Why dates matter on both sides
A wholesaler may deliver forty units today and offer thirty-day terms. The shop can sell those units now, so the stock should rise. The bank has not paid the full amount, so the supplier account should remain outstanding.
The purchase records items, quantities, cost and location. A payment records money leaving. Keeping them separate prevents a late payment from delaying stock or a delivery from pretending cash has already moved.
Operating expenses should not create goods
Rent, energy, advertising, repairs and many delivery costs support trade but do not add units to a shelf. Recording them as stock purchases distorts quantity. Omitting them altogether gives an incomplete operating picture.
Use a small, consistent set of categories that supports decisions. Formal tax and accounting classification belongs in the appropriate accounting process.
A part-payment example
For a £2,000 delivery with £800 paid:
- purchase adds the received items;
- supplier balance rises by £2,000;
- payment reduces it by £800;
- £1,200 remains outstanding.
The next payment should be a new movement. Editing the original purchase to £1,200 would erase what was delivered and what has already been paid.
Review weekly
Compare received quantities with records, inspect open supplier balances, look for duplicate expenses and review products whose cost changed. Reconcile material amounts with formal bookkeeping and supplier statements.