Australian GST Calculator
19 Oct 2008 T05:27:12am - Dazz - 123 Comment(s)
The free online GST and 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!
I wrote this simple little script in JavaScript to help me calculate Australian GST (10%) today. Being such a useful little script, I thought I would post it.
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.
Great hlpe, will use this tool every day!
Wow you are a genius, thanks so much.
OMG Dazz, you made something people actually find useful! You sir, are a god.
Shock horror, I know xD
I am so glad I stumbled across this it has made my night so much easier!!! U rock
Are you sure your formula is correct?
E.g. 2280 – 10% = 2052
but on your table at the top it shows = 2072.73
Confused :S
You can’t “minus” 10% to calculate what GST is included.
Lets work with $3000
3000 * 1.1 (Amount + 10%) is 3300 Total Including GST
3000 * 0.1 (10%) is 300 is the GST amount.
Going backwards with your math you’ll see an issue.
3300 * 0.1 (Amount of calculated GST to remove) is 330.
3300 – 330 is 2970 – Oops, that’s not right. We started with 3000.
THUS – In order to calculate the amount of GST that’s inside of an amount with GST, we divide by 11.
3300 / 11 = 300 GST Amount.
3300 – 300 = 3000 Back to our amount before GST.
http://www.gststartup.gov.au/educational/action_guide/impact/files/impact_3_1.pdf
Go look at page 9, for working out how GST-Exclusive, and GST-Inclusive calculations work.
So back to your example;
Inclusive GST:
2280 / 11 = 207.2727
2280 – 207.2727 = 2072.7272
Yeap, realised that – I always use the formulas you described but that particular day got stuck to thinking why the answer cant be the same if you simply minus 10% from the total if GST usually is 10% anyway?
Thanks Dareen and keep up the good work.
Cheers,
Anya
THIS ROCKS!!!!
I’ve been pulling my hair out trying to calculate GST, as I’m just starting a new business. This is the best!!! BIG THANK YOU!!!!!
love it. thanks
)
This site is so easy to use and it saves me so much time.
Thank you Darren
Regards Chris
Have just spent hours racking my brain over my accounts and here you are THANKS HEAPS YOU ROCK!!!!
Love it! Great work. Thanks.
Awesome!!!!
What an awesome website, thanks for your help!
Excellent. Now if only I had of found this a few years back…
Thanks a lot!
Saved me a lot of time.
You should do one too for the more complicated numbers like the NZ GST.
If you remind me over the weekend I promise it shall be done
NZ is at 15% now right?
And here it is
http://darrennolan.com/2010/11/19/new-zealand-gst-calculator/
Hi Darren, thanks for the calculators use them everytime I need to invoice someone… hopefully $3.50 buys you a great coffee in your part of the world
I enjoy things that allow me to use minimal brain cells at work so that I can use them more efficiently AFTER work when I’m gaming on and shooting peepz like crazy. So thanks muchly for saving my brain cells.
Thank you for this great site – it’s so helpful -Saves loads of time and brain power!
Dalllllen!
You now come up as the second result in a Google search…
You’ve changed….
Does it calculate…. over 9000?
$9001 not including GST = $9901.10 including GST.
Yes, the calculator works over 9000. That’s how epic it is. =D
hi, if I make $100000 how much do I have to pay GST. I am a field worker( Telephone cable installer ). is that all do I have to pay as tax?
thanks
It’s best to get in touch with an accountant. Depends how your registered, how much is made etc. GST is only a part of managing Aussie Tax.
As before, get in touch with an accountant. They’ll be able to tell you more.
Dallen didnt renew his WoW account after calculating the GST on his subscription fee…
Fairly sure there is no GST on wow subscription fees =P
Why aren’t you on WoW anymore Dallen
iono. Some really cool peeps left and wasn’t worth playing anymore.
Hey thats not even how you spell my name Moller!
Son of a!
Dallen!
Moller stumbled on your site by accident and due to inability to calculate sums more complex than what can be added by fingers and toes!!!
Impressed that you are the first site to pop up on google when you type GST Calculator.
heh. =D
I have used this great GST calculator lots since I found it – loving your work my friend!!
Excellent – helps greatly.
Correct ‘calculator’ – typo
also it’s should be its.
lol. Will try to. Where are you looking for these typos.
I _think_ I found those two issues. Tim pointed out the Calculator typo some time ago, I thought I fixed it up. PERHAPS NOT.
Thank you Darren…GST makes me blonde..you are a lifesaver..