All QFC Entities within the charge to tax must file a return for each Accounting Period. Appropriate records are to be maintained and preserved and accounts, computations, and other documents, as specified by the Tax Department, are to be submitted with the return. Each return is to contain a self-assessment of tax payable. Returns may be amended within 12 months of the filing date. Financial sanctions may be imposed in respect of late or incorrect returns. Returns may be filed electronically.