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🧾 Invoice Tax & Total Calculator

Quickly add tax to a net amount or extract tax from a total price.

Net Amount: $1,000.00
Tax Amount: $100.00
Total Invoice Amount: $1,100.00

Understanding Invoice Tax Calculations

Whether you are issuing invoices for clients or auditing business expenses, accurate tax calculation prevents billing errors and compliance issues.

Add Tax vs. Extract Tax

Add Tax: Use this when you have a base subtotal and need to add sales tax or VAT on top of it.

Extract Tax: Use this when you have the final paid amount and need to find out how much of that total was tax.