NZ Business Compliance Guide · 2026
What Records NZ Businesses Must Keep for IRD — Complete Guide 2026
Which records you must keep, how long to keep them, and what happens if you can't produce them during an IRD review. A practical guide for NZ small business owners.
· 12 min read
One question we get from almost every new client at Elite Taxation is some version of "do I actually need to keep this?" Usually asked while holding a shoebox of receipts, or scrolling through years of bank statements wondering what can finally be deleted. Understanding what records NZ businesses must keep for IRD isn't just about staying tidy, it's a legal requirement, and getting it wrong can mean disallowed deductions, penalties, or a much harder time if IRD ever reviews your business. This guide covers exactly what to keep, for how long, and how to store it properly, whether you're a sole trader, company or contractor. Written by Auckland accountants who deal with IRD record keeping requirements daily.
Before going through the specific categories, it helps to understand the underlying rule. Under the Tax Administration Act (opens in a new tab), businesses must keep records that are sufficient to enable their tax obligations to be readily ascertained by IRD. In plain English, that means enough detail for someone reviewing your business to understand your income, your expenses, and how you calculated the tax you paid, without having to guess or ask you to reconstruct anything from memory.
How long do NZ businesses need to keep tax records?
Generally 7 years from the end of the relevant tax year. This applies to income records, expense records, GST records and most other business documentation. See the full retention table for each record type.
- Keep records for 7 years from the end of the relevant tax year.
- A receipt or invoice is the primary record. Bank statements are supporting evidence only.
- Digital copies are accepted if they are a complete and accurate reproduction of the original.
- If you have staff, you also need wage and time records, PAYE records and signed employment agreements.
Why Record Keeping Actually Matters
Good record keeping isn't just about compliance for its own sake. It directly affects how much tax you pay, how easily you can claim deductions, and how stressful an IRD review or audit is if one ever happens to your business.
If you claim an expense but can't produce a receipt or invoice to support it, IRD can simply disallow the deduction. That means you end up paying tax on income you thought was reduced by a legitimate business cost, plus potentially penalties and interest if the disallowance happens after your return has already been filed and assessed.
On the flip side, businesses with genuinely good records tend to have smoother relationships with IRD generally. If IRD does ask questions, having clear, organised records means the conversation is short and factual, rather than dragging on because information needs to be tracked down or reconstructed after the fact.
Income and Sales Records
Every dollar your business earns needs to be recorded and traceable back to its source. This applies whether you're invoicing clients, selling products, or receiving payments through platforms like Uber, Shopify or Airbnb.
What to Keep
- Sales invoices issued to customers — showing date, amount, description of goods or services and GST if applicable.
- Cash sale records — till tapes, daily takings sheets or point of sale reports for cash based businesses.
- Bank deposit records — matching income received to what was actually banked.
- Platform income statements — Uber, Airbnb, Etsy, Shopify or similar platform reports showing gross earnings and any platform fees deducted.
- Contracts and agreements — for ongoing service arrangements, showing agreed pricing and terms.
Income received through less obvious channels, like a Facebook Marketplace sale for business stock, a cash payment for a small job, or overseas income through platforms like PayPal, still needs to be recorded even if no formal invoice was issued.
Expense and Purchase Records
This is the category most business owners are already somewhat familiar with, but the specific requirements around what counts as an acceptable record are often misunderstood.
What Counts as a Valid Expense Record
- Supplier invoices and receipts — showing the supplier name, date, description of what was purchased and the amount.
- Tax invoices for GST claims — if you're GST registered, invoices over 50 dollars must show the supplier's GST number to be claimable.
- Credit card and bank statements — useful as supporting evidence, but generally not sufficient on their own without the actual receipt or invoice.
- Asset purchase records — for anything being depreciated, including the purchase date and cost.
Confirms that money left your account.
Fuel for a work vehicle? Or coffee and pies for the family?
The primary record IRD generally wants.
Only the receipt shows exactly what was bought.
A bank statement showing a $60 transaction at a petrol station confirms that money left your account, but it doesn't confirm what was actually purchased. Many petrol stations also sell coffee, pies and snacks, so that $60 could just as easily be fuel for a work vehicle, or coffee and pies bought for the family on the way through. IRD generally wants the actual receipt as the primary record, with bank statements as supporting evidence rather than the main proof, because only the receipt shows exactly what was bought.
GST Records
If you're GST registered, there's an additional layer of record keeping specifically related to your GST returns, separate from your general income tax records, even though a lot of the underlying documents overlap.
GST Specific Records to Keep
- Copies of all GST returns filed with IRD
- Working papers showing how each GST return was calculated
- Tax invoices for all purchases where GST was claimed back
- Records of any GST adjustments, such as bad debts written off or private use adjustments
- Import and export documentation if your business deals with overseas transactions
If you use Xero or MYOB, most of this is generated automatically within the software, but it's still your responsibility to make sure the underlying source documents, like the actual supplier invoices, are also kept and not just the summarised software entries.
Related guide GST registration and filing in NZ →Wage and Employee Records
If you have staff, there's a specific and quite detailed set of records you're legally required to keep, covering both tax compliance and employment law obligations.
Required Payroll Records
- Wage and time records — hours worked, pay rates and total pay for each employee, for every pay period.
- PAYE deduction records — tax, ACC earner's levy, KiwiSaver and student loan deductions for each pay run.
- Payday filing submission records — confirmation of what was reported to IRD each payday.
- Employment agreements — signed agreements for every employee, which is a legal requirement separate from tax compliance.
- Leave records — annual leave, sick leave and public holiday entitlements and usage for each employee.
- IR330 tax code declarations — completed by each employee confirming their correct tax code.
Wage and time records are required under the Employment Relations Act, not just tax law, meaning both IRD and the Labour Inspectorate can request to see them. Missing employee records is one of the more serious compliance gaps we see, because it affects two separate areas of law at once.
Asset and Depreciation Records
Any significant asset your business owns and depreciates over time needs its own set of records, tracked separately from ordinary expense receipts, because these records need to remain accessible for the entire useful life of the asset, which can be many years.
What to Keep for Each Asset
- Original purchase invoice showing the cost and purchase date
- The depreciation method and rate applied
- A depreciation schedule showing the asset's value reducing each year
- Records of any improvements or additions that increase the asset's value
- Disposal records if the asset is later sold, including the sale price and date
This is particularly important for vehicles, equipment, and property related assets, where the depreciation claim continues for years after the original purchase, long after the original receipt might otherwise have been discarded.
How Long You Must Keep Business Records in NZ
This is the question we get asked most often, and the answer depends slightly on the type of record, though the general rule covers most situations.
| Record Type | Minimum Retention Period |
|---|---|
| General business and tax records | 7 years from the end of the relevant tax year |
| GST records | 7 years from the end of the relevant tax year |
| Wage and time records | 7 years, as required under employment law |
| Asset and depreciation records | 7 years after the asset is fully depreciated or disposed of |
| Company records (constitution, share register, minutes) | Life of the company plus 7 years after it's wound up |
| Property purchase and sale records | 7 years from disposal, longer if the bright line test period applies |
If your financial year ends 31 March 2026, records relating to that year generally need to be kept until at least 31 March 2033. It's worth building a simple system, like labelling folders by financial year, so you know exactly when each batch of records can finally be disposed of.
Digital Records and Cloud Storage
IRD accepts digital and electronic records, and for most modern small businesses this is by far the easiest and most reliable way to meet record keeping requirements, rather than relying on physical paper that can be lost, damaged or fade over time.
Digital Record Keeping Best Practices
- Use accounting software like Xero — which stores invoices, receipts and bank transaction records in one place, backed up automatically.
- Photograph paper receipts immediately — using apps like Xero's receipt capture, before the physical copy fades or gets lost.
- Keep digital copies in a clearly organised folder structure — organised by financial year and record type, whether in Xero, Google Drive or Dropbox.
- Maintain regular backups — cloud storage is generally reliable, but having records in more than one place adds an extra layer of protection.
- Ensure records remain readable — over the full retention period, meaning avoiding obscure file formats or software you might stop using in a few years.
You do not need to keep the original paper receipt once you've captured a clear digital copy, provided the copy is a complete and accurate reproduction of the original. This alone eliminates most of the shoebox problem for businesses that adopt digital record keeping properly.
What Happens If You Don't Keep Proper Records
Poor record keeping doesn't just create stress if IRD ever reviews your business, it has direct financial consequences that can apply even without any review happening at all.
Consequences of Inadequate Records
- Disallowed deductions — if you can't produce a receipt or invoice for a claimed expense, IRD can simply remove that deduction, increasing your taxable income and the tax you owe.
- Disallowed GST claims — GST claimed on expenses without a valid tax invoice can be reversed, meaning you owe that GST back plus potentially interest.
- Shortfall penalties — if IRD determines that inadequate record keeping led to an incorrect tax position, penalties ranging from 20 to 150 percent of the tax shortfall can apply.
- Estimated assessments — in serious cases where records are essentially non existent, IRD can estimate your income and tax liability themselves, which is rarely in your favour.
- Longer, more difficult reviews — a review that could have been resolved in a single conversation can drag on for months if records need to be reconstructed after the fact.
Real NZ Examples — Record Keeping in Practice
Example 1 — Priya, Online Store Owner, Auckland
Priya switched from keeping paper receipts in a folder to photographing everything through Xero's receipt capture app the same day she made each purchase. When her accountant needed to confirm a specific expense during her annual review, every record was searchable and instantly accessible, rather than requiring a physical search through months of paperwork.
Result: searchable recordsExample 2 — Raj, Building Company, IRD Review
Raj's construction company was selected for an IRD review of GST claims over a two year period. Because he'd kept organised digital copies of every tax invoice linked to his Xero transactions, his accountant was able to respond to IRD's information request within days rather than weeks, and the review concluded without any adjustments.
Result: no adjustmentsExample 3 — Meera, Consultant, Lost Receipts Cost Her Money
Meera had claimed several client entertainment expenses over a financial year but had only kept bank statement records, not the actual receipts. When her accountant prepared her return, several of these claims had to be excluded because a bank statement alone doesn't prove what was purchased or confirm the business purpose, meaning she paid more tax than necessary simply due to missing documentation.
Result: deductions lostRecord Keeping Checklist for NZ Small Businesses
Use this checklist to review your current record keeping system and identify any gaps:
Tick what you already do. Anything left unticked is a gap to fix.
Frequently Asked Questions
How long do NZ businesses need to keep tax records?
Generally 7 years from the end of the relevant tax year. This applies to income records, expense records, GST records and most other business documentation. Some records, like company constitutional documents, need to be kept for the life of the company plus 7 years after it winds up.
Do I need to keep the original paper receipt if I photograph it?
No, IRD accepts digital copies as valid records provided they are a complete and accurate reproduction of the original document. Using an app like Xero's receipt capture to photograph receipts at the time of purchase is an accepted way to meet record keeping requirements without keeping the physical paper.
What happens if I can't find a receipt for an expense I claimed?
IRD can disallow the deduction if you cannot produce supporting documentation. This means the expense is added back to your taxable income and you may owe additional tax. In more serious cases involving a pattern of inadequate records, shortfall penalties can also apply.
Are bank statements enough to prove a business expense?
Generally not on their own. A bank statement confirms that money left your account, for example $60 spent at a petrol station, but it doesn't confirm what was actually purchased. That $60 could be fuel for a work vehicle, or it could be coffee and pies bought for the family, since many petrol stations sell both alongside fuel. IRD expects the actual receipt or invoice as the primary record, with bank statements used only as supporting evidence.
What records do I need to keep if I have employees?
Wage and time records showing hours worked and pay for every pay period, PAYE deduction records, Payday Filing submission confirmations, signed employment agreements, leave records, and completed IR330 tax code declarations for each employee. These are required under both tax law and employment law.
Do sole traders need to keep the same records as companies?
As far as IRD is concerned, the record keeping requirements are the same for sole traders and companies. Both need income records, expense receipts, GST records if registered, and asset records for anything being depreciated.
Can I use cloud accounting software instead of physical filing?
Yes, and it's generally the easier and more reliable option. IRD accepts electronic records, and software like Xero automatically stores invoices, receipts and transaction history in one searchable place, provided the underlying source documents are also properly captured and retained.
What happens during an IRD review if my records are incomplete?
Incomplete records typically lead to disallowed deductions or GST claims for anything that can't be substantiated, and the review process itself tends to take longer since information may need to be reconstructed. In serious cases, IRD can issue an estimated assessment of your tax liability, which is rarely favourable to the business.
Official Sources and Further Reading
- IRD — Keeping business records (opens in a new tab)Official Inland Revenue guidance on the records businesses must keep, including electronic records.
- Tax Administration Act 1994, section 22 — Keeping of business and other records (opens in a new tab)The law behind the record keeping rule.
- Companies Office — Keeping company records (opens in a new tab)Extra record keeping duties for NZ companies.
This guide is general information for NZ small businesses, not personal tax advice. Always confirm the current rules with IRD or your accountant.
