Does time as a top specialist count toward Estonian permanent residence?

The top specialist permit is a temporary residence permit, and lawful time on it builds toward Estonia's long-term resident (permanent) status, which requires five years of residence immediately before you apply.

To convert to permanent residence you will also need to meet the permanent-residence conditions, including Estonian at B1 level, stable legal income, and health insurance. Keeping your address registered and your permits continuous protects the qualifying five-year clock as you move from top specialist to permanent resident.