Art museum gift shops, campus bookstores, and animal shelter merch stores all have one thing in common: every sale supports a mission. For many nonprofits, a store is a steady source of funding that doesn’t depend on the next appeal, grant cycle, or corporate sponsorship.

Running one also means taking on a job most nonprofit teams haven’t done before: inventory management. A product fundraiser has a clear start and end, but a store has to keep the right items on its shelves week after week. Stock too little and you miss sales when demand peaks. Stock too much and your budget sits in a storage room instead of funding your programs.

This guide covers five ways to manage your store’s inventory so that more of what you sell supports your mission.

1. Set up an inventory organization system.

When you’re first starting your store, most or all of your inventory may be on the floor. In that case, it’s less about storage and more about creating visually appealing displays that draw customers in and entice them to make a purchase. But once your store grows and begins to store more inventory, management becomes more complex.

Once your stockroom fills up, finding items shouldn’t take 10 minutes. Start by purchasing physical storage solutions for your backrooms, including:

• Shelving units
• Storage cabinets
• Storage bins
• Wire shelving

Label every shelf and bin, too. When a volunteer covering the register needs to restock postcards mid-shift, clear labels save them from having to open every box in the room. And because new stock keeps arriving, plan to revisit your setup as your product mix changes. Organized storage matters even more for nonprofits that accept in-kind donations, such as food pantries or thrift stores, since large amounts of stock can arrive at unpredictable times. 

As you continue running your nonprofit’s store, feel free to rearrange your storage until it makes the most sense for your unique needs. For example, if you have any particularly popular items, it might make sense to move them into a storage compartment closer to the front of your back room. This way, you’ll make it easier for you and other employees to restock this particular item.

2. Monitor inventory regularly.

To ensure your store is never significantly under- or over-stocked, stay apprised of your needs by regularly monitoring your business’ inventory. We recommend implementing a dedicated inventory management method to help you stay on top of your stock levels, such as one of the following:

• First-in first-out (FIFO). Sell items in the order you received them. FIFO matters most for perishable goods, like packaged snacks in a zoo gift shop, but it’s also useful for anything that dates itself, such as calendars, event T-shirts, or exhibition catalogs.
• Just-in-time (JIT). Order only enough stock to meet current demand. JIT suits stores with tight storage, like a small campus bookstore that reorders mugs in small batches instead of filling its back room. It works best when you have a clear read on what customers want, since an unexpected rush can leave shelves empty.
• Economic order quantity (EOQ). Use this formula to calculate how much to order at once so you meet demand while keeping inventory costs low. Because EOQ assumes demand and storage costs stay steady, it fits year-round staples better than seasonal merchandise. A museum shop might use it for standard postcards but not for items tied to a temporary exhibit.
• ABC analysis. Rank your inventory by demand, cost, and risk. “A” items are high-value, high-demand, and high-cost, “C” items are low on all three, and “B” items fall in between. An aquarium gift store might find that its plush animals and framed art prints are A items worth watching closely, while keychains and magnets are C items it can reorder in bulk.

Ideally, your store will implement perpetual inventory tracking in addition to the aforementioned methods. This requires inventory management software (more on this later) that provides real-time information on your inventory levels, so you always have accurate data to back up your decision to order new products.

3. Analyze inventory trends.

Monitoring tells you what you have, and analysis tells you what to do next. Track metrics like days sales in inventory (DSI), gross margin, and inventory turnover to see how quickly each product sells and how much it earns for your mission. 

In particular, you want to determine your:

• Most popular items. Keep track of your popular items to ensure your store always stays stocked to meet demand. You may also conduct surveys and research to understand why these items are so attractive, helping you offer similar items that will also sell well.
• Least popular items. Similarly, knowing which items don’t sell well will help you keep your inventory moving. You can stock fewer of these items, or even discontinue them, if your audience shows particularly low interest.
• High sales periods. Find the times of day, days of the week, or seasons when sales peak. A campus bookstore that sees rushes during move-in week and graduation can stock up beforehand and time its marketing and promotions around those dates.

Once your team is comfortable with these basics, add a few more metrics: your inventory turnover ratio, how often you end up overstocked, how reliably your suppliers deliver, and how long items sit before they sell or go out of date.nover ratio, track overstock incidents, assess supplier performance, and consider inventory aging and obsolescence.

4. Use data to optimize and standardize your pricing.

Your sales data should also guide your pricing. If you order merchandise from vendors, you can set each product’s price once based on cost, margins, and demand, then adjust as trends shift. If your store sells donated items, pricing is a daily job. Every item is different, and manual pricing takes more time as donations grow. Many donation-based stores end up relying on lookup tables, guesswork, or the one volunteer who “just knows” what things are worth. 

To keep your pricing strategy accurate and efficient, implement AI-powered pricing technology. For example, ThriftCart’s inventory management software offers a built-in AI pricing tool that lets staff simply point a phone at an item to get an accurate price in seconds. Using a system like this transforms your backroom operations by:

• Consistent pricing across shifts. Two volunteers pricing similar items on different days are far more likely to land on the same price.
• Shorter training. New volunteers can start pricing on their first shift instead of spending weeks learning what things are worth.
• Faster turnaround during donation surges. When a holiday cleanout fills your back room, your regular team can price, tag, and move items to the floor without calling in extra help.

Whether your prices come from vendor costs, a spreadsheet, or an AI tool, they’re only as useful as your ability to track each item from the moment it hits the sales floor to the moment it sells. For most stores, that means investing in inventory management software.

5. Purchase inventory management software.

Usually, inventory management is packaged as one of many features within larger point of sale (POS) systems. According to ThriftCart, POS systems usually have these core inventory management capabilities:

• Real-time inventory tracking. With barcode scanning and an inventory database, nonprofits that use POS systems can track their stock levels in real time so they always know when they’re running low on merchandise.
• Inventory syncing for physical and online stores. If your shop also sells online, syncing keeps both channels working from the same count. When a shopper buys the last logo sweatshirt on your website, it also comes off the register’s inventory, so no one at the counter can sell a sweatshirt you no longer have.
• Discounting and promotions. If you need to move products that haven’t sold, discounting and promotions are the way to do it. With this feature, you can easily mark down items you want to sell while providing customers with an excellent buying experience.
• Receipts. While not directly related to inventory management, receipts are important for your customers’ records. Plus, if a customer makes a donation on top of their purchase at your nonprofit’s store, eCardWidget recommends sending them a tax-compliant donation receipt within 48 hours. With a POS system, both receipts can be generated right at checkout.

Once you purchase software, train your staff on how to use it. Schedule an onboarding session with the software provider and bring questions about how your store actually runs, such as how to process returns or set up seasonal discounts. Then, put together a guidebook to ensure everyone knows how to operate the system and use it for accurate inventory management. You can use this guide as a helpful resource for future team members during their onboarding. management. You can also use it as a helpful resource for future team members during their onboarding.

A nonprofit store depends on the same basics as any retailer: the right products, at the right prices, on shelves at the right time. With proper inventory management, you’ll ensure your store runs smoothly, raising more funds to further your mission and aid your beneficiaries.