Buying guides

Inventory Management for Small Businesses: Reorder Levels, Dead Stock and Stock Counts

Every small business has the same two inventory problems: running out of what sells and sitting on what does not. Both cost money — one in lost sales, the other in cash tied up on shelves. A few simple numbers fix most of it.

TripleBill TeamPublished 18 Oct 2026 2 min read

Key takeaways

  • Reorder level = average daily sales × supplier lead time in days + safety stock.
  • Sort items by sales value: the top 20% usually bring 70–80% of revenue. Watch those most closely.
  • Dead stock is anything that has not sold in 90 days; decide on it every month.
  • Count a few items every week rather than everything once a year.

The reorder level

The reorder level is the stock at which you should place the next order, so the new goods arrive before you run out.

ItemDaily salesLead timeSafety stockReorder level
Atta 10 kg6 bags3 days6 bags6 × 3 + 6 = 24 bags
Cooking oil 1 L152 days1015 × 2 + 10 = 40
Detergent 1 kg45 days64 × 5 + 6 = 26

Safety stock covers surprises — a festival weekend, a late truck. Start with a couple of days of sales and adjust after a month.

ABC: know which items matter most

  • A items: the top fifth by sales value. Check them weekly; never run out.
  • B items: the middle. Check monthly.
  • C items: the long tail of low-value items. Keep them simple; order in bulk, rarely.

Finding and fixing dead stock

  1. 1List items with no sales in the last 90 days.
  2. 2Check expiry dates first — those go before anything else.
  3. 3Bundle slow items with fast ones, or discount them.
  4. 4Return to the supplier where the terms allow.
  5. 5Stop reordering them, and remove them from the catalogue once cleared.

Counting stock without closing the shop

Annual stock-taking closes the shop for a day and is wrong again a week later. Cycle counting is easier: count a few items every week — A items more often — and correct the figures as you go. Every difference should be posted as a stock adjustment with a reason (breakage, expiry, theft, data entry).

Keeping stock right automatically

  • Sales reduce stock when the bill is made, not later.
  • Supplier bills add stock when you record them.
  • Returns and credit notes put stock back.
  • Adjustments carry a reason, so shrinkage is visible in a report.

In TripleBill, stock moves with every invoice, POS bill, supplier bill and credit note; the low-stock list uses your reorder levels, and the dead-stock report shows what has not moved.

Valuing stock

Your closing stock goes on the balance sheet at cost. Most small businesses value it at the latest purchase price or a weighted average; FIFO is more accurate when prices change often. Pick one method and stay with it from year to year.

Frequently asked questions

What is the reorder level formula?

Average daily sales × lead time in days + safety stock.

How often should a small shop count stock?

Count the top items weekly and the rest monthly in rotation, instead of one full count a year.

What counts as dead stock?

Commonly, anything with no sales in 90 days; for seasonal goods, compare with the same season last year.

About the author

Written by the TripleBill team, the people who build the billing and accounting software this site is about. We check competitor prices on their own websites on the date shown above, and we say so when our product is the weaker choice. This article is general information, not tax advice.

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Stock that keeps itself right.

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