I made a mistake in my business GST BAS quarters from February 2024 to April 2025. In those quarters I had monthly payments for business equipment on finance under a rental agreement, that I reported incorrectly on in my BAS. I was supposed to report GST on Expenses but put them down as BAS Excluded on accident as I forgot it was a Rental Agreement and no GST was claimed at the commencement of this agreement like you would normally when financing equipment.
After the April 2025 quarter this mistake was rectified and I have since started claiming the GST on the finance payments, but I recently spoke to a friend about this who said I should look into how I can get the GST return for those mistakes as it adds up to roughly $2300 from 14 months of finance payments.
Is this possible to do and if so how would I go about contacting the ATO to organise as they don't seem to have a dedicated team for GST BAS mistakes.
*I do all my accounting work myself*
Thank you and kind regards