Cash vs Accruals Accounting for GST: Which Should You Use?

Introduction

For Australian businesses registered for Goods and Services Tax (GST), choosing the correct accounting method is a foundational decision that affects cash flow, compliance, and financial reporting. The Australian Taxation Office (ATO) permits two primary methods: cash accounting and accruals accounting. While the choice may seem straightforward, the implications are nuanced, especially for sole traders, small business operators, bookkeepers, and importers. This pillar article provides a definitive reference on cash versus accruals accounting for GST, covering eligibility, practical applications, and common pitfalls. By the end, you will have the knowledge to make an informed decision and use the GST calculator suite at gstcalculatorau.com to manage your obligations effectively.

What Are Cash and Accruals Accounting for GST?

Cash Accounting

Under the cash accounting method, GST is accounted for when cash is actually received or paid. You report GST on sales when your customers pay you, and you claim input tax credits when you pay your suppliers. This method aligns GST reporting with your bank balance, making it easier to manage cash flow.

Accruals Accounting

Under the accruals accounting method, GST is accounted for when you issue an invoice or receive an invoice, regardless of when payment occurs. You report GST on sales at the time you issue a tax invoice, and you claim input tax credits when you receive a tax invoice from your supplier. This method matches income and expenses to the period they are incurred, providing a more accurate picture of business performance.

Key Differences at a Glance

Eligibility Criteria for Each Method

Who Can Use Cash Accounting?

The ATO allows cash accounting for businesses with a GST turnover of less than $10 million per year. GST turnover includes all sales (excluding GST) from your business, including connected entities. Sole traders and small businesses typically meet this threshold. However, certain entities are excluded from using cash accounting, including:

• Businesses that are part of a GST group with a member using accruals
• Entities that are required to use accruals under specific ATO rulings (e.g., some government agencies)
• Businesses that voluntarily choose accruals and cannot switch back without ATO approval

Who Can Use Accruals Accounting?

Any GST-registered business can use accruals accounting, regardless of turnover. It is mandatory for businesses with a GST turnover of $10 million or more, and for those that are part of a GST group that uses accruals. Many larger businesses prefer accruals because it provides a more accurate financial picture.

Expert Tip: If your business is close to the $10 million threshold, consider whether you expect growth. Switching methods later may require ATO approval and can be administratively burdensome.

How to Choose Between Cash and Accruals

Cash Flow Considerations

For businesses that often wait for payment (e.g., trade creditors, invoicing on 30-day terms), cash accounting can be a lifeline. You only remit GST to the ATO after you have received the money, reducing the risk of a cash shortfall. Conversely, if you pay suppliers promptly but customers delay, accruals may create a GST liability before you have the funds.

Record-Keeping and Complexity

Cash accounting is simpler: you only need to track bank transactions. Accruals requires maintaining an accounts receivable and payable ledger, tracking invoice dates, and managing adjustments for credit notes and bad debts. Bookkeepers often recommend cash accounting for micro-businesses and sole traders with straightforward operations.

Impact on Financial Reporting

If you prepare financial statements for investors or lenders, accruals accounting provides a more accurate view of profitability. However, for internal management, cash accounting may be more intuitive. The ATO does not require consistency between GST method and income tax method, but many businesses align them for simplicity.

Practical Examples for Sole Traders and Small Businesses

Example 1: Sole Trader Using Cash Accounting

Jane runs a landscaping business. She invoices a client $1,100 (including $100 GST) on 1 March but does not receive payment until 15 April. Under cash accounting, Jane reports the $100 GST on her April BAS (when payment is received). She also pays her supplier $550 (including $50 GST) on 20 March and claims the $50 input tax credit on her March BAS. This method helps Jane avoid paying GST before she has the cash.

Example 2: Small Business Using Accruals Accounting

Tom operates a retail store with $12 million turnover, so he must use accruals. He issues a tax invoice for $2,200 (including $200 GST) on 1 June, but the customer pays on 15 July. Tom reports the $200 GST on his June BAS. He also receives a supplier invoice for $1,100 (including $100 GST) on 5 June and pays on 30 June. He claims the $100 input tax credit on his June BAS. Tom’s BAS reflects the economic activity of June, even though cash flows differ.

Special Rules for Importers

GST on Imported Goods

Importers must account for GST on imported goods at the time of importation, regardless of their chosen accounting method. The GST is paid to the Australian Border Force (ABF) before the goods are released. However, for input tax credits, the timing depends on the method:

• Cash accounting: Claim the input tax credit when you pay the supplier (including the GST component).
• Accruals accounting: Claim the input tax credit when you receive the supplier’s tax invoice, even if you haven’t paid yet.

Importers often prefer accruals to claim credits earlier, improving cash flow after the initial outlay.

Deferred GST Scheme

Eligible importers can use the deferred GST scheme to defer payment of GST on imports until the next BAS lodgment. This scheme is available to businesses that are GST-registered and lodge monthly or quarterly BAS. It applies regardless of the accounting method used.

Important: The deferred GST scheme does not change the timing of input tax credits. You still claim credits according to your accounting method.

Adjustments and Reversals

Bad Debts

Under cash accounting, bad debts are not an issue because you never report GST on unpaid invoices. Under accruals, if you have reported GST on a sale and the customer does not pay, you can claim a bad debt adjustment on your BAS. You must write off the debt and meet ATO conditions.

Credit Notes

Both methods require adjustments when you issue a credit note. Under cash accounting, you adjust GST in the period you refund the customer. Under accruals, you adjust in the period you issue the credit note.

Changing Methods

Switching from cash to accruals (or vice versa) requires ATO approval. You must apply in writing and demonstrate a valid reason. The ATO may also require you to make a transitional adjustment to account for outstanding invoices and payments.

GST Calculator & Tools

The GST Calculator Suite at gstcalculatorau.com helps you manage GST calculations for both cash and accruals methods. Use the GST Calculator to determine GST-inclusive or exclusive amounts, and the BAS Calculator to estimate your quarterly or monthly GST liability.

Step-by-Step Guide

1. Select your accounting method (cash or accruals) in the calculator settings.
2. Enter your total sales (including or excluding GST) for the period.
3. Enter your total purchases (including or excluding GST) for the period.
4. The calculator automatically computes GST on sales, input tax credits, and net GST payable or refundable.
5. Review the sample calculation table below for a typical scenario.

Sample Calculation Table

Note: The calculator assumes all transactions are within the same BAS period. For real-world use, adjust for timing differences.

Common GST Mistakes to Avoid

• Mixing methods: You must use the same method for all transactions. Do not switch between cash and accruals for different sales or purchases.
• Ignoring the $10 million threshold: If your GST turnover exceeds $10 million, you must use accruals. Failing to switch can result in penalties.
• Forgetting bad debt adjustments: Accruals users must claim bad debt adjustments promptly. Missing them overstates GST liability.
• Incorrectly timing input tax credits: Under cash accounting, you cannot claim a credit until you have paid the supplier. Under accruals, you cannot claim until you have a valid tax invoice.
• Not reconciling BAS with bank statements: Cash accounting requires careful reconciliation to ensure GST is reported only when cash moves.
• Overlooking import GST: Importers must account for GST at the border regardless of method. Failing to do so leads to customs delays and penalties.

Conclusion

Choosing between cash and accruals accounting for GST is a strategic decision that impacts your cash flow, compliance burden, and financial reporting. Sole traders and small businesses with turnover under $10 million often benefit from the simplicity of cash accounting, while larger businesses and those seeking accurate financial statements may prefer accruals. Importers must navigate additional rules but can leverage the deferred GST scheme. Use the GST calculator suite at gstcalculatorau.com to model your scenarios, and always consult a registered tax agent for advice tailored to your situation. For further reading, explore our articles on BAS preparation and GST for small business.