Small batches or stocking up big, how to size your inventory

Every reorder presents the same fork. Order a little and keep cash free, or order a lot and hope to save. The right answer depends on three things: your cash, your cost savings and what a stockout would cost you.

The cash flow view

Money spent on stock is money you cannot use for anything else until the units sell. A small batch ties up little and comes back fast, which keeps you flexible. A big batch can leave you short of cash for packaging, ads or the next product, even if every unit eventually sells.

Ask yourself how long it would take to sell the whole lot at your current pace. If a big order would take six months to clear, you are in effect lending that money to your stock for six months.

The supplier-discount trade-off

Larger orders often feel cheaper per piece. Work out whether the saving really beats the costs of waiting. Say you pay Rs 100 per unit in a small batch of 50, or Rs 90 per unit in a batch of 200 (invented numbers). The big batch saves Rs 10 per unit, but you must spend Rs 18,000 instead of Rs 5,000, and 150 of those units sit on your shelf. If they sell slowly, that saving can vanish into storage, damage, fading or changed tastes. Our post on bulk reorder discount versus cash locked works through this more fully.

I am not quoting any supplier terms, since yours will differ. Ask for your own and plug them into the same sum.

The stockout risk

Running out has a cost too. A customer who finds the item sold out may not wait. For a bestseller, empty shelves can hurt more than a slow product ever will. Look at which items you can restock quickly and which take weeks. Quick-to-restock items suit small batches. Slow-to-restock bestsellers justify a deeper buffer.

If you do oversell by accident, read dealing with overselling and out-of-stock orders.

A practical sizing method

Use this approach rather than a gut feel.

• Look at how many units you sold in a recent stretch of weeks.
• Estimate your average weekly sales, and note the weeks that were unusual.
• Multiply by the weeks of cover you want, which is your supplier lead time plus a small buffer.
• Subtract what you already hold.
• Check the total cost against the cash you can spare.

If the number is more than you can afford, order less and accept a higher chance of stockout on that item.

Match batch size to certainty

New products deserve small batches because you do not yet know how they will sell. Proven products can take larger orders. Seasonal items need extra care, so see how to plan festive stock without overbuying.

Keep counts honest

None of this works if you do not know what you hold. A short weekly stock count keeps your numbers true.

Start small, learn the pace, and let proven sales earn the bigger order. You can always reorder; you cannot easily un-buy.