How to invoice Account NI

Account NI processes over 20,000 invoices per month. We are keen to work closely with suppliers to the departments in order to provide the best service possible and facilitate prompt payment of invoices.

Account NI invoice processes 

Previously, businesses providing goods and services to the NI Civil Service had to deal with financial systems that varied across the different departments. Now, Account NI provides one streamlined service from purchasing through to payment of invoice for all government departments.

Our preferred method of payment is directly to a bank account via BACs. This is a more secure and convenient method than cheque for both Account NI and suppliers and we would encourage you to provide your bank details and avail of it. 

You can ask for BACS payment to be made by emailing the following details to

  • bank or building society name and address
  • account name
  • account number
  • ​sort code
  • building society roll number (if applicable)
  • remittance address

You will receive a remittance advice by email, fax or post. We make payments every working day and the advice will be sent out on the day after we make the payment. Where possible payments are made by BACs and will take a minimum of three days to arrive in your account. 

In order to ensure a prompt payment, make sure you:

Account NI has taken steps to reduce invoice processing times to within 10 days of receipt of invoice for goods and services. Invoices are paid as soon as they have been fully authorised and quality assured by the departmental officials. This applies to all suppliers of goods and services but our existing contractual terms and conditions remain unchanged. 

Yearly NICS prompt payment tables are available to view.

Suppliers can have orders emailed or faxed directly to them, by requesting this and providing their email address or fax number in an email to

Please contact AccountNI if you have any further queries.

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