GST Calculator Australia (Add or Remove 10% GST)

Goods and Services Tax (GST) is a 10% consumption tax applied to most goods and services sold in Australia. It was introduced in 2000 and is administered by the Australian Taxation Office (ATO). Businesses registered for GST must include GST in the price of taxable goods and services and report it through their Business Activity Statement (BAS).

GST-registered businesses collect GST from customers when they make a sale. This is known as GST collected (output tax). At the same time, businesses can claim GST credits (input tax credits) on GST included in business purchases and expenses.

At the end of each reporting period — usually monthly or quarterly — businesses submit a BAS and calculate the difference between GST collected and GST credits. If GST collected is higher, the business pays the difference to the ATO. If GST credits are higher, the business receives a refund.

Some goods and services are GST-free, meaning no GST is charged but businesses can still claim credits. Examples include basic food, most medical services, and exports. Other supplies are input taxed, such as residential rent and most financial services, where GST is not charged but businesses cannot claim GST credits.

Understanding how GST is calculated can help businesses set correct prices, manage cash flow, and avoid BAS reporting errors. A GST calculator makes it easy to add GST to a price or remove GST from a GST-inclusive amount, ensuring accurate tax calculations for invoices and accounting.