Accounts and records obligations require registered persons to maintain prescribed books and risk tax determination for unaccounted supplies. Registered persons must maintain true and correct accounts at their principal place of business, recording production, inward and outward supplies, stock, input tax credit, output tax payable and paid, and other prescribed particulars; accounts for multiple places must be kept at respective locations and may be maintained electronically. Owners of storage premises and transporters must keep prescribed consignment records. The Commissioner can require additional documents or permit alternative maintenance methods for classes of taxable persons. Persons above the prescribed turnover must obtain a statutory audit and submit audited accounts and reconciliation statements. Failure to account permits the proper officer to determine tax on unaccounted supplies and invoke tax determination procedures.