Corporate invoice number
Input
T8700110005901
Output
Corporate-number check digit matches.
Invoice Registration Number & Corporate Number Checker
Check Japanese invoice registration number format and corporate-number check digits before accounting review or spreadsheet entry.
Conversion tools
Loading tool
What it helps with
- Spot possible typos before entering invoice registration numbers
- Check corporate-number check digits during accounting review
- Normalize copied registration numbers before pasting into spreadsheets
How to use
- Paste one or more invoice registration numbers or corporate numbers.
- Choose whether to check invoice format or corporate numbers.
- Review the normalized value, result, and check digit note.
- Copy the TSV summary if you need to paste results into a spreadsheet.
Examples
Typo candidate
Input
T7700110005901
Output
T + 13 digit format is valid, but the corporate-number check digit does not match.
Good to know
- This tool does not confirm official invoice issuer registration status.
- Non-corporate invoice registration numbers can share the same T + 13 digit format without matching the corporate-number check digit.
- Use the National Tax Agency public site for official registration status confirmation.
FAQ
- Does this confirm official invoice issuer registration status?
- No. It checks format and corporate-number check digits only. Use the National Tax Agency public site for official registration status.
- Why can a T + 13 digit number pass format but not the corporate check digit?
- Non-corporate registered businesses also use T + 13 digits, but those digits are not necessarily a corporate number.
- Is the input sent anywhere?
- No. The check runs in your browser and does not call external services.