Buying an Austrian apartment building is not fully settled when the price is paid and the keys are handed over. Around the contractual effective date, rent receipts, service charge advances, tenant deposits, arrears and credits must be allocated so that buyer, seller and property manager continue with the same opening figures.
A reliable effective date statement connects the purchase agreement with bank movements and the documents for each tenancy. It separates final amounts from advances and records who receives later payments or bears later refunds. In an occupied building, this structure prevents old balances from disappearing into the buyer's new management accounts.