Why stockouts and overstock both kill cash

Most shop owners in Bangladesh treat inventory like a storage problem. It is a cash problem.

When a popular item is missing, you lose the sale today and sometimes the customer tomorrow. When the wrong items sit too long, cash is stuck on shelves while suppliers and rent still need to be paid. Stockouts and overstock look opposite. Both drain the same wallet.

Stockouts feel like “bad luck.” Usually they are not.

A stockout is simple: a customer wants something, you do not have it.

What happens next is expensive:

• They buy from the shop next door.
• They switch brands if you push a substitute they do not trust.
• They stop checking with you for that category.

One missing SKU does not look dramatic in the ledger. Ten missing SKUs across a month do. The loss is not only the margin on those units. It is the habit you break with your regulars.

Common causes in small shops:

• Ordering by memory instead of recent sales
• Reordering late because we still have a few”
• No clear reorder point for fast movers
• Festival / payday demand spikes that nobody tracked from last year

If your best sellers go empty every other week, that is not a supplier issue alone. That is a visibility issue.

Overstock feels safe. It is quiet cash leakage.

Overstock is the opposite mistake: too much of the wrong thing.

You paid for it. It sits. Dust collects. Styles change. Expiry dates approach. You discount later and call it a clearance sale — which is often just recovering part of money that was already trapped.

Overstock kills cash in three ways:

1. Cash stuck — money that could have paid rent, salary, or a better-selling line is frozen in cartons.
2. Space tax — every shelf of dead stock is space you cannot use for movers.
3. Forced discount — you sell at a weaker margin to free the cash you needed months earlier.

Shops often overstock because buying “in bulk feels like a win, a salesman pushes a deal, or last season’s leftover never got reviewed. Without a simple view of what sells and what ages, bulk discounts become expensive mistakes.

The painful middle: both at once

This is the worst pattern — and it is common.

Fast movers are empty. Slow movers are full. The shop looks stocked,” but customers keep asking for what is missing, while cash sits in items nobody is buying.

Owners feel busy. Cash feels tight. The instinct is to blame sales. Often the real issue is mix: too little of what moves, too much of what does not.

A practical way to think about it

You do not need a complex system to start. You need three habits.

1. Know your movers. List the 20–30 items that bring most of your sales. Protect those first. Reorder points belong here, not on everything equally.

2. Age your stock. Once a month, ask: what has barely moved in 60–90 days? That list is where cash is sleeping. Decide — promote, bundle, return if possible, or stop reordering.

3. Separate “cheap to buy” from “smart to hold.” A low unit price does not make a good stock decision. Holding cost is real: capital, space, damage, expiry, and opportunity cost.

If you run multiple outlets or a growing catalog, memory stops working. Then you need numbers you can trust — opening stock, sales, remaining qty, and what is aging — without waiting for a weekend spreadsheet fight.

Cash is the scoreboard

Stockouts steal today’s revenue. Overstock steals tomorrow’s flexibility. Fixing either one helps. Fixing both together is how small shops stop feeling permanently short of cash even when the shelves look full.

Start with your top sellers and your oldest unsold stock this week. That single review usually pays for itself faster than another bulk purchase.

If you want inventory, sales, and aging in one place instead of scattered notebooks, tools like ERP71 are built for that kind of shop-floor clarity — but the discipline comes first: protect movers, clear sleepers, watch cash.