# GST is not calculating correctly

**URL:** <https://forum.manager.io/t/gst-is-not-calculating-correctly/45659>\
**Category:** Uncategorized\
**Created:** [February 28, 2023, 9:45pm UTC](https://forum.manager.io/t/gst-is-not-calculating-correctly/45659 "2023-02-28T21:45:42Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Helegad](https://avatars.discourse-cdn.com/v4/letter/h/ecd19e/32.png) [@Helegad](https://forum.manager.io/u/Helegad)\
**Post date:** [February 28, 2023, 9:45pm UTC](https://forum.manager.io/t/gst-is-not-calculating-correctly/45659/1 "2023-02-28T21:45:42Z")

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![image](https://us1.discourse-cdn.com/flex019/uploads/manager1/original/3X/4/0/40c6e6ae0c0f1ae5f066e46779b6fd7b5257d27d.png)

10% of $200 is $20, not $18.18. I’ve tried modifying the hourly rate to $72 so that it will add $8 on top but the calculation is still off; the total comes to $198 instead of $200.

What is going on here?

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**Author:** ![Patch](https://avatars.discourse-cdn.com/v4/letter/p/a183cd/32.png) [@Patch](https://forum.manager.io/u/Patch)\
**Post date:** [February 28, 2023, 9:50pm UTC](https://forum.manager.io/t/gst-is-not-calculating-correctly/45659/2 "2023-02-28T21:50:04Z")

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> [@Helegad](#):
>
> 10% of $200 is $20,

so for a sale of $200 GST free price the GST inclusive price would be $220.

That is not your case though.  
Your case is a GST inclusive price of $200  
So a GST free price of 200-18.18= $181.82  
For which the gst is $18.18

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**Author:** ![Wornout](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.manager.io/wornout/32/19913_2.png) [@Wornout](https://forum.manager.io/u/Wornout)\
**Post date:** [February 28, 2023, 9:59pm UTC](https://forum.manager.io/t/gst-is-not-calculating-correctly/45659/3 "2023-02-28T21:59:24Z")

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Ha Ha it gets people every time, ours is 15% and there is 2 different equations to use for inclusive or exclusive. When I try and explain this people think I am nuts.  
Inclusive is charge 100 so you =(100_3)/23 or exclusive= (100_0.15) which gives you the GST content

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**Author:** ![Joe91](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.manager.io/joe91/32/35781_2.png) [@Joe91](https://forum.manager.io/u/Joe91)\
**Post date:** [February 28, 2023, 10:46pm UTC](https://forum.manager.io/t/gst-is-not-calculating-correctly/45659/4 "2023-02-28T22:46:44Z")

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[https://www.manager.io/guides/9502](https://www.manager.io/guides/9502)

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**Author:** ![Helegad](https://avatars.discourse-cdn.com/v4/letter/h/ecd19e/32.png) [@Helegad](https://forum.manager.io/u/Helegad)\
**Post date:** [February 28, 2023, 11:23pm UTC](https://forum.manager.io/t/gst-is-not-calculating-correctly/45659/5 "2023-02-28T23:23:20Z")

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Gosh, I need another coffee. Thank you.

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**Author:** ![Ealfardan](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.manager.io/ealfardan/32/63166_2.png) [@Ealfardan](https://forum.manager.io/u/Ealfardan)\
**Post date:** [March 1, 2023, 8:02am UTC](https://forum.manager.io/t/gst-is-not-calculating-correctly/45659/6 "2023-03-01T08:02:38Z")

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Closed on March 1, 2023, 8:02am UTC