GST / HST / VAT Calculator 2026

What You Need to Know

How It Works

This calculator works in two directions, depending on which number you already have in hand. If you know a price before tax and want to see what you will pay at the till, choose Add Tax to Price, and the calculator multiplies your amount by the applicable rate and adds that on top. If you have a receipt or invoice total that already includes tax and want to work backward to the original price, choose Remove Tax from Total instead, and the calculator divides your total by one plus the tax rate as a decimal to isolate the pre-tax amount.

For Canada, the calculator applies the correct combined rate for whichever province or territory you select, since the country runs two different layers of sales tax that don’t work the same way everywhere. Alberta, the territories, and a couple of others only charge the federal five percent GST, while Ontario, New Brunswick, Nova Scotia, Newfoundland and Labrador, and Prince Edward Island use HST, a single blended rate that folds the federal and provincial portions together. British Columbia, Manitoba, and Saskatchewan keep GST and their own provincial sales tax as two separate charges, and Quebec runs its own QST system alongside the federal GST rather than either of those. For the UK, you can choose between the standard, reduced, and zero VAT rates depending on what you’re buying, and Australia’s GST is applied as a flat ten percent since that one doesn’t vary by state. For the United States and any other country not listed here, you can enter the exact rate for your location, since sales tax there is set locally rather than at a national level.

Frequently Asked Questions

What is the difference between GST, HST, and PST in Canada? GST is the five percent federal tax charged everywhere in the country, while PST is an additional provincial tax charged on top of it in British Columbia, Manitoba, and Saskatchewan. HST combines both layers into a single blended rate and is used in Ontario and the four Atlantic provinces. Quebec is the exception, running its own QST alongside the federal GST rather than using either PST or HST.

How do I remove tax from a total that already includes it? Divide the tax-inclusive total by one plus the tax rate written as a decimal. For a total of one hundred and thirteen dollars with thirteen percent HST, dividing by 1.13 gives a pre-tax price of one hundred dollars, and the gap between the two figures is your tax amount. The Remove Tax from Total mode above does this automatically once you enter your total and select the right rate for your region.

What are the UK VAT rates? The UK charges VAT at three different rates. Twenty percent is the standard rate and covers most goods and services. Five percent is a reduced rate that applies to specific items such as home energy and children’s car seats. Zero percent applies to most food, children’s clothing, books, and newspapers, and although no VAT is actually charged on these, they remain part of the VAT system, which is what allows registered businesses to reclaim VAT on related purchases.

Does Australia charge GST on everything? No. Australia’s ten percent GST applies broadly, but a meaningful list of items are GST-free, including most fresh groceries, many medical and health services, childcare, education services, and exported goods. Financial services and residential rent sit in a slightly different category again, since they’re input-taxed rather than GST-free, meaning no GST is charged but the supplier also can’t claim back GST credits on their own related costs.

How does sales tax work in the United States? The US doesn’t have a federal sales tax at all. Instead, each state sets its own rate, and cities or counties often add their own on top of that. Rates commonly land between four and eight percent at the state level, though combined local rates can push past ten percent in some areas. Five states, Alaska, Delaware, Montana, New Hampshire, and Oregon, charge no state sales tax whatsoever.

Do I need to register to charge GST or VAT for my own business? That depends on your annual revenue and where you’re operating. Canadian businesses generally need to register for GST or HST once they cross thirty thousand dollars in annual revenue. The UK’s VAT registration threshold sits at ninety thousand pounds for the 2026 tax year, and Australia requires GST registration once turnover reaches seventy five thousand dollars. This calculator is built for everyday consumer and reference use, so if you’re weighing up your own business’s obligations, it’s worth checking with an accountant who can look at your specific situation.

What You Need to Know

Sales tax rates do shift from time to time, and this calculator reflects the rates in effect for 2026, so it’s worth double-checking with the relevant tax authority if you’re relying on a figure for anything formal like accounting, invoicing, or a legal filing. Canada in particular can catch people off guard, since the same purchase might be taxed quite differently depending on which province you’re in, so if you regularly buy or sell across provincial lines, it pays to confirm the rate each time rather than assuming it matches your home province. If you’d like a deeper look at how GST, HST, and PST actually differ and when each one applies, our post on the difference between GST, HST, and PST in Canada walks through it province by province.

This calculator is provided for general reference and estimation purposes only and does not constitute tax or financial advice. Tax rates and rules change and can vary by product type, business circumstance, and jurisdiction, so consult a qualified accountant or your local tax authority for guidance specific to your situation.