When closing a company, it is necessary to perform a clearing process. Generally, you will entrust the procedure to a liquidator (€ 400-1000), one of which must be based in Estonia. Since it is necessary to submit various application documents to the Estonian government, the process takes about 8-10 months. Although it takes a long time, the process itself is simple, so it will not be a big burden.
If you have debts, you cannot proceed with the liquidation process.