https://github.com/wojtekmaj/is-valid-nip

Check if a number is a valid Numer Identyfikacji Podatkowej (NIP).
https://github.com/wojtekmaj/is-valid-nip

nip validation

Last synced: 15 days ago
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Check if a number is a valid Numer Identyfikacji Podatkowej (NIP).

• Host: GitHub
• URL: https://github.com/wojtekmaj/is-valid-nip
• Owner: wojtekmaj
• License: mit
• Created: 2021-03-19T12:30:43.000Z (over 4 years ago)
• Default Branch: main
• Last Pushed: 2025-03-31T21:02:57.000Z (3 months ago)
• Last Synced: 2025-03-31T21:33:19.775Z (3 months ago)
• Topics: nip, validation
• Language: TypeScript
• Homepage:
• Size: 2.8 MB
• Stars: 3
• Watchers: 2
• Forks: 1
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • Funding: .github/FUNDING.yml
  • License: LICENSE

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# Is-Valid-NIP

Check if a number is a valid Numer Identyfikacji Podatkowej (NIP).

## tl;dr

- Install by executing `npm install is-valid-nip` or `yarn add is-valid-nip`.

- Import by adding `import isValidNIP from 'is-valid-nip'`.

- Use it by writing `const valid = isValidNIP('5252611332')`

## See also

- [is-valid-pesel](https://github.com/wojtekmaj/is-valid-pesel): Check if a number is a valid PESEL.

- [is-valid-regon](https://github.com/wojtekmaj/is-valid-regon): Check if a number is a valid REGON.

## Examples

```ts

isValidNIP('5252611332'); // true

isValidNIP('525-261-13-32'); // true

isValidNIP('525-26-11-332'); // true

```

## License

The MIT License.

## Author

  

    

      

    

    

      Wojciech Maj