Let us look at chapter 7 of CGST rules - Accounts and Records. This text is taken from http://www.cbec.gov.in/resources//htdocs-cbec/gst/cgst-rules-01july2017%20.pdf
Maintenance of Accounts by Registered Persons
supplies attracting payment of tax on reverse charge along with the relevant documents, including invoices, bills of supply, delivery challans, credit notes, debit notes, receipt vouchers, payment vouchers and
refund vouchers.
10, shall maintain the accounts of stock in respect of goods received and supplied by him, and such accounts shall contain particulars of the opening balance, receipt, supply, goods lost, stolen, destroyed,
stock including raw materials, finished goods, scrap and wastage thereof.
advances received, paid and adjustments made thereto.
10, shall keep and maintain an account, containing the details of tax payable (including tax payable in accordance with the provisions of sub-section (3) and sub-section (4) of section 9), tax collected and paid,
invoice, credit notes, debit notes, delivery challan issued or received during any tax period.
(5) Every registered person shall keep the particulars of -
(a) names and complete addresses of suppliers from whom he has received the goods or services chargeable to tax under the Act;
goods or services, where required under the provisions of this Chapter;
including goods stored during transit along with the particulars of the stock stored therein.
those declared under sub-rule (5) without the cover of any valid documents, the proper officer shall determine the amount of tax payable on such goods as if such goods have been supplied by the registered
person.
principal place of business and books of account relating to additional place of business mentioned in his certificate of registration and such books of account shall include any electronic form of data stored on any
electronic device.
effaced or overwritten, and all incorrect entries, otherwise than those of clerical nature, shall be scored out under attestation and thereafter, the correct entry shall be recorded and where the registers and other
deleted shall be maintained.
(9) Each volume of books of account maintained manually by the registered person shall be serially numbered.
account belonging to a registered person are found at any premises other than those mentioned in the certificate of registration, they shall be presumed to be maintained by the said registered person.
accounts depicting the,-
receive or supply goods or services on behalf of such principal separately;
applicable) of goods or services received on behalf of every principal;
applicable) of goods or services supplied on behalf of every principal;
(d) details of accounts furnished to every principal; and
behalf of every principal.
production accounts showing quantitative details of raw materials or services used in the manufacture and quantitative details of the goods so manufactured including the waste and by products thereof.
(13) Every registered person supplying services shall maintain the accounts showing quantitative details of goods used in the provision of services, details of input services utilised and the services supplied.
accounts for works contract showing -
contract is executed;
services received for the execution of works contract;
services utilized in the execution of works contract;
services.
(15) The records under the provisions of this Chapter may be maintained in electronic form and the record so maintained shall be authenticated by means of a digital signature.
invoices, bills of supply, credit and debit notes, and delivery challans relating to stocks, deliveries, inward supply and outward supply shall be preserved for the period as provided in section 36 and shall, where such accounts and documents are maintained manually, be kept at every related place of business mentioned in the certificate of registration and shall be accessible at every related place of business where such accounts and documents are maintained digitally.
or a clearing and forwarding agent for delivery or dispatch thereof to a recipient on behalf of any registered person shall maintain true and correct records in respect of such goods handled by him on behalf of such registered person and shall produce the details thereof as and when required by the proper officer.
accounts which he is required to maintain under any law for the time being in force.
Generation and Maintenance of Electronic Records
reasonable period of time.
demand, the relevant records or documents, duly authenticated by him, in hard copy or in any electronically readable format.
registered person, he shall, on demand, provide the details of such files, passwords of such files and explanation for codes used, where necessary, for access and any other information which is required for such access
files.
Records to be Maintained by Owner or Operator of Godown or Warehouse
and Transporters
in accordance with the provisions of sub-section (2) of section 35, if not already registered under the Act, shall submit the details regarding his business electronically on the common portal in FORM GST
Commissioner and, upon validation of the details furnished, a unique enrolment number shall be generated and communicated to the said person.
or Union territory shall be deemed to be enrolled in the State or Union territory.
amend the details furnished in FORM GST ENR-01 electronically on the common portal either directly or through a Facilitation Centre notified by the Commissioner.
manner that they can be identified item-wise and owner-wise and shall facilitate any physical verification or inspection by the proper officer on demand.