How to Understand Information
The CNIS contains several sections and data that may seem confusing at first glance. Here are the main elements you should analyze:
- Affiliate Identification – full name, NIT and CPF number, date of birth and mother’s name.
- Social Security Relations – separated into several blocks.
- Origin of the link – name of the company or employer.
- Link type – which taxpayer category you fall into (employee, public agent, voluntary).
- Start and end date – the optional contribution (through employment or optional).
- Base payment remuneration - gross salary.
- Collection competence – month in which the payment is due (always paid in the month following the month in which the payment is due).
- Collection date – when the contribution was paid.
- Contribution amount.
Here's an example:

Correcting Errors in CNIS
If you find errors or incorrect information in your CNIS, follow these steps to correct them:
- Check the Data: Confirm incorrect information by comparing it with your personal documents and pay stubs.
- Request Correction: Contact the INSS via My INSS Portal or schedule an in-person appointment (find out how to schedule by following our step-by-step guide Learn how to make an appointment with the INSS).
- Follow the Process: Regularly check the status of the request until corrections are made.
The Importance of CNIS in Retirement
Keeping an updated and correct CNIS is essential for planning your retirement. Accurate information ensures that benefit calculation is fair and that all contribution periods are considered. Check your CNIS frequently to avoid surprises when applying for your retirement.
Tips and Recommendations
Here are some tips to ensure your CNIS is always up to date:
- Review Regularly: Periodically monitor the statement to ensure that all information is correct.
- Store Documents: Keep all proof of contributions and employment contracts to facilitate any corrections.
- Report Changes: Notify the INSS of any changes to personal or professional data.
Conclusion
The CNIS is a powerful tool for managing your pension trajectory. By understanding and monitoring your information, you ensure that your rights are respected and that your retirement is calculated correctly. Follow this manual to keep your CNIS up to date and enjoy the benefits of the Brazilian social security system.