Why is my entire BSN not visible in MBS?

Due to privacy laws your BSN is protected. For identification purposes only the first 3 digits and the last digit are visible. Is the number not correct or has your tax liability changed? You can change this in your MijnBumaStemra account. Click on the icon at the top right of your screen and choose ‘My profile’. Then click on the change button where you previously entered your BSN. Please do not include your BSN in your e-mail.