Transaction sets: give every entry a complete evidence pack

Hook

The most common sentence in bookkeeping is "send me the documents". But one piece of business is rarely one document: a quotation, a contract, a delivery order, an invoice, a payment slip. Today we cover a concept that lifts the quality of a set of books by three levels — the transaction set: giving every entry a complete evidence pack.

Where the evidence comes from

The story of one transaction is scattered across three places. Digital — the PDF invoice in your email, the e-wallet receipt, the platform statement you download (the twentieth lesson). Paper — the formal A4 invoice, and the thermal-paper slips from the supermarket that fade the moment you touch them (the fifteenth lesson: photograph it on the spot). And process and contract documents — the delivery order, the goods received note or GRN, and the contract itself, because a lot of financial terms hide in the contract clauses. The first step is to be a diligent collector: every sheet of paper and every file is potential evidence.

The assembly rule: one entry, one set of evidence

The golden rule: one accounting entry, one transaction set. The most common mistake is bundling documents from several steps into one entry. Take the classic B2B credit purchase from the eighth lesson. Evidence pack one, the purchase on credit — the core document is the supplier's purchase invoice, paired with the DO or GRN proving the goods actually arrived. The story: the goods arrived and the debt was created. The entry: Dr expense or asset, Cr payables. Evidence pack two, the payment — the core document is the payment evidence, the slip or voucher, paired with the supplier's receipt (the nineteenth lesson: the bill proves you owed, the receipt proves you paid). The story: the debt was settled. The entry: Dr payables, Cr bank. Two stories, two sets of evidence, two entries. Bundle them together and the books turn to mush.

Once assembled: into the system

With the evidence pack assembled, getting it into a system like Bukku (the twenty-second lesson) follows naturally: the credit purchase pack becomes a bill; the payment pack is recorded as a payment matched back to that bill; and the attachments go straight onto the transaction (as the twentieth lesson covered). From then on you can drill down from the report to the entry and the evidence pack is right there. Audit arrives? The story is complete and the evidence is in order. "Documents first" from the twenty-first lesson is the principle; the transaction set is its construction drawing.

The boss's simplified version

You do not need an accounting background to get eighty percent of the way. For every piece of business, ask yourself three questions. What happened (the invoice or contract)? Did the goods arrive (the DO or GRN)? Did the money move (the slip or receipt)? Staple the answers to those three questions together and an evidence pack has formed. Hand it to your accountant by the pack rather than by the pile, and the detective fee from the last lesson halves immediately.

To close

The credibility of a set of books lies not in pretty numbers but in every number having a coherent set of evidence behind it. Want your books at that level? Grab a coffee first and talk about your business. For the accounting, come to LTT. I am LTT, helping SME bosses get their accounts straight. Follow us, and see you next time.