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  • Tax

    • GST in Coffer
    • Reviewing and filing your GST return in Coffer
    • Reviewing a client's GST return in Coffer
    • Income tax and ringfencing
    • The KiwiSaver set-aside
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  • Expenses

    • Recording expenses
    • Why records lock after a GST return is filed
    • The home office deduction
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    • Recording your bank balance
    • Running Coffer with a revolving credit account
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    • Setting up your business profile
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Browse articles
  • Getting started

    • Getting started
  • Invoicing

    • Managing your clients
    • Quotes
    • Creating and managing invoices
    • Invoice numbering templates
    • Marking invoices paid
  • Tax

    • GST in Coffer
    • Reviewing and filing your GST return in Coffer
    • Reviewing a client's GST return in Coffer
    • Income tax and ringfencing
    • The KiwiSaver set-aside
    • Withholding tax (contracting via an agency)
    • Reports & returns
    • The detailed tax breakdown
    • ACC levies
  • Expenses

    • Recording expenses
    • Why records lock after a GST return is filed
    • The home office deduction
  • Bank

    • Recording your bank balance
    • Running Coffer with a revolving credit account
    • Pots
  • Settings

    • Setting up your business profile
    • Inviting your accountant

Expenses

Why records lock after a GST return is filed

When GST filing locks begin, which expense and receipt actions stop, what remains available, and what to do if a filed record is wrong.

Filing a GST return fixes the figures and evidence used for that period. Coffer locks the expenses covered by the filed review so a later edit can't make your records disagree with the return submitted to IRD.

When the lock starts

The lock starts when the assigned filer selects Mark as filed. It doesn't wait for the GST payment to leave your account or for a refund to arrive.

Every expense listed in that filed review is preserved with its decision. This includes an expense the filer approved and one they excluded with a reason.

What you can't change

For an expense covered by a filed GST review, you can't:

  • edit the expense details or amounts;
  • delete the expense;
  • add another receipt;
  • finish a pending receipt upload; or
  • delete an attached receipt.

The Expenses page marks these rows GST filed and replaces the edit and delete actions with Locked. The period filter also shows how many visible expenses are locked.

Expenses

FY 2026-27 · Apr 2026 - Sep 2026 GST period

2 expenses locked
DateDescriptionAmountClaimable GSTActions
04/07/2026
Workstation and monitorGST filed
1 receipt
$4,299.00$560.74 Locked
28/06/2026
Accountant annual accountsGST filed
1 receipt
$1,150.00$150.00 Locked
Filed expenses stay visible with their receipts and GST figures. Edit and delete actions are replaced by the Locked state.

What you can still do

You can still view the expense and open or download its receipts. The lock protects the filed record; it doesn't hide it.

You can also open the return under Reports & returns to see the reviewed expenses, decisions, comments, filed worksheet, and payment or refund status.

Paying GST doesn't remove the lock

Recording the payment changes the return to Part-paid or Paid. Confirming a refund changes it to Refund received. Neither action reopens the expenses, because the filed figures still need to match the return.

If a filed expense is wrong

Keep the filed record intact

Coffer doesn't currently provide an amendment flow for a filed GST return. Don't delete or recreate the expense to work around the lock. Keep the filed record and speak with your accountant about how to correct the return.

The same principle applies to invoices covered by a filed GST period. See Creating and managing invoices for the invoice lock shown in its workspace.

On this page

  • When the lock starts
  • What you can't change
  • What you can still do
  • Paying GST doesn't remove the lock
  • If a filed expense is wrong

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Coffer keeps the numbers behind your contracting straight through the year: what you have invoiced, what you have spent, and what you owe. It works out the figures and keeps the records, but it is not tax advice and does not stand in for your accountant or IRD. Its job is to make sure the numbers you take to them are right.

© 2026 Coffer. Made in New Zealand.