Confirm Xero’s GST settings before generating the return
Open the organisation’s financial settings and confirm the GST registration status, GST number, accounting basis and filing frequency agree to Inland Revenue. Xero uses these settings to generate the New Zealand GST return. A wrong basis or period can cause transactions to appear in the wrong return even when their tax codes look correct.
Confirm the return start date and whether any earlier return was filed outside Xero. If migrating systems, verify the opening GST position and the date from which Xero contains complete transaction data. Document any historical returns or adjustments that are not represented in the current ledger.
Complete and reconcile the underlying bookkeeping
Reconcile bank and credit-card feeds through the period end. Enter missing invoices, bills, credit notes, expense claims and asset purchases. Review sales platform and payment gateway postings. Clear suspense and uncategorised transactions. The Xero GST return can only be as complete as the books from which it is generated.
Check receivables and payables where relevant to the registered GST basis. Review transactions dated near the period boundary and ensure credit notes are applied correctly. Avoid changing dates or deleting transactions in a previously filed period without understanding the GST impact.
Use the GST audit report to identify exceptions
Xero provides transaction detail behind the GST return. Scan for large GST amounts, negative tax, unusual tax rates, no-GST coding on ordinary domestic expenses, GST on exempt income, manual journals and direct postings to control accounts. Review capital purchases, overseas transactions, zero-rated supplies, entertainment, private-use adjustments and asset disposals separately.
Open the source transaction and inspect the attached document. Confirm the supplier, date, amount and GST evidence. If the technical treatment is uncertain, add the item to a reviewer query list instead of selecting a code merely to complete the return.
Reconcile the return and obtain approval
Tie the draft GST return to the general ledger control accounts and prepare a movement reconciliation. Compare sales in the return with revenue reports and investigate significant changes from earlier periods. Record adjustments with explanations and supporting calculations. The reviewer should receive the draft return, audit report, reconciliation and exception list.
Xero can support electronic filing with Inland Revenue, but filing authority and final review responsibilities should be clearly assigned. Do not finalise the return simply because the software allows it. Confirm the payment or refund amount, due date and client approval process.
Finalise the period and protect the audit trail
After filing, save the confirmation and final return pack. Post or verify the GST journal according to the organisation’s accounting process and confirm the ledger balance agrees to the filed return plus payments or refunds. Set appropriate lock dates to reduce accidental changes to completed periods.
If a later transaction affects a filed period, follow a documented amendment or late-claim process rather than silently changing the old return. Use review findings to improve tax rates, supplier defaults and bank rules. A well-controlled Xero GST process makes each return easier without removing the need for professional judgement.
Before relying on the completed file, compare the current-year output with prior periods, retain the official reports and source records used, and record every unresolved matter for the New Zealand accountant or tax adviser. This final review creates a clear audit trail, supports consistent treatment and makes the next bookkeeping, GST or annual accounts cycle faster and easier to review.