How to Keep Track of a Store's Inventory

How to Keep Track of a Store's Inventory

For many store owners, the word inventory only comes up in December, when it is time to count everything for the year-end review. That habit is expensive: if nobody watches the stock during the other eleven months, the business can lose money every day without anyone noticing. Products expiring in the back of the storeroom, units lost between the counter and the display shelves, suppliers who overcharge, or sales recorded incorrectly all turn into the same thing: profit that vanished without a trace.

Keeping track of a store's inventory is not a year-end chore; it is everyday work: recording what comes in, what goes out, and what remains at any given moment. It does not matter whether the store sells groceries, clothing, electronics, shoes, or hardware — the logic is the same. This article explains how to organize that control in a small store, which movements must be recorded every day, and how an inventory program makes the task easier.

First: organize the products

Before recording any movement, the store needs an orderly catalog: every product with its name, its unit of measure, and a code that identifies it, which can be the manufacturer's, the supplier's, or a simple internal one. It also helps to assign a fixed place to each item, because what cannot be found quickly does not get sold, and nobody can tell whether it exists. With an organized catalog, every entry and exit is recorded without mistakes or confusion.

Record purchases from suppliers

Everything that comes into the store must be recorded. When a purchase arrives, check the goods against the supplier's invoice or delivery note: count the units, confirm they are in good condition, and write down the cost of each reference. If damaged or missing units arrive, that is noted before paying or accepting the invoice, because it is very hard to claim afterward.

A recorded purchase increases the product's stock and the inventory value as well. If invoices are only paid without entering the goods into the system, the store ends up selling products that do not appear in the kardex, and the physical count never matches what is on record.

Every sale subtracts stock

Selling is not just receiving money: it means taking merchandise out of the store, and that exit must be subtracted from stock at that very moment. In an inventory program such as Kardex Tauro, when you finalize a sales invoice the system automatically subtracts the units sold, generates the kardex movement, and records the amount in cash or as an account receivable when the customer owes the balance. The ticket printer hands the customer a copy and leaves a record of the transaction.

This discipline prevents the most common mismatches in a store: selling without recording, or writing everything down from memory at the end of the day. Every sale should enter the system the moment it happens, with its product, quantity, and payment method, whether cash, card, or store credit. The seller must understand that the invoice is not paperwork: it is how the inventory learns that a unit has left.

Quotations do not subtract stock

A quotation is a promise of sale, not a sale. When a product is quoted, the program shows prices and available stock, but the merchandise is not subtracted until the sale is confirmed and invoiced. This prevents two mistakes: subtracting products that are still in the store, or promising units that no longer exist.

Customer returns restore stock

Returns are the reverse operation of a sale. When a customer brings a product back — because it did not fit, arrived damaged, or the buyer changed their mind — the merchandise returns to the store and the stock is restored: the system puts the units back into inventory, generates the inbound movement, and offsets the exit made on the original invoice.

Before accepting a return, check the product's condition: if it can be sold again, it goes back as available merchandise; if it arrived damaged or expired, it is set aside as shrinkage; and if the customer asks for an exchange, it is handled as one return plus a new sale. Recording returns only verbally is one of the mistakes that most disorganizes a store's kardex.

The display and the storeroom: one inventory in two places

A store has merchandise on the display shelves and merchandise kept in the storeroom. Both are part of the same inventory: what is exhibited is replenished from the storeroom, and what is sold leaves the display. The practical difference is the location, not the ownership of the goods.

That is why transfers between places should also be recorded: moving units from the storeroom to the display, or between branches and cost centers when the business has more than one location. Kardex Tauro handles warehouses and cost centers, so you know not only how many units exist, but where each one is. That detail prevents buying more of what is already stored and speeds up restocking the shelves.

Counts: check what the system says

No matter how organized the store is, the kardex and the physical reality eventually drift apart: a typing error, a stolen unit, or a miscounted delivery is enough to create a difference, and the only way to discover it is to count. For small stores, periodic counting by section works well: one week count the cleaning products, another the beverages, another the stationery, without closing the business. When a count finds a difference, make the adjustment and look for the cause.

Cash and sales must match

Inventory does not end with merchandise: it also includes the money that sales produce. At the end of each day, do the cash count: count the cash left in the register and compare it with the day's sales report. If money is over or short, investigate immediately, while it is still possible to remember what happened. The cash count also helps control store-credit sales, because every receivable recorded incorrectly is money the store may never collect.

An example of a daily routine

The table below summarizes what a retail store should record every day and how each activity affects the inventory:

With this routine, the owner knows every morning how much merchandise there is, how much was sold the day before, and how much money should be in the register. Daily decisions — what to reorder, what to promote, or which product is sitting still — are made on real data instead of impressions.

A routine that fits into everyday life

• Record purchases and sales on the same day they happen, not from memory at the end of the week.
• Assign a single person to be responsible for recording entries and exits, with a clear cash shift.
• Use the printed ticket to review the sale before handing over the merchandise.
• Count by sections all year long, not only in December.
• Investigate every large difference immediately, in merchandise and cash alike.

Keeping track of a store's inventory really means having clarity about three figures every day: what there is, what was sold, and what is still owed. With an organized catalog, movements recorded on time, and periodic counts, any small store keeps a reliable kardex. Programs like Kardex Tauro were designed precisely for that: so recording a sale, a purchase, or a return takes seconds, and the inventory never becomes a year-end mystery again.