# Manner of Maintaining Accounts and Records
GST allows flexibility in how records are kept, but builds in integrity safeguards so that data cannot be tampered with.
## The Rules
1. Manual or Electronic — Records may be kept in either form. Electronic records must be authenticated by a digital signature.
2. Back-up — Proper back-up must be maintained so that data can be restored in case of destruction.
3. No Erasing or Overwriting — Entries cannot be erased, effaced, or overwritten. Incorrect entries must be scored out under attestation and the correct entry recorded.
4. Audit Trail — For electronic records, any change or edit must leave an audit trail showing original value, modified value, user, and timestamp.
5. On-Demand Access — Records (together with passwords, encryption keys and codes) must be furnished to the proper officer when demanded.
## Why These Rules Matter
Without the no-overwriting rule and audit trail, taxpayers could 'edit history' after the fact and defeat verification. The on-demand password rule ensures that encryption cannot be used as a shield against assessment.