Finance & Treasury Glossary of Terms

Automated return of unpaid direct debits (ARUDD)

A UK Bacs reporting service that automatically informs organisations when a Direct Debit collection has failed and the funds have not been paid by the customer’s bank. ARUDD messages provide standardised reason codes explaining why the payment was returned unpaid, for example insufficient funds, account closed, instruction cancelled, or payment stopped. These automated notifications enable organisations to quickly update their records, trigger retry or customer contact processes, manage cash flow expectations, and maintain accurate reconciliation, while reducing manual investigation and supporting compliance with Direct Debit scheme requirements.

Back-Office System Integration

The process of connecting internal financial systems, like ERP or payroll, with external banking networks to automate workflows, reduce manual intervention, and enhance operational efficiency.

Bacs

A UK-based electronic payment scheme that facilitates the transfer of funds between bank accounts, commonly used for Direct Debit and Direct Credit transactions.

Bacs Approved Bureau (BAB)

A third-party provider authorised to submit payment instructions on behalf of businesses using the Bacs payment scheme.

Bacs Approved Software Service (BASS)

A Bacs Approved Software Service (BASS) is a certification framework from Bacs that recognises software providers whose payment solutions meet the scheme’s technical, security, and operational standards for submitting Direct Debit and Direct Credit files. Software accredited under BASS is independently tested to ensure it can correctly create, process, validate, and transmit Bacs payment files while maintaining data integrity, auditability, and compliance with scheme rules.

Using Bacs-approved software helps organisations reduce the risk of file errors, rejected submissions, or security weaknesses in their payment processes. It also provides assurance that the solution supports required reporting, encryption, and submission controls, making it easier to demonstrate compliance, strengthen governance, and operate reliable, scalable automated payment workflows within the UK Bacs network.

Bacs cycle

The Bacs cycle is the standard three-working-day processing timetable used by Bacs to handle Direct Debit and Direct Credit transactions in the UK. On Day 1 (Input Day), payment files are submitted to Bacs by the organisation or its bureau. On Day 2 (Processing Day), the system processes the instructions and sends them to the relevant banks. On Day 3 (Entry Day), funds are debited from the payer’s account or credited to the recipient’s account.

Understanding the Bacs cycle is essential for cash-flow planning, payment scheduling, and operational control. Businesses must submit files before the daily cut-off time and allow for weekends and bank holidays, which are not counted as working days. Properly managing the cycle helps ensure payments arrive on time, reduces the risk of late collections or payroll delays, and supports accurate reconciliation and forecasting within finance and treasury operations.

Bacs Direct Credit – BDC

A payment method used by organisations to transfer funds electronically into recipients’ bank accounts, commonly used for salaries, pensions, and supplier payments.

Bacs report

A detailed report showing payments submitted through the UK Bacs system, including submission details, processing outcomes, rejected items, and settlement dates.

• Input Report/Arrival Report: Confirms the successful submission and processing of Bacs payment files.
• ARUDD Report: Advice of Unpaid Direct Debits, highlighting failed collections.
• ADDACS Report: Advice of Direct Debit Amendments and Cancellations, keeping records updated.
• AWACS Report: Advice of Wrong Account for Automated Credits Service, for incorrect credit payments.
• AUDDIS Report: Automated Direct Debit Instruction Service, confirming new instruction set-ups.
• DDICA/DDIC Report: Direct Debit Indemnity Claim Advice, detailing claims for incorrect payments.

Bacs Scheme Rules and Standards

The regulatory framework that governs the operation of the Bacs system, ensuring compliance and consistency in payment processing.

Bacs-Approved Software

Payment software that meets strict Bacs security and compliance standards, ensuring businesses can process Bacs payments securely and reliably. Using Bacs-approved software minimises the risk of payment failures and errors.

Bank Account Governance

The policies, controls, and oversight mechanisms governing the lifecycle, ownership, and access rights of bank accounts.

Bank Connectivity

The seamless integration between a company’s financial systems and its banking partners. By automating the secure transfer of payment files and bank statements, organisations can improve efficiency, reduce manual errors, and gain real-time visibility into their cash flow.

Bank Statement Reconciliation

A financial process where a business cross-checks its internal payment records with actual bank statements to spot any discrepancies. This helps identify missing transactions, duplicate payments, or potential fraud. Automated reconciliation tools speed up the process, reducing errors and improving financial accuracy.

Bank Statement Retrieval

An automated service that retrieves real-time or scheduled bank statement data and transmits it directly into an organisation’s financial systems. This ensures up-to-date financial records and simplifies reconciliation.

Bank-Agnostic Payments

The ability to initiate, manage, and control payments without reliance on a single bank’s proprietary platform.

Business Continuity for Payments

The plans, systems, and controls that ensure critical payment operations continue during system outages or external disruptions.