Getting paid

You can send your invoice for payment online, by email or mail.

Read below to find out how.


InvoiceNTG allows businesses to submit invoices to a Northern Territory (NT) Government agency for payment.

Go to InvoiceNTG to find out how to register your business or track an invoice.


InvoiceNTG can't be used for the payment of invoices for:

  • Power and Water Corporation
  • Jacana Energy
  • Territory Generation.

Check your contract documents on where to send invoices, or ask your agency contact.

By email

You can email your invoice for payment to

By mail

You must use the correct postal address.

Ask your contract manager for the details.

Invoices for construction, maintenance or infrastructure

If you have an invoice for construction, maintenance or infrastructure, you must submit it for payment to one of the below:

  • Department of Infrastructure, Planning and Logistics
  • Department of Territory Families, Housing and Communities.

Use the email address provided in tender documents.

For information about contract management or payment, contact the agency officer listed in your tender documents.

You will get a remittance report when payment is complete.

Government billing details

Your invoice must have the correct organisation billing details.

You can find the billing details for different agencies below.

Government agency billing information PDF (176.7 KB)
Government agency billing information DOCX (131.3 KB)

Payment policy

All invoices under $1 million will be paid within 20 days of receiving the invoice, unless there is a dispute over the account.

All invoices over $1 million will be paid within 30 days of receiving the invoice, unless there is a dispute over the account.

You can seek penalty interest payments from government if these payment terms aren't met.

Late payments

The invoice payment period applies from the date of receipt of the invoice where:

  • the invoice is correct and not disputed
  • works, goods or services have been received.

Penalty interest rates

The penalty interest rate is set on an annual basis and paid at the 90 day bank bill rate as at 1 June each year.

For 2022 to 2023, the rate has been set as 0.555%.

Penalty interest rates do not apply if interest penalty payments are received late.

Penalty interest claims are not subject to GST.

How to calculate penalty interest payment

Interest is calculated from the 21st or 31st day, depending on the invoice amount, to the date the late payment was made by the government.


If an invoice of more than $1 million is received on 15 April and payment is made on 31 May, interest is payable is for the period 15 May to 31 May (both days inclusive) or 17 days.

Invoice received15 April
30 day payment due14 May
Payment made31 May
Penalty period begins15 May
Penalty period ends31 May
Penalty interest due17 days

How to claim penalty interest payment

You will need to submit a tax invoice to claim the penalty interest within 90 days of the late payment being made.

You must submit your invoice to the government organisation that received the original invoice.

Invoice details must include the following details:

  • date the NT Government organisation received the original invoice
  • date of payment
  • copy of the original invoice
  • period for which the supplier considers interest is due
  • amount of penalty interest sought.


For payment queries including calculating interest, email

Last updated: 05 October 2022

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