A hardware store carries thousands of small items in many sizes, sold in different units and moved by several people. Some mismatch between the register and the shelf is normal. A large or growing gap means lost sales, dead stock and sometimes theft.

Seven reasons stock never matches

  1. Sales without a bill. "Add two elbows to my account" and no bill is made. For most stores this is the biggest source of mismatch.
  2. One item, three names. "PVC elbow 1 inch", "1 in elbow PVC" and "Elbow 25 mm": stock is added under one name and sold under another.
  3. Buying in one unit, selling in another. Wire arrives as a 90 m coil and sells by the metre; screws by the box, sold by the piece. Every wrong conversion drifts the count.
  4. Purchases entered late. The distributor's bill sits in a drawer while the goods are already being sold.
  5. Short supply and damage. The bill says 50; the box has 46, or two basins arrived cracked.
  6. Returns not entered. A contractor brings back unused fittings; they go on the shelf but not into the records.
  7. Theft. Small, costly items (locks, taps, tools, switches) disappear quietly.

Clean up the item list once

Give every item one name, with size and brand in a fixed order, for example Elbow PVC 1 inch – Brand X. Merge duplicates and set the unit you sell in. It takes a few hours once and saves hours every month.

A routine that keeps stock right

Every day

  • Bill every sale, including credit sales to regulars.
  • Enter purchases the day they arrive, after counting what actually came.
  • Enter returns the moment material comes back.

Every week

  • Count a few fast-moving items and compare with records. Rotate through your top 50–100 items over the month.
  • Count high-value, easy-to-pocket items more often; that is where theft shows first.
  • Check low stock on best sellers and reorder before you run out.

Every quarter

  • Full physical count; correct the records.
  • List items that have not sold in six months and plan to clear them. See how to reduce dead stock.

When to reorder

Reorder point = average daily sales × (supplier lead time in days + safety days)

EXAMPLE

A tap sells 60 a month (2 a day). The distributor takes 5 days, and you keep 3 days of safety stock.
Reorder when stock falls to 2 × (5 + 3) = 16.

Use the reorder level calculator for any item.

Where software helps

Good store software removes most of these errors by design: every bill reduces stock, purchases can be entered from the supplier's invoice, and low stock shows without counting. That is the problem NANDIX OS is built to solve for hardware and building-material stores.