Planning estimate only. Platform fees, taxes, payment costs, and policies can change; verify current terms before pricing.
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Use this result
Share the current inputs or ask ChatGPT to explain the calculation in context.
What does this calculator estimate?
2 consulting hours at $150 each gives a $300 subtotal; with 8 percent tax the total is $324. Line totals = quantity x unit price; total = subtotal + tax.
- Subtotal = sum of (quantity x unit price) across lines (Wikipedia).
- Tax = subtotal x tax rate; total = subtotal + tax.
- A printable invoice usually carries seller, buyer, line items, and payment terms.
What the generator produces
The invoice generator turns your item lines into a professional, printable invoice with subtotal, tax, and total. It's designed for freelancers and small businesses that need a clean invoice without accounting software.
Limitations to watch for
The generated invoice is a working document, not legal or tax advice — check your jurisdiction's invoice requirements (tax IDs, invoice numbers, VAT). It doesn't track payments, send reminders, or sync with accounting.
How to use it in practice
Fill in your business and client details, add line items (one per line: description, qty, price), set the tax rate, and generate. Save as PDF for emailing or printing. Keep a copy for your records.
['Enter your business and client details.', "Add line items as 'description, qty, price'.", 'Set tax and generate the printable invoice.']
How this calculator works
Formula
Line totals = quantity × unit price; subtotal = Σ line totals; tax = subtotal × tax rate; total = subtotal + tax. The tool renders a printable invoice and supports multiple currencies.
Worked example
2 × $150 consulting hours = $300 subtotal; with 8% tax: $324 total.
Assumptions to verify
- The user enters accurate business and client details.
- Line items are entered as description, qty, price.
- The tax rate is a flat percentage of the subtotal.
Frequently asked questions
How do I create an invoice?
Add your business and client details, list line items (description, qty, price), set the tax rate, and generate — the tool computes subtotal, tax, and total.
What information should an invoice include?
Your business name and contact, client details, invoice number and date, itemized lines, subtotal, tax, total, and payment terms.
How are line items calculated?
Each line total = quantity × unit price; the subtotal is the sum; total = subtotal + tax.
Is the invoice legally valid?
It's a working invoice document, but requirements vary by jurisdiction — include the tax IDs and details your tax authority requires.
Can I change the currency?
Yes — the tool supports USD, EUR, GBP, CAD, AUD, and INR.
Does it track payments?
No — this generates the document. Payment tracking and reminders need accounting software.
Can I save it as a PDF?
Generate, then print or save to PDF from your browser.
Cite this tool
BoringToolsKit. “Invoice Generator.” boringtoolskit.com/invoice-gen/ (reviewed 2026-08-25). Free to reference in articles, syllabi, and answer posts with a link.
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