Habit one: one document for every entry
Every bill, receipt, invoice and bank movement in the ledger should have its supporting document attached. Article 56 of the Corporate Tax Law requires records to be kept for seven years after the end of the tax period, and Cabinet Decision No. 75 of 2023 sets a AED 10,000 penalty for failing to keep them.
The practical habit is to capture the document when the cost happens: photograph the receipt at the counter, forward the supplier email, save the PDF. Waiting until month end means some documents are already lost.