Form SSA-521, Request for Withdrawal of Application is a form used to cancel the application for Social Security benefits you submitted.
The document was issued by the Social Security Administration (SSA). The latest version of the form - also known as the SSA Form 521 - was released by the SSA in November 2018 with previous editions obsolete. An SSA-521 fillable form can be downloaded below.
Form SSA-521-SP, Solicitud Para Revocar Una Reclamación - used to submit the SSA request for withdrawal of the application you submitted - is a Spanish version of the original form.
If after applying for Social Security Retirement benefits you have changed your mind about when to start them, you can withdraw your claim by submitting Form SSA-521. The withdrawal can be requested even if you have been receiving your benefits for some time. The information you provide via the form is used by the SSA officials to determine whether you are eligible for a cancellation of benefits. If you provide incomplete information, it may result in rejection of your application.