Because someone asked me REALLY nicely, I've duplicated the Australian GST calculator and modified for New Zealand (15% GST).

The free online New Zealand GST and New Zealand GST Free Portion Calculator! Provided here for your use. Please make sure you report any issues with the calculator in the comments below. Enjoy your calculations!

Take note, this is the **New Zealand GST Calculator**, which is 15%. Please ensure you let me know if there is any issues with it's calculations in the comments below.

Please feel free to use this script as your require, if you wish to have this script on your own website please post an acknowledgement and link back to this page.

Using the manual calculations of the amount $15 I get GST $1.96. I then tried your auto calculator. I put $15 asking it to add GST . It has a different GST amount $2.25. It has the same total amount. Not sure which one is correct? Love the giant submit button….very nice ðŸ™‚

Hi Vicky! Thanks for stopping by! You’re using the wrong button ðŸ˜€

If you have $15 that’s inclusive of GST, and you want to find out what the GST portion is, click the Subtract GST button. That will give you your $1.96 in GST.

If for some reason you have a price that doesn’t include GST, and you need to add it on, that’s what the Add GST button will calculate (Your amount you enter + GST giving you a new total of $17.25

Subtract may be slightly misleading – when really it means “Calculate the GST of this amount”. The total value will ensure nothing has been add/taken away from the amount you still need to end up with.

Thanks =D

and OH! That giant submit button! I love it too =D I love Karl Short’s web designs. He’s always got really nice butttons and backgrounds alike ðŸ˜€

One day I might just ask him _really_ nicely to theme my GST tables and buttons too. ðŸ˜€

Hi, is there a download version of this GST NZ Calculator?

Great Calculator.

No sorry. Online javascript form only. You may be able to try and save the page to your desktop. I haven’t gotten around to making apps for mobile devices or anything as such either.

You should make this for opencart I would definitely buy it are you thinking of making this in the very near future? This would be so helpful to have it linked to my opencart. Please please pretty please make one

thanks

Toni

Howdy Toni,

What do you mean? Link to this within Opencart? Opencart has selectively tax rates. CONFUSED ðŸ™‚

Hi, so if my monthly takings is 14876.20 I’d pay 1940.37 in gst to the ird? if this is correct thank you..

I believe that is correct, yes – but please ensure you run that past an Accountant over in NZ – I have no idea how it works over there.

why is the gst rate 15 if you add it on but 13.04 if you subtract it?

Unsure! Let me have a look and see what’s happening.

Not actually sure what you mean here Nicole.

If you have $15 and add 15% – the total amount is $17.25. (15% of 15 is $2.25 which is the GST amount).

If you have $15 and want to find how much GST is in it (or subtract), you’d use the following formula; Multiply the full GST inclusive price by 3 then divide that result by 23.

15*3 (is 45) / 23 = 1.96 (rounding up after the second decimal place).

So your total won’t change for subtracting – we have $15 including GST – and the calculator simply breaks it apart into how it’s made up. $13.04 for the non-gst part, and $1.96 for the GST part.

Make sense?

I would just like to point out that this calculator was create exactly one year and one month after the Australian GST Calculator…. cause that’s… interesting… >_>