Sales Tax Calculator

How to Calculate Sales Tax and GST

Calculating sales tax is essential for business owners and savvy shoppers. Whether you are issuing an invoice or checking a store receipt, our tool provides an easy way to move between Net and Gross amounts.

Net vs. Gross Amount

• Net Amount: The base price of the product or service before any tax is applied.
• Gross Amount: The final price paid by the customer, including the tax amount.

Tax Formulas

Adding Tax: Gross = Net × (1 + Tax Rate/100)

Reverse Tax: Net = Gross / (1 + Tax Rate/100)

When to Use This Tool?

• Business Invoicing: Quickly calculate the tax component for your clients.
• International Travel: In many countries (like the USA), sales tax is added at checkout. Estimate your total cost beforehand.
• Expense Tracking: Verify the tax percentages on your receipts for tax return purposes.

Tax Disclaimer: Tax laws are complex and vary by jurisdiction (GST, VAT, Sales Tax). This tool is a basic arithmetic calculator and does not constitute professional tax advice. Always consult with a certified accountant for official filings.

Privacy Focused

Your financial confidentiality matters. Octovelo processes all tax calculations locally. No amounts are transmitted to our servers.