Bacs bureau: do you need one, or do you need to be one?
Two very different questions hide behind the same phrase. One is about outsourcing your payment submissions; the other is about taking on a regulated obligation, an inspection cycle and an annual fee. This page separates them, using Pay.UK’s own scheme guidelines.
What is a Bacs bureau?
A Bacs bureau submits payment instructions to Bacs on behalf of other organisations. Pay.UK’s definition: “A bureau submits payment instructions on behalf of service users, if their sponsoring participant sets up a relationship between the service user and the bureau.” A bureau may build the payment files itself or merely transmit files the service user has already created. There are two sub-types: an in-house bureau, submitting only for entities in the same organisation or group, and a commercial bureau, submitting for separate legal entities.
The one rule that decides whether you need approval. In-house bureaux “are not required to register for BAB status”. The moment you submit for a separate legal entity, approval becomes mandatory: “An organisation submitting data on behalf of totally independent third-party customers must register as a Bacs Approved Bureau.”
Everything else — inspections, tiering, fees, bureau numbers — follows from which side of that line you are on.
In-house bureau or Bacs Approved Bureau: which one are you?
Pay.UK recognises two kinds of participant, and both must be sponsored by a bank before they can reach the payment system at all.
No approval neededService user, paying your own people
You originate payment instructions on your own behalf — payroll, supplier payments, Direct Debit collections from your own customers. You either submit directly with your own Bacs approved software, or you hand the job to a bureau. Either way, no bureau status applies to you.
No approval neededIn-house bureau, same group
You submit for other entities, but they belong to the same organisation or group of companies. Pay.UK calls this an in-house bureau, and in-house bureaux “are not required to register for BAB status”. You will still have a bureau number issued through your sponsor.
Approval mandatoryCommercial bureau, clients’ payments
You submit for separate legal entities — clients. This is a commercial bureau, and beyond bank authorisation you must pass the Pay.UK application and inspection process before you can operate. Payroll bureaux and accountancy practices running client payment runs land here.
One consequence catches people out in acquisitions: approval does not come with the company. The guidelines are explicit that BAB status “is non-transferrable and cannot be operated by any organisation other than the one approved by Pay.UK”. Buying a bureau does not buy you its approval.
There is a defined process, though, not a dead end. Both Pay.UK and the sponsoring participant must be told before a change of ownership takes place; Pay.UK will review the fee position, check the sponsor agrees and “usually give agreement that the transfer of the BAB to the new organisation can go ahead”. Expect the sponsor to run a change-of-user process that “may incur new applicant fees and a new applicant inspection”, and expect the BAB status to show as ‘In-house’ for the duration of the transfer.
What Bacs Approved Bureau status involves: tiers, inspections and fees
Approval is not a one-off certificate. Every approved bureau sits in a tier set by the transaction volume submitted under its bureau number in the previous calendar year, and the tier determines how often Pay.UK inspects and whether that inspection happens on site.
| Tier | Annual transaction volume | Year 1 | Year 2 | Year 3 | Year 4 |
|---|---|---|---|---|---|
| A | Over 5 million | Full (on-site) | Interim (on-site) | Full (on-site) | Interim (on-site) |
| B | 250,000 – 5 million | Full (on-site) | Annual Compliance Statement | Full (on-site) | Annual Compliance Statement |
| C | 25,000 – 250,000 | Full (remote) | Annual Compliance Statement | Annual Compliance Statement | Full (remote) |
| D | Under 25,000 | Full (remote) | Annual Compliance Statement | Annual Compliance Statement | Full (remote) |
Remote is the norm rather than a guarantee for the smaller tiers: Pay.UK notes that “typically, BABs in tiers C and D will be inspected remotely”, but that the Bureau Inspector “will randomly sample BABs in these tiers for an on-site inspection on an ongoing basis”. Transaction volumes are also reviewed quarterly, and a significant increase that moves you into a higher tier can bring the next inspection forward.
The inspection covers the whole chain, “from the receipt of Bacs-related information, through to the point of transmission to the Bacs clearing system”. That includes how you receive client data, how you validate and input it, and how you manage the PKI credentials used to sign submissions. If you outsource part of that operation to a third-party provider, the provider comes into scope too.
On money: there is a one-off registration fee payable before the application progresses, and an annual fee levied each April at bureau-number level, based on the previous calendar year’s volume. New bureaux are exempt from the annual fee in the year they join. Pay.UK publishes the current tariff separately — we do not reproduce figures here, because they change and a stale number is worse than none.
If you are choosing a bureau rather than becoming one
Ask for the bureau number and the sponsoring participant
Every legitimate bureau has both. This is a more reliable check than the published directory, because Pay.UK’s Bacs Approved Bureaux Directory is a PDF compiled from what bureaux themselves report, and organisations can opt out of appearing in it. Absence from the list proves nothing either way.
Establish who holds the Service User Number
This is the question that decides where the obligations sit. If you hold the SUN, your bank sponsored you and the scheme obligations are yours, whoever presses submit. If the provider holds it, they carry them. Both models are normal; being unclear which one you are in is not.
Check the software matches the job
Bureau submission needs a product approved for multi-file bureau use, which is a different approval from single-file submission — several suppliers sell both versions separately. The approved software register shows which products carry which approval.
Work out the timing before you commit
Bacs runs on a three-day cycle, and adding a bureau adds a hand-off before that cycle starts. Agree the cut-off you must hit to reach their submission, not just Bacs’s own deadline. Our payment timing calculator works the dates through, and the BACS guide covers the cycle itself.
The third option: neither becoming a bureau nor hiring one
The choice is usually framed as “become a bureau or hire one”. There is a third route: use payment infrastructure where the provider already holds the regulatory position, so no SUN sponsorship, no bureau registration and no inspection cycle lands on you. You give up some control over the submission mechanics and gain a much shorter path to paying people.
Which route is right depends on volume, on how much of the payment operation you want to own, and on whether submitting for clients is part of what you sell or just something you have to do. It is worth deciding deliberately rather than drifting into bureau status because a client asked.
Common questions
What is a Bacs bureau?
A bureau submits payment instructions to Bacs on behalf of other organisations. Pay.UK's scheme guidelines put it plainly: “A bureau submits payment instructions on behalf of service users, if their sponsoring participant sets up a relationship between the service user and the bureau.” A bureau can either build the payment files itself or simply transmit files the client has already created.
Do I need to be a Bacs Approved Bureau?
It depends entirely on whose payments you submit. If you submit only for your own organisation or for companies within the same group, you are an in-house bureau and approval is not required. The moment you submit for a separate legal entity — a client — you must become a Bacs Approved Bureau. Pay.UK is unambiguous: “An organisation submitting data on behalf of totally independent third-party customers must register as a Bacs Approved Bureau.”
What is the difference between a service user and a bureau?
A service user originates payments on its own behalf, whether directly through its own systems or indirectly through a bureau. A bureau originates or transmits payments on behalf of others. Both must be sponsored by a Bacs participant — a bank — before they can touch the payment system at all.
How often is a Bacs Approved Bureau inspected?
Every approved bureau is assigned a tier from A to D based on the transaction volume submitted under its bureau number in the previous calendar year. The tier sets the inspection cycle. Tier A, above five million transactions, faces alternating full and interim on-site inspections every year. Tiers C and D, under 250,000 transactions, have a remote full inspection and Annual Compliance Statements in between.
Can I buy or transfer Bacs Approved Bureau status?
No. The guidelines state that “the BAB status is non-transferrable and cannot be operated by any organisation other than the one approved by Pay.UK”. Acquiring a company that holds BAB status does not hand you its approval to use as your own.
Is there a complete list of approved bureaux?
Not a complete one. Pay.UK publishes a Bacs Approved Bureaux Directory as a PDF, maintained from information the bureaux themselves supply, and organisations can opt out of appearing in it. So a bureau missing from the directory is not necessarily unapproved — ask for its bureau number and sponsoring participant instead of relying on the list.
Sources: Pay.UK, Bacs Approved Bureau Scheme Supporting Guidelines v2.1 (January 2024, published as a public document), the Bacs Approved Bureau scheme pages and the Bacs Approved Bureaux Directory. Quoted wording is Pay.UK’s. Fees and tariffs are deliberately not reproduced here — check the current tariff with Pay.UK or your sponsoring bank.
Written by the financeb2b editorial team · Last updated 1 September 2026 · Editorial policy
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