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Deltamorph(Initiate)Initiate
24 Apr 2026

Hi all,

I run an online trading card reselling business and regularly purchase inventory from private individuals who are not GST-registered. I understand Division 66 allows a deemed input tax credit in these cases and GST is calculated on the margin when the goods are resold.

I just want to confirm my understanding of the mechanics:

If I purchase an item for $70 from a private seller, I would be entitled to a deemed input tax credit of $70/11 = $6.36.

If I then sell the item for $100, the margin is $30, and GST payable would be $30/11 = $2.73.

This results in a net GST credit position of $3.63.

My question is:

  • Is this outcome correct under Division 66?
  • If so, is it expected that businesses operating on typical resale margins (e.g. buying at ~70% of resale value) may often be in a net GST refund position?

I assume there are practical limitations (e.g. the $300 per item rule, record-keeping, or anti-avoidance considerations), but I’d appreciate confirmation on whether the above treatment is technically correct.

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2 replies
39 views
2 replies

Most helpful response

Most helpful reply

YellowPotato(Taxicorn)Taxicorn
24 Apr 2026

Not sure about division 66, but I strongly suggest you see a registered tax agent to make sure what you have been doing is correct



If I then sell the item for $100, the margin is $30, and GST payable would be $30/11 = $2.73.

  • But I don't think you calculate the GST like that
  • Pretty sure it's GST on the SALES (proceeds) not the profit
  • Your calculation essentially claimed the GST credit $6.36 twice, resulting you a net GST refund
    • -70/11 + 30/11 = -70/11 + (100-70)/11 = -70/11 + 100/11 - 70/11 = -3.63. Your 3.63 GST credit
    • Double $6.36 gst credit
  • Correct calculation:
    • 100/11 = 9.09 GST debit
    • 70/11 = 6.36 GST credit
    • 9.09 - 6.36 = $2.73 GST debit
  • i.e. Generally if you're collecting GST on sales, if business is in profit then you are paying GST; if business is making a loss then you are receiving GST refunds

All replies

Most helpful reply

YellowPotato(Taxicorn)Taxicorn
24 Apr 2026

Not sure about division 66, but I strongly suggest you see a registered tax agent to make sure what you have been doing is correct



If I then sell the item for $100, the margin is $30, and GST payable would be $30/11 = $2.73.

  • But I don't think you calculate the GST like that
  • Pretty sure it's GST on the SALES (proceeds) not the profit
  • Your calculation essentially claimed the GST credit $6.36 twice, resulting you a net GST refund
    • -70/11 + 30/11 = -70/11 + (100-70)/11 = -70/11 + 100/11 - 70/11 = -3.63. Your 3.63 GST credit
    • Double $6.36 gst credit
  • Correct calculation:
    • 100/11 = 9.09 GST debit
    • 70/11 = 6.36 GST credit
    • 9.09 - 6.36 = $2.73 GST debit
  • i.e. Generally if you're collecting GST on sales, if business is in profit then you are paying GST; if business is making a loss then you are receiving GST refunds

Deltamorph(Initiate)Initiate
24 Apr 2026

Thanks mate, i had a look at the actual division 66 as well, and it says i claim GST on the stock that i purchase that is deemed as creditable acquisition, so seems like my calc above is wrong. I knew chatGPT was giving me bad advice!


Prima-facie it seems like:

1) As long as stock is deemed to be in division 66, then i can claim input tax credit on the purchase;

2) I would then pay GST on the sales as usual

3) Net effect is that division 66 is allowing me to "pay GST on gross margin", by giving me the artificial credit created from private purchases - this makes sense because without this, low margin business who buys from private sellers like mine will be wiped out of this planet!


Does that sound reasonable?

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