BACS Payments Explained: Transfer Times, Types, and Alternatives
If you own a United Kingdom-based business that runs payroll, collects membership fees, or pays suppliers and vendors, you’ve likely used the BACS system quite a few times. Even if you use it every day, though, you might not know how it works. BACS (sometimes written as Bacs) stands for Bankers’ Automated Clearing Services, which is a network that’s been processing payments in the UK since 1968. When a paycheck hits an employee's account on a Friday, or when a gym pulls its monthly fee, that transaction almost certainly passes through the BACS network.
Americans who encounter BACS payments while living in the UK may think they’re the British version of ACH (Automated Clearing House) payments. That’s not a bad assumption, but it’s not true. The BACS network comes with a few distinct features that new business owners should know before they begin making payments. Finance teams that understand the system’s three-day cycle and its Direct Debit and Direct Credit may be in better shape to build out their payment workflows and choose better rails for certain transactions.
In this guide, you’ll learn how BACS payments move through the UK banking system, why businesses still rely on them for high-volume payments, and when Faster Payments or CHAPS may be a better option. For UK companies that also do business in U.S. dollars, we’ll also look at Slash Global USD.³ The account provides USD account details without requiring a U.S. business entity and can be funded through UK payment rails such as BACS and Faster Payments, creating a straightforward bridge between GBP and USD operations.
The standard in finance
Slash goes above with better controls, better rewards, and better support for your business.
What Is a BACS Payment?
BACS is the electronic payment network that powers the majority of scheduled, recurring, and bulk payments in the United Kingdom. The system is run by BACS Payment Schemes Limited, which became a subsidiary of Pay.UK in 2018. According to Treasury Management International, an average of 6.5 billion BACS payments are made every year.
Overall, BACS is built more for predictability than for urgency. It’s best used for transfers like payroll runs and vendor payments where the amount, recipient, and timing are known in advance. As a batch processing system, BACS payments are grouped and processed in bulk rather than one at a time. This makes them efficient and cost-effective, but it also makes them fairly slow. Despite the availability of faster alternatives like the aptly-named Faster Payments, the consistency of BACS makes it the backbone of recurring payments in the United Kingdom.
When someone says "BACS payment," they’re usually referring to one of two different transaction types. “Direct Debit” is used to collect money from a payer's account with their authorization, while “Direct Credit” is used to send money to a recipient's account. Between these two tools, business owners can do almost anything with the BACS network, as long as they’re willing to be a bit patient.
How BACS Payments Work
BACS operates on a three-day cycle, each with its own stage: submission, processing, and settlement. This cycle runs on weekdays only, which means payments submitted on a Friday do not advance until the following Monday. Bank holidays also pause the cycle, just as they do in America. That said, the UK’s holidays are markedly different from American holidays, so newcomers to the country should keep an eye on their calendars.
Here’s a quick breakdown of each stage of a typical BACS payment:
Day 1: Payment submitted
A payment file is submitted to the BACS network, either by the payer’s bank or a payment bureau acting on behalf of the payer.. The submission window runs from 7:00 AM to 10:30 PM on weekdays. This file contains the payment instructions, including the recipient's sort code, account number, amount, and payment reference.
If you need to rescind a payment you submitted, you can often cancel it on Day 1. If you contact your bank and request a BACS recall, they may be able to intercept the funds before they make it too far along in the system.
Day 2: Payment processed
On day 2, the BACS system processes the submitted files. To do this, it validates, sorts, and routes the instructions to the relevant receiving banks. It’s important to note that data is being transported here, not the actual money. The receiving banks accept the information and prepare their systems to credit the funds on the following day. Because the funds haven’t moved yet, you may be able to request a BACS recall on day 2, but the likelihood of success depends on factors like the type of payment and the banks involved.
Day 3: Funds credited or debited
The funds finally move on the third working day. Whether your account is being credited or debited, you can expect the money to move between 1:00 AM and 7:00 AM. This sets the BACS system apart from American rails like ACH, as ACH generally can’t settle outside of business hours. In the UK, subscription fees clear, invoices settle, and paychecks land in the wee hours of the morning.
Types of BACS Payments
While some payment rails only send money to a recipient’s account, the BACS system can both send to and remove money from an account. These abilities, known as “Direct Debit” and “Direct Credit” each have their own rules and use cases. Here’s how they work:
BACS Direct Debit
Direct Debit allows an organization to pull funds from a customer's bank account, provided the customer has given their authorization via a Direct Debit mandate. This mandate is a formal authorization that the payer signs in order to give the collecting organization permission to take money from their account.
Before a business can collect via Direct Debit, it must either be approved by BACS or work through a bureau that processes collections on its behalf. The mandate process is meant to both give legal permission and also create a clear authorization trail that can be followed in case of an audit or investigation.
Direct Debit is the standard method for recurring consumer payments like utility bills, insurance premiums, and rent payments. It’s also used for B2B invoicing, such as an arrangement where a company buys inventory from a vendor each month. Because it’s all automatic, the customer will never forget to pay on time, and business can move as usual without unexpected late payments.
That said, unauthorized collections can still happen if a schedule is set up incorrectly or if a recurring debit isn’t cancelled at the end of a contract. In these cases, UK customers are protected by the Direct Debit Guarantee, which is a measure that gives payers the right to an immediate refund from their bank. This guarantee applies to all Direct Debits set up under BACS.
BACS Direct Credit
As the opposite of Direct Debit, Direct Credit allows an organization to send funds from its account to one or more recipient accounts. It’s the standard route for payroll, supplier payments, contractor fees, refunds, and any scenario where a business is paying out to multiple recipients in a batch.
Most payroll systems in the UK process via BACS Direct Credit, meaning employees usually wake up on payday to their check having already been settled between 1 AM and 7 AM. Businesses with large supplier lists or disbursement needs can use Direct Credit to process hundreds or thousands of payments in a single file submission. Instead of initiating each payment individually, a finance team can submit a single file and allow the network to send the funds to the correct accounts across participating UK banks.
How to Make a BACS Payment
There are four main pieces of information you’ll need before sending your first BACS payment. Make sure you have the recipient's name, their bank account number, their sort code, and the amount and payment reference. You’ll also need to specify the intended payment date, which has to obey the three-day cycle. If you initiate a payment on a Thursday, for example, you’ll mark down the following Monday as the settlement date.
For those making a one-off BACS payment, most UK online banking platforms allow you to set up a transfer using a recipient's sort code and account number. The bank handles the file submission on your behalf, and the payment follows the standard three-day cycle.
Businesses making regular or bulk payments may not want to hop into their banking portal each time and input numbers manually, though. That’s why companies that run payroll or make high-volume supplier payments typically use BACS-approved payment software or a BACS bureau, a service provider that manages the file submission process. To access the BACS network directly, a business must either hold a sponsorship arrangement with a BACS member bank or use an approved bureau.
Smaller businesses that don't want to manage the technical file formatting requirements themselves may want to call upon the help of a bureau. Whichever avenue you choose, you’ll need to know your recipient’s details and whether there are any weekends or banking holidays coming up that could delay your transfer.
BACS vs. Other UK Payment Methods
BACS isn’t the only interbank payment system in the United Kingdom. Businesses may also use Faster Payments or CHAPS to send money from their account to a vendor or partner. Here’s an overview of how these three networks compare to each other:
If you’re looking to make a one-time payment that settles the same day it’s executed, CHAPS and Faster Payments are probably the right pick. Not all business transactions are particularly urgent, however. For those that aren’t, BACS is often the lowest-cost choice.
Plenty of UK businesses use all three rails for certain scenarios. A company may run their payroll on BACS, send funds to vendors via Faster Payments, and execute a high-value transfer to a subsidiary through CHAPS. Knowing the mechanics of each system can help finance teams avoid paying unnecessary fees on routine payments and encountering delays when speed matters.
Support Different Payment Needs with Slash
BACS is an important part of the UK’s payment infrastructure, but many UK businesses also need to operate in U.S. dollars. Whether you’re collecting revenue from American customers, paying U.S. vendors, or expanding into the U.S. market, accessing USD can be challenging without establishing a U.S. business entity.
With the Slash Global USD account, UK businesses can access U.S. account details without forming an American company. Accounts can be funded from existing UK bank accounts through BACS or Faster Payments, making it easier to operate in both currencies without maintaining separate banking relationships across multiple providers.
Key features include:
- Flexible funding options:Fund your account using major domestic and international payment rails, including ACH and wires for USD, BACS and Faster Payments for GBP, and more.¹
- Global payment capabilities:Send USD payments via ACH, international wires to 180+ countries, or stablecoin transfers in USDC and USDT.⁴
- Slash Visa Platinum Card:Earn up to 2%+ unlimited cashback on eligible purchases. Issue cards to team members in 100+ countries and spend anywhere Visa is accepted.
- Spend controls and approvals:Manage cards, spending limits, approvals, transactions, and team permissions from a single platform, helping finance teams maintain visibility and control over company spending.
- Accounting & ERP integrations:Sync transaction data with QuickBooks Online, Xero, NetSuite, or Sage Intacct to streamline reconciliation, reporting, and month-end close.
With Global USD, your UK company can access, manage, and spend U.S. dollars without the complexity of establishing a U.S. entity. Get started today.
Apply in less than 10 minutes today
Join the 10,000+ businesses already using Slash.
Frequently Asked Questions
What information do I need to make a BACS payment?
You need the recipient's name, their UK bank account number, their sort code, the payment amount, and a reference that helps the recipient know who's paying them. For business users making bulk payments, you'll also need to confirm the payment date and ensure the submission reaches the BACS network before the 10:30 PM weekday cutoff.
What is an IBAN Number, and How Do You Find It?
What's the difference between BACS Direct Debit and BACS Direct Credit?
Direct Debit is initiated by the recipient (payee) to collect funds from a payer who has provided authorization. Direct Credit is initiated by the sender (payer) to push funds to a recipient's bank account. Subscription billing and utility collections use Direct Debit; payroll and supplier payments use Direct Credit.
ACH Credit vs. ACH Debit: What's the Difference, and How Should Your Business Use Them?
Is BACS safe?
Definitely. BACS operates under the oversight of Pay.UK and uses encryption and authentication protocols across the network. Customer protection is further supported by the Direct Debit Guarantee, which entitles payers to an immediate refund from their bank for any payment taken by accident or without proper authorization.
Can any business in the UK use BACS?
Businesses can access BACS either directly (by becoming a BACS member or holding a sponsorship arrangement with a member bank) or indirectly (through a BACS-approved bureau). Many small and mid-sized businesses use the bureau route for payroll and bulk payments, since it avoids the technical overhead of direct membership. Individual personal banking customers can also make BACS payments through standard online banking without any special arrangement.
