What a VAT file that holds actually contains
Mushak discipline is not a software feature. It is a pile of matching documents that a reasonable inspector can follow in an afternoon.
Input tax credit fails in the gap between the supplier’s invoice, the Mushak copy, the goods-received note, and the payment. If any of those four is missing, a credit is a hope, not a right.
Output VAT fails when challans are issued late, numbered creatively, or disconnected from delivery. The return is then a negotiation rather than a summary.
A file that holds has: a return, the working paper that ties it to the ledger, a challan log, a purchase register with BIN checks, and a note of any estimates or timing differences. We would rather a client be one week slower on invoices than three months creative on numbers.
This note is general commentary for Bangladesh accounting and tax practice. It is not advice for a particular entity. Instruct the firm in writing if you need a view on your file.