๐งพ Invoice Generator
Enter your business/client names, invoice number, issue date, and line items with quantities and unit prices to automatically calculate a subtotal, tax amount, and total. Handy for quick, informal invoices for freelance or small business work.
How to use
- Enter the invoice number, issue date, and from/to names.
- Enter each line item's description, quantity, and unit price. Use "+ Add item" for more rows.
- Set a tax rate โ the subtotal, tax, and total are calculated automatically. Use "Copy as text" to copy the result.
How the calculation works
This tool builds the contents of a simple invoice from line items, quantities and unit prices, and calculates the subtotal, consumption tax and total. Line amount = quantity ร unit price Subtotal = sum of line amounts Tax = subtotal ร tax rate (default 10%) Total = subtotal + tax Tax is calculated once on the invoice subtotal rather than line by line, and fractions of a yen are rounded to the nearest yen. Japan's qualified invoice system also requires tax fractions to be handled once per tax rate per invoice. The issue date defaults to today and can be changed. "Copy as text" copies the invoice number, date, parties, items and totals as plain text.
Worked example
Item 1: Design work, 1 ร ยฅ100,000 = ยฅ100,000 Item 2: Revisions, 2 ร ยฅ15,000 = ยฅ30,000 Subtotal: ยฅ130,000 Tax (10%): ยฅ13,000 Total: ยฅ143,000 Sample copied text Invoice number: INV-0001 Issue date: 2026-09-18 โฆ Total: 143,000
Things to be aware of
- A qualified invoice under Japan's invoice system must show the issuer's registration number (T followed by 13 digits), amounts and tax by rate, and the rates applied. This tool has no registration number field, so add the required items yourself.
- Invoices that mix the reduced (8%) and standard (10%) rates must calculate tax separately for each rate.
- Everything you enter stays in your browser and is neither saved nor sent anywhere.
FAQ
Can I export this as a PDF?
This tool doesn't generate a PDF directly. Use "Copy as text" and paste the result into Word, Excel, or your own invoice template.
Is my data saved anywhere?
No, everything you enter stays only in your browser and is never sent to or stored on a server. Closing the page discards it.
Does this support tax-invoice / qualified-invoice fields required in some jurisdictions?
No, fields like registration numbers required for formal tax invoices aren't included. If you need to issue an official invoice, check your local requirements and add any missing fields yourself.