Secure statements, savings records, account-opening documents, bank notices and correspondence with the guarantee scheme. For companies, accounting records and the internal allocation of the balance should also be retained. The key evidence connects the depositor, institution, balance and reimbursement.
A temporary high balance requires additional proof of its origin and of the relevant life event or property transaction. A high account balance alone does not establish the exception.
After payment, prepare a reconciliation showing the opening balance, protected amount, any special amount, payment and remaining claim. Record inconsistencies between statements, the bank notice and the payment and resolve them against the underlying documents.