Usually, no release is needed just for taking self-portraits yourself. A model release matters when an image is being published or licensed for uses that require the subject’s permission.

Because you are also the model, you generally aren’t violating your own rights by creating or using the image yourself. The issue comes later if a publisher, stock agency, or other end user wants proof they have permission to use your likeness. In that case, they may require a model release, even for a self-portrait.

In practice, if you plan to license the image commercially, having a signed self-release can make things easier because some publishers or agencies routinely ask for one. But the need is typically driven by the publisher or end user, not by the act of taking the photo itself.

This is a general photography-use answer, not legal advice; exact requirements can depend on jurisdiction and the intended use.