Filing Accurate GST Returns in New Zealand
- Peter Eastmure
- Nov 29, 2025
- 4 min read
Filing GST returns accurately is essential for businesses operating in New Zealand. The Goods and Services Tax (GST) is a value-added tax applied to most goods and services sold in the country. Understanding how to file GST returns correctly can save you from penalties, improve your cash flow management, and keep your business compliant with Inland Revenue Department (IRD) requirements. This guide will walk you through the key steps and considerations for filing GST returns successfully.
Understanding the Basics of Filing GST Successfully
GST is charged at a rate of 15% on most goods and services in New Zealand. Businesses registered for GST must file returns regularly, usually every month or quarter, depending on their turnover and filing preferences. Filing GST returns involves reporting the GST you have charged your customers and the GST you have paid on business expenses.
To file GST returns successfully, you need to:
Keep accurate records of all sales and purchases.
Calculate the GST collected and GST paid.
Submit your GST return to the IRD by the due date.
Pay any GST owed or claim a refund if you have paid more GST than collected.
Using accounting software or professional help can simplify this process. Many businesses use software that integrates with IRD systems, making filing faster and reducing errors.

Key Steps for Filing GST Successfully in New Zealand
Filing GST returns successfully requires a clear process. Here are the essential steps:
Register for GST: If your business turnover exceeds NZD 60,000 in a 12-month period, you must register for GST. You can also register voluntarily if your turnover is below this threshold.
Maintain Detailed Records: Keep invoices, receipts, and other documents that show GST charged and paid. This includes sales invoices, purchase receipts, and import documents.
Calculate GST Payable or Refundable: Add up the GST on your sales (output tax) and subtract the GST on your purchases (input tax). The difference is what you owe or can claim back.
Complete the GST Return Form: Use the IRD’s online services or approved software to fill out your GST return. Ensure all figures are accurate and match your records.
Submit on Time: File your return by the due date to avoid penalties. Most businesses file quarterly, but some may file monthly or annually.
Make Payment or Claim Refund: Pay any GST owing promptly. If you have a refund, the IRD will process it after reviewing your return.
Following these steps carefully will help you avoid common mistakes such as underreporting sales or overclaiming expenses.

Do you have to pay GST if you earn under $60,000?
One common question is whether you need to pay GST if your business earns under NZD 60,000 annually. The answer is generally no. If your turnover is below this threshold, you are not required to register for GST. However, you can choose to register voluntarily if you want to claim GST on your business expenses.
Voluntary registration can be beneficial if you have significant input tax credits to claim or if you want to appear more established to clients. But it also means you must comply with all GST filing and payment obligations.
If you are not registered for GST, you cannot charge GST on your sales or claim GST on your purchases. This means your prices may be more competitive, but you also miss out on reclaiming GST paid on business costs.
It is important to monitor your turnover regularly. If your income exceeds NZD 60,000 in any 12-month period, you must register for GST within 21 days.

Common Mistakes to Avoid When Filing GST Returns
Filing GST returns can be straightforward, but mistakes can lead to penalties or audits. Here are some common errors to watch out for:
Late Filing or Payment: Missing deadlines can result in fines and interest charges.
Incorrect Calculations: Double-check your GST calculations to avoid underpayment or overpayment.
Mixing Personal and Business Expenses: Only business-related expenses should be included in your GST return.
Not Keeping Proper Records: The IRD requires you to keep records for at least seven years.
Claiming GST on Non-Business Items: GST can only be claimed on goods and services used for business purposes.
Failing to Update GST Status: If your turnover changes, update your GST registration status promptly.
To avoid these pitfalls, consider using accounting software or consulting a tax professional. Regularly reviewing your GST processes can also help maintain accuracy.
Tips for Streamlining Your GST Return Process
Efficient GST return filing saves time and reduces stress. Here are some practical tips:
Use Accounting Software: Automate calculations and generate reports easily.
Keep Digital Records: Scan and store invoices and receipts electronically.
Set Reminders: Mark GST filing and payment dates on your calendar.
Reconcile Regularly: Match your bank statements with your accounting records monthly.
Seek Professional Advice: A tax advisor can help optimize your GST strategy and ensure compliance.
By implementing these tips, you can make filing GST returns a smooth and manageable task.
For more detailed guidance on filing your gst returns, visit the Eastmure website.
Staying Compliant and Confident with Your GST Returns
Filing GST returns accurately is crucial for maintaining your business’s financial health and legal compliance. By understanding your obligations, keeping thorough records, and following best practices, you can file your GST returns with confidence.
Remember, the IRD offers resources and support to help businesses meet their GST requirements. Don’t hesitate to reach out if you need assistance or clarification.
With the right approach, filing GST returns can become a routine part of your business operations, helping you focus on growth and success.
This guide provides a comprehensive overview of filing GST returns successfully in New Zealand. Use it as a reference to keep your business compliant and avoid common pitfalls.




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