How can I keep home-country administration from being overlooked after moving?

Maintain a separate departure register

List the organisations connected to your former home: tax authorities, benefits or pension administrators, banks, insurers, healthcare services, schools, utilities and professional bodies where relevant. For each, record what you have asked, what response you received and what remains outstanding. Do not assume that notifying one public body updates the others.

Ask each organisation how a move affects its records, correspondence and services. Describe the actual arrangement, including any continuing home, work or other connection, rather than choosing a label simply because it sounds convenient.

Assign professional questions correctly

Cross-border tax, social security, insurance and pension matters may require advice from qualified professionals in more than one country. Keep their written guidance and identify any follow-up action; a change of postal address alone does not answer these questions.

Verify Greek immigration requirements separately through official Greek government sources because rules change. Schedule a later review of the departure register once initial notifications have been processed. Check that confirmations have arrived, payments are understood and access to essential accounts still works without relying on a telephone number you have discontinued.