Cost-Effective Ways to Track Inventory at Your Gas Station or Convenience Store

Estimated reading time: 7 minutes

For gas station and convenience store owners, inventory is cash sitting on a shelf. 

Every case of beverages in the cooler, pack of cigarettes behind the counter, candy bar on the shelf and foodservice item in the kitchen represents money that has already been invested. When inventory isn’t accurately tracked, operators can lose money through theft, receiving errors, spoilage, over-ordering, under-ordering and simple mistakes. 

And those losses can add up quickly. 

According to preliminary NACS State of the Industry data, merchandise shrink averaged $1,703 per store per month in 2025 – more than $20,000 per store annually if that monthly rate persisted for a full year. NACS also reported that merchandise shrink remained roughly twice as high as it was in 2021.  

The good news is that improving inventory control doesn’t necessarily require expensive equipment or a complicated enterprise system. 

Here are practical, cost-effective ways gas station and convenience store owners can gain better control of inventory. 

Start With the Data You Already Have 

Before investing in new hardware, look at your point-of-sale system. 

Your POS already records what is being sold. Connecting sales information with your back-office inventory records can give you a much clearer picture of what should still be on the shelf. 

The basic equation is simple:

Compare expected inventory against what you actually count. 

The difference can point to shrink, receiving mistakes, incorrect item setup, waste or other operational problems. 

This approach also turns inventory management from a periodic accounting exercise into something operators can monitor throughout the month. 

That matters because shrink is a trailing indicator. NRF notes that many retailers use cycle counts or off-cycle inventories to identify inventory losses between full physical inventories.  

Cycle Count High-Risk Products Instead of Counting Everything 

A full-store inventory can take hours and may require additional employees or an outside inventory company. 

You don’t necessarily need to count every SKU every week. 

Instead, identify your highest-risk and highest-value categories and count those products more frequently. 

For many convenience stores, that might include: 

• Cigarettes and other tobacco products 
• Beer and packaged beverages 
• Candy 
• Energy drinks
• High-value general merchandise 
• Foodservice ingredients 
• Lottery-related inventory, where applicable 

High-volume products deserve attention too. 

For example, NACS reported that candy generated an average of $8,816 in sales per store per month in 2024, with margins of 50.58%.  

Small inventory discrepancies across high-volume or high-margin categories can therefore become meaningful losses over time. 

A simple ABC counting strategy can help: 

A items: High-value/high-risk products – count weekly. 

B items: Medium-value products – count monthly. 

C items: Lower-risk products – count quarterly or during full inventories. 

This concentrates employee time where inventory accuracy matters most. 

Use Barcode Scanning Instead of Paper Counts 

Clipboards and spreadsheets may appear inexpensive, but manual inventory has a hidden cost: employee time and errors. 

Employees can misread UPCs, transpose numbers or enter counts incorrectly. 

A barcode-based mobile inventory process can reduce much of that manual entry. 

Employees can scan an item, enter the quantity and move to the next product. 

For independent operators, the goal doesn’t need to be sophisticated warehouse automation. Even a smartphone or inexpensive handheld scanner connected to a back-office system can make cycle counting considerably easier. 

The more frequently inventory can be counted without disrupting store operations, the faster operators can identify discrepancies. 

Match Deliveries Against What You Ordered 

Inventory control shouldn’t start when merchandise reaches the shelf. 

It should start at the back door. 

When a vendor delivers 10 cases but invoices you for 12 – or an employee accidentally receives 12 into the system – you have an inventory problem before the merchandise is ever sold. 

Create a simple receiving process: 

Purchase Order → Delivery → Invoice → Inventory 

Employees should verify quantities when merchandise arrives and document shortages, damaged products and substitutions. 

Electronic invoices can make this even more efficient by reducing manual data entry. 

The objective is simple: know exactly what entered the store before trying to determine what left it. 

Track Inventory Variances in Dollars 

An inventory report showing that you’re missing “17 units” doesn’t tell you much by itself. 

Convert the variance into dollars. 

For example: 

Expected: 100 units 
Actual: 92 units 
Variance: -8 units 
Cost: $7 per unit 
Potential inventory loss: $56 

Now multiply that across hundreds or thousands of SKUs. 

This is why seemingly small inventory discrepancies deserve attention. 

NRF’s 2023 National Retail Security Survey found that retail shrink represented $112.1 billion in losses in 2022, with an average shrink rate of 1.6%, compared with 1.4% the previous year.  

Importantly, shrink doesn’t automatically mean theft. NRF explains that shrink can include external theft, employee theft and vendor fraud, but also administrative errors, damaged merchandise, expired products and spoilage.  

That distinction is important for convenience retailers. 

Better inventory tracking isn’t simply a loss-prevention tool. It’s an operational tool. 

Compare Inventory Data With POS Transactions 

If inventory says products are disappearing but sales aren’t being recorded, that’s something worth investigating. 

Modern inventory management becomes much more valuable when operators can compare: 

Instead of simply discovering that 20 units are missing, operators can begin asking better questions. 

When did the variance occur? 

Which shift was working? 

Were there voids or refunds? 

Were unusual discounts applied? 

Was merchandise received correctly? 

Was product damaged or discarded? 

The goal isn’t to automatically assume employee theft. It’s to give managers enough information to investigate exceptions instead of manually reviewing hundreds of transactions. 

Pay Special Attention to Foodservice Inventory 

Foodservice has become increasingly important to convenience store profitability. 

According to NACS, foodservice generated 38.59% of in-store gross margin dollars in 2024.  

But foodservice inventory also creates different challenges. 

Operators need to account for ingredients, portions, spoilage, waste and prepared products that may never appear as individual retail SKUs. 

If you’re selling pizza, for example, inventory isn’t simply “one pizza.” 

You’re managing dough, cheese, sauce, toppings, boxes and other ingredients. 

Tracking recipes or theoretical food costs against actual ingredient usage can reveal over-portioning, waste and unexplained losses. 

For stores expanding their foodservice operations, this can become just as important as counting merchandise on the shelves. 

Don’t Try to Solve Every Inventory Problem With Cameras 

Video surveillance is important, but cameras alone don’t tell an operator what to look for. 

Imagine reviewing eight hours of video because inventory is missing. 

Now imagine your inventory and transaction data identifying a specific item, register, employee and 20-minute time period that deserves attention. 

That’s a very different loss-prevention process. 

NRF reported that retailers surveyed experienced a 93% increase in average annual shoplifting incidents in 2023 compared with 2019, while dollar losses from shoplifting increased 90% over that period. (National Retail Federation) 

Technology should help operators narrow their focus so managers spend less time searching for problems and more time resolving them. 

Measure the Cost of Doing Nothing 

Small operators sometimes look at inventory management software as another monthly expense. 

A better question is: 

How much inventory would I need to recover for the system to pay for itself? 

Using NACS’ preliminary 2025 merchandise shrink figure of $1,703 per store per month, even a 10% reduction would represent approximately: 

$170 per month 

or 

$2,044 per year per store. 

For a five-store operator, that’s potentially more than $10,000 annually in avoided merchandise shrink, assuming each store experienced the NACS average and achieved the same 10% improvement.  

And that’s before considering potential savings from reduced labor, better ordering, fewer stockouts and improved receiving accuracy. 

The Most Cost-Effective Inventory System Is the One Your Team Will Actually Use 

Inventory management doesn’t have to start with expensive technology. 

Start with the fundamentals: 

1. Connect sales and inventory data. 
2. Cycle count high-risk products. 
3. Scan products instead of manually entering UPCs. 
4. Verify vendor deliveries. 
5. Track inventory variance in dollars. 
6. Investigate exceptions rather than every transaction. 
7. Pay special attention to foodservice and other high-margin categories. 

Then automate as much of that process as your operation can reasonably support. 

At Petrosoft, we believe technology should help convenience retailers turn the information they’re already generating into actionable insights. Connecting POS, back-office, inventory and loss-prevention processes can give operators a clearer view of what is happening inside their stores – without adding unnecessary work for managers and employees. 

For independent gas station and convenience store owners, better inventory management isn’t about counting more. 

It’s about knowing what to count, identifying where money is being lost and giving managers the information they need to act before a small inventory problem becomes an expensive one. 

Sources: NACS State of the Industry data and reporting; National Retail Federation National Retail Security Survey and The Impact of Retail Theft & Violence.