Is it possible to terminate internet or phone contracts early when leaving Germany?

Yes, you can terminate your contracts early if you are permanently leaving Germany under the 'Sonderkündigungsrecht' (special right of termination). To use this right, you usually need to provide documents proving your departure from Germany (e.g., your Abmeldung certificate, which confirms you've deregistered your address). Always contact your provider before terminating your contract to get the specific details.