Free Tax and VAT Invoice Calculator
Use this tax and VAT calculator to quickly work out invoice tax amounts and the final total your client should see.
What you can do here
Calculate subtotal, tax amount, and invoice total using a custom VAT or tax rate.
Built for real invoice workflows
Once your totals look right, InvoiceAgent can turn them into a scheduled PDF invoice.
Preparing your calculator with today’s date…
How to use it
Enter your invoice subtotal before tax.
Add the tax or VAT percentage that applies to the invoice.
Review the tax amount and the final invoice total.
Why it helps
Check your numbers before creating the invoice.
Useful for freelancers, consultants, and agencies handling mixed tax rates.
Makes it easier to price retainers and project invoices confidently.
From free tool to live invoice workflow.
Use the result when creating your invoice in InvoiceAgent. Planner setup links carry the settings they describe into a draft. Review your dates, amounts, PDF, and reminder settings before scheduling.
Move from the quick answer into the rest of the invoice system.
VAT calculator guide
VAT calculator guide
Get the editorial VAT calculator page with formula explanations, FAQ content, and related billing links.
International invoicing
International invoicing
Apply tax and currency logic inside global invoice workflows with clearer client-facing totals.
Invoice templates
Invoice templates
Use the result inside invoice formats that are ready for clients and easier to automate.
Knowledge base
Knowledge base
Review the billing concepts behind the numbers before they go onto a live invoice.
Profession pages
Profession pages
See how freelancers, consultants, and agencies apply the same calculator output in different workflows.