Keeping Records for Tax

📋 What to Keep

The aim is to be able to show where every income and expense figure came from. That means keeping the documents behind your numbers, not just the totals.

Tax Invoices and GST

If you are GST registered, valid tax invoices are essential, because they are what let you claim GST on purchases. Keeping them organised as you go is far easier than hunting for them at return time. See our guide on how GST works.

⏳ How Long and How to Store

How Long to Keep Records

Tax records generally need to be kept for a set number of years after the relevant return, commonly seven years in New Zealand. The exact requirement is set by Inland Revenue and can vary by situation, so check the current rule. Keeping records too short a time is a real risk if your return is ever reviewed.

Digital Is Fine, and Easier

You do not have to keep boxes of paper. Records can be kept electronically, and digital storage is usually easier to search, back up, and protect from fading or loss. Many people photograph receipts and use accounting software or a simple folder system.

💡 Building a Simple System

Do It as You Go

The single biggest improvement most people can make is to record things as they happen rather than in a panic at year end. A little and often beats a marathon. Capturing receipts weekly and reconciling monthly turns tax time from a nightmare into a quick check.

• Separate business and personal: a dedicated business bank account makes records far cleaner.
• Use software or a consistent folder system: whatever you will actually keep up.
• Reconcile regularly: match records to bank statements so nothing is missed.
• Keep everything that supports a number in your return.

The Payoff

Good records do more than keep you compliant. They mean you claim every legitimate deduction, so you do not overpay. They make any Inland Revenue review straightforward. And they give you a clear picture of how your business or finances are actually doing.

Estimate your tax with the Income Tax Calculator, and pair good records with our guides on depreciation and GST registration. Final word: keep the documents that support your income and expenses, store them digitally, back them up, and keep them for the required period. Do it as you go, and tax time becomes simple and cheaper. This is general information, not tax advice; check the current record-keeping rules.