How long is a Bulgarian single permit valid?

The single permit combines work and residence authorisation into one document for third-country nationals hired by a Bulgarian employer. It is typically issued for up to three years.

If your employment contract runs for less than three years, the permit is issued only for the duration of that contract. This ties your right to stay and work directly to your job, so it is important to keep your employment and permit dates aligned and to start any renewal in good time before expiry.