In Australia, you can generally backdate your GST registration for up to 4 years from the current date, provided you were eligible to be registered during that time. Backdating allows you to claim input tax credits on business expenses, but you must also pay any GST owed on sales made during that period.
Backdating your GST registration
Backdating a GST registration is limited to 4 years. This means, unless there is fraud or evasion: we can't backdate your GST registration by more than 4 years. you are not required to be registered before that date.
4-year credit time limit
If you account for GST on a cash basis, the earliest tax period in which you could claim a GST credit for a purchase is the tax period in which you make the payment. If you make the payment over multiple tax periods, the 4-year credit time limit applies separately to each part of the payment.
Barring of GST Return on expiry of three years
The GST network issued another advisory on 7th June 2025, implementing the rule of time-barring of GST return filing beyond three years from the due date. By this update, taxpayers will not be able to file GST returns after three years from the due date of such return.
It starts from the day you become entitled to the credit, typically the date of the tax invoice or the date the payment is made, depending on your accounting method. After four years, you can no longer amend or include a claim for that GST credit in your Business Activity Statement (BAS).
The 'five year rule' states that residential premises are not considered to be 'new' if they have been rented out as residential premises for five or more years since they first became residential premises, or were last built or substantially renovated.
If you are GST-registered you may be able to claim a credit for GST purposes when you buy secondhand goods. If the seller is not registered for GST or the goods are private (exempt), there is no GST charged.
– Time limit to issue notice: 3 years from the due date of filing annual return for the relevant year. – Time limit to pass the order: 3 years from the due date of annual return. Example: For FY 2021–22, the time limit to issue notice is 31st December 2025 (assuming annual return due date is 31st December 2022).
Therefore, upon non –filing of GST returns or missing out the GST due dates, the GST law prescribes a general penalty. The maximum penalty that may be imposed is Rs. 5,000. The taxpayer will be required to pay interest on late payment of GST at a rate of 18% annually in addition to the late payment penalty.
Below is a summary of the key updates: Old deadline: September 30, 2025. New deadline: October 31, 2025.
If you're registered for GST, you can generally claim back any GST included in the price of things you've bought for your business. These are GST credits. If, for any tax period, your GST credits are higher than the amount of GST your business has to pay the ATO, you could get a refund.
This is subject to certain conditions including the date of sale of the goods should not exceed 6 months to the date of implementation of the GST and the goods should be returned within 6 months from the date of implementation of the GST.
Section 16(2) and Rule 37
If he made payment within 180 days to the supplier within 180 days than no reversal is required. If he made proportionate payment to supplier with GST within 180 days then he has to reverse ITC proportionately . If No payment is made within 180 days, then whole the ITC has to be reversed.
If the ATO discovers you've been charging GST without being registered, you could face: Refunding GST to Customers: You'll need to pay back the GST you've charged, even if you've already spent it. Financial Penalties: The ATO may hit you with fines, interest charges, and audits.
The 10-year limitation period rolls forward every January 1. For GST/HST interest related requests, please see the section above called Interest requests.
Did you know the ATO has a strict 4-year deadline on claiming GST credits? Don't let your business lose thousands in unclaimed cash. Read the Trinity Accounting Practice guide to Section 93-B and BAS compliance.
Do you need a Chartered Accountant (CA) for GST filing? No, a Chartered Accountant (CA) is not required to submit a monthly Goods and Services Tax (GST) return in India. The GST return filing procedure is made to be simple to use and enables taxpayers to submit their returns on their own.
Non/Late Payment
A 5% penalty will be levied on the amount of tax unpaid by the due date and an additional penalty of 2% per month on tax remaining unpaid after 60 days from the due date of the prescribed accounting period (capped at a maximum of 50% of the outstanding tax) may also be imposed.
Starting 1 July 2025, the GST portal will permanently disable the filing of any GST return that is more than three years past its original due date. This restriction arises from amendments introduced under the Finance Act, 2023.
Maximum marginal rate is the highest rate of tax at any income level. This means for those with incomes between Rs 2 crore and Rs 5 crore, 39% will be the highest applicable tax rate, and for those with incomes above Rs 5 crore, it will be 42.74% — the highest tax rate since 1992.
The credit can be claimed only before November of the next financial year or the filing of the annual return, whichever is earlier. The time limit for claiming ITC is the earlier of the next financial year's November return due day or filing the annual returns of this year.
Further, Tribunal has the power to condone delay (of up to 3 months in case of appeals or 45 days in case of cross objections, beyond the mandatory period) on being satisfied that there is sufficient cause for the delay.
Calculate your GST credits using the direct approach or global accounting method. You can claim GST credits for your purchases of second-hand goods even if the price you paid did not include GST.
Buying from non-registered suppliers
If you buy goods or services from an unregistered person, they will not charge GST. This normally means you cannot claim GST on the purchase. For some special supplies, such as secondhand goods, you may still be able to claim a GST adjustment.