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Guide

How to do accounting when you're busy running the business

A practical, NZ-ready rhythm that keeps your books clean, your GST sorted, and your time focused on customers—not spreadsheets.

7 min readUpdated Jan 2026GST-ready
Illustration of an accounting checklist with completed tasks

Quick rhythm

  • Daily: log receipts and tag spend by category.
  • Weekly: reconcile bank feed to invoices and expenses.
  • Monthly: review P&L, cash flow, and GST preview.
  • Quarterly: file GST and follow up slow payers.
Keep a separate GST stash account so filing day is painless.
Use rules to auto-categorize fuel, subscriptions, and transfers.
Send invoices from one place so payment tracking stays tidy.

1) Set up the basics

Separate business banking from personal spending. Create three buckets: operating expenses, tax/GST, and owner pay. Add your bank feeds into your accounting tool, then set default categories for common spend types (fuel, software, contractors, materials).

2) Capture every expense

Keep evidence while it is fresh. Snap each receipt and tag it before you leave the cafe, supplier, or job site. Log mileage and home-office allocations weekly so you do not scramble at year end.

Set up your money buckets

Open separate accounts for operating expenses, tax/GST, and owner pay. Keep business and personal spend apart from day one.

Capture every receipt in real time

Snap photos on your phone and tag them by category. No inbox dumping—log the spend while it is fresh.

3) Reconcile weekly

Set a 30-minute block every Friday. Match bank transactions to invoices and receipts, split mixed spends, and tag anything you need to revisit. Consistency here prevents messy year-end cleanups.

Reconcile weekly, not yearly

Match bank feeds to invoices and expenses once a week. Short sessions keep the ledger clean and stress-free.

Stay GST-ready

Track GST on each transaction, run a quick return preview monthly, and set aside cash so filing is just a click.

4) File GST without panic

Track GST on each transaction. Run a GST return preview monthly so you can spot errors early. Transfer the expected GST amount into a separate account every month. When filing day arrives, you are just confirming the numbers, not hunting for invoices.

Charts showing GST-ready accounting

5) Close each month

Run your profit and loss, cash flow, and aged receivables. Check who owes you, chase slow payers, and confirm your tax/GST stash matches what you owe. Note any spikes in spend categories and adjust next month’s budget.

Review reports monthly

Scan P&L, cash flow, and aged receivables. Look for slow payers and categories that are creeping up.

Year-end checklist

  • ✔ Reconcile final month and lock the period.
  • ✔ Count inventory or confirm stock levels if relevant.
  • ✔ Export P&L, balance sheet, and general ledger for your accountant.
  • ✔ Check fixed assets and add new purchases for depreciation.

Want this done for you?

Wootz can keep your bank feeds clean, match receipts, and prep GST in the background. You keep selling; we keep the ledger tidy.