, Bank for International Settlements · Deferred net settlement with prefunding in fast payment systems

    Defines the key characteristics of fast (instant) payment services and analyses their benefits, risks, and implications for central banks. · Checked 2026-07-12

    Predates several major instant payment launches; this site uses it for concepts, not current statistics.

  4. Simplified educational illustration

    Payments Signal editorial teaching models — Payments Signal

    This site's own simplified teaching models. · Checked 2026-07-12

    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.

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