Inventory report: how to make one

If someone asked you right now for the exact number of units you have of each product and the total value of your inventory, could you answer without running to the warehouse to count? In many businesses the honest answer is no, and not because of a lack of organization: the information is scattered across invoices, delivery notes and spreadsheets that nobody has consolidated. An inventory report exists to solve exactly that. It brings the state of your stock and its value together in a single document, with clear figures you can review and use to make decisions. In this article you will learn what an inventory report is, what it is for, which types are worth generating, how to make one step by step and how often you should update it.

What is an inventory report

An inventory report is a document that shows, as of a specific cutoff date, how many units of each product your business has in stock and how much those units are worth. It is not the same as the physical count: the physical count is the act of going to the storeroom and counting the merchandise, while the report is the organized information built from your movement records: purchases, sales, returns, shrinkage, transfers and adjustments. If those records are up to date, the report tells you precisely what you have, where it is and what it represents in money. If they are late or incomplete, the report will show wrong figures and lose its value entirely. That is why it is not something you improvise on the day you need it: it is the natural result of keeping permanent control of every inbound and outbound movement of merchandise.

What is an inventory report for

A good inventory report answers in seconds questions that used to require walking the warehouse or going through dozens of documents:

Know your real stock: exactly how many units you have of each item, without relying on memory or counting them one by one.
Know the value of your inventory: how much money is tied up in merchandise, which reveals overstock, idle capital or products that are not performing.
Detect shortages and surpluses: comparing the report against a physical count brings out differences that may be recording errors, shrinkage or losses.
Make purchasing decisions with data: the report shows what is about to run out and how much you should order, so you neither run out of stock nor overbuy.
Spot slow-moving products: identifying merchandise that does not rotate lets you plan promotions, discounts or returns to suppliers.
Back up decisions with reliable figures: partners, your accountant or institutions receive organized, verifiable numbers instead of estimates.

Most useful types of inventory reports

There is no single report that works for everything: depending on the decision you need to make, one type or another is more useful. For a small or medium business, these are the most practical ones:

Current stock: lists every product with its available balance at the cutoff date. It answers the basic warehouse question: what do I have and how much.
Valued inventory: adds the unit cost and works out the total value of each item and of the whole stock. It is the basis for the accounting close and for knowing how much capital is sitting in merchandise.
Slow-moving products: ranks items by their outbound movements over the period to reveal slow or obsolete merchandise that takes up space and money.
Products about to run out: flags items whose balance is at or below their reorder point, the signal to restock before you run out of units.
Shortages versus the system: compares the result of the physical count with the recorded balance and computes the differences. It is essential after every count.
Period movements: summarizes inbound and outbound movements, returns and adjustments between two dates, ideal for auditing what happened to the merchandise and why the stock changed.

How to make an inventory report step by step

You can build it in a spreadsheet or with an inventory program: the process is the same, and it is worth repeating it in the same order every time so you never skip a step.

Define the cutoff date and the scope. Decide which day the report refers to and whether it covers the whole warehouse or only one category, one storeroom or one set of products.
Bring your movements up to date. Up to the cutoff date, every inbound and outbound movement must be recorded in each product kardex.
Calculate the balance per product. Apply the basic formula: opening stock plus inbound movements minus outbound movements, adding or subtracting returns, shrinkage and adjustments.
Sort the list. Group items by code, name or category so the report is easy to read and easy to compare against the physical warehouse.
Value the inventory. Multiply the stock of each item by its unit cost and add up the total to know the value of your inventory.
Review before closing. Look for negative balances, duplicated items or figures that do not match what you see in the storeroom.
Save every version with its date. Keeping the report of each cutoff lets you compare periods and spot trends over time.

Which columns to include in an inventory report

A stock report needs at least the product code, the product name, the unit of measure, the stock at the cutoff date and the unit cost. If the report is valued, add the total value of each line. And when you want to explain why the stock changed, also add the opening stock and the inbound and outbound movements for the period. With those columns you have everything you need to read the state of your warehouse at a glance, without noise. That does not mean more columns are always better: every column you never use only adds confusion. Define the layout according to the purpose. The current stock and valued inventory reports do not need the full movement history, and the movement report does not need to repeat the cost of each unit. Keeping the layout simple also makes it easier to compare one cutoff with the next one.

Example of an inventory report

This is what a simple valued stock report looks like, cut off at the end of the month and built with the essential columns:

Code	Product	Stock	Unit cost	Total value
TOR-001	Self-drilling screws, box of 500	48	$12,500	$600,000
ACE-014	Multi-purpose oil, gallon	23	$18,000	$414,000
GUA-007	Nitrile gloves, box of 100	15	$21,500	$322,500
ETI-003	Adhesive labels, pack	60	$4,800	$288,000
CIN-021	Packing tape, roll	32	$3,200	$102,400

The last column comes from multiplying the stock by the unit cost, and adding up the total value column gives the value of the inventory at the cutoff. In this sample the whole stock is worth $1,726,900, a figure that works both for the accounting close and for deciding how much to order next month.

How often to generate an inventory report

The ideal frequency depends on the type of business and on how fast your merchandise rotates. The general rule is simple: the faster the inventory rotates, the more often you need to see it.

Daily: it makes sense in businesses with high turnover or perishable products, where stock changes so much in a single day that a weekly report is no longer useful for decisions.
Weekly: a good frequency for most retailers: review out-of-stock items, slow products and replenishment needs every Monday or Friday.
Monthly: the valued inventory report and the movement report are generated with the month-end cutoff, for the accountant and for comparing one period with another.

In addition, after every physical count you should generate the shortages versus the system report, regardless of the date, because it is the only way to close the gap between what the record says and what is actually in the warehouse. If you currently build these reports by copying, pasting and adding up rows in a spreadsheet, you already know what they cost: hours of work and errors that show up exactly when you need the right number. When every product kardex is up to date in a system, the report stops being a chore and becomes a result: Kardex Tauro automatically generates stock, valued, low-stock and movement reports from the information you already record every day. Your job should not be building the report; it should be reading it and making decisions with it.

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