Question 1

How do I calculate sales tax for my state or province?

Accepted Answer

Select your region (US or Canada) at the top, enter the pre-tax amount, and choose your state or province. The calculator shows the tax breakdown and total.

Question 2

What is "Reverse" mode?

Accepted Answer

Reverse mode lets you enter a tax-inclusive total and calculates the original pre-tax amount. Useful when you have a receipt total and need to separate the tax for bookkeeping.

Question 3

What tax rates are included?

Accepted Answer

For US: State sales tax rates for all 50 states plus DC. For Canada: GST, HST, and PST rates for all 13 provinces and territories. All rates are current for 2026.

Question 4

Do I need to register for sales tax collection?

Accepted Answer

In Canada, register for GST/HST if your revenue exceeds $30,000 in four consecutive quarters. In the US, requirements vary by state—most require registration once you exceed economic nexus thresholds (typically $100,000 in sales or 200 transactions).

Question 5

Is this calculator accurate for my business?

Accepted Answer

This tool uses official tax rates and is accurate for standard retail transactions. However, some items may be exempt or taxed at different rates depending on your jurisdiction and business type. Consult a tax professional for specific situations.

Sales Tax Calculator

How do I calculate sales tax for my state or province?

What is "Reverse" mode?

What tax rates are included?

Do I need to register for sales tax collection?

Is this calculator accurate for my business?