NIF Generator
Try our Tax Identification Number (NIF) generator! You can create various valid numbers and customize your experience using the automatic rotation to generate new NIFs based on the selected time. Additionally, you can choose whether or not to include the punctuation between the digits.
Also, be sure to check out our NIF validator which ensures the authenticity of the generated numbers. It’s quick and easy!
Understanding NIF and the Generator Algorithm
What is NIF?
The Número de Identificação Fiscal (NIF) is Portugal's tax identifier, equivalent to Brazil's CPF. It consists of 9 digits and identifies individuals, corporations, and equivalent entities before the Portuguese Tax and Customs Authority (AT). The first digit identifies the category: 1, 2, or 3 for individuals, 5 for corporations, 6 for public entities, 8 for sole traders, and 9 for other entities.
How does the generation algorithm work?
NIF is generated with 8 base digits (the first defining the category) and 1 check digit. The verifier is calculated by multiplying each of the 8 digits by weights 9, 8, 7, 6, 5, 4, 3, and 2 (left to right), summing the products, and calculating the remainder of division by 11. If the remainder is 0 or 1, the verifier is 0; otherwise, it is 11 minus the remainder.
Why use fictional NIFs in development?
E-commerce systems for the Portuguese market, electronic invoicing platforms, ERPs, and fiscal management systems need to validate NIF in registration and invoice forms. Developing and testing these applications requires mathematically valid NIFs without using real tax identifiers of people or companies. NIFs generated by Help4Dev are completely fictitious and safe for testing.