Shopify Out-of-Stock Products: How to Handle Them Without Losing Sales

Running Out of Stock Should Not Mean Running Out of Revenue

Every growing Shopify store will run out of stock at some point. It might be a seasonal bestseller that sold faster than expected, a supplier delay that left you unexpectedly short, or a sudden spike in demand you could not have predicted. The question is not whether it will happen — it is how well your store is set up to handle it when it does.

Most stores handle out-of-stock products poorly. They show a greyed-out “Sold Out” button, offer no information about when the product might return, and give customers no reason to stay engaged. That is a passive approach that costs you real revenue. This guide covers what to do instead.

The True Cost of a Poor Out-of-Stock Experience

When a customer lands on an out-of-stock product page, they have three choices: look for the product elsewhere, wait and check back later, or give you their contact information so you can notify them when it is back. Without any prompting from your store, almost all of them will do the first option. You lose not just that sale, but potentially that customer forever.

The cost compounds when you consider paid traffic. If you are running Google Shopping or Meta ads that send customers to a product page, and that product is out of stock with no capture mechanism, you are paying for traffic that has no path to conversion. Every dollar of ad spend hitting a dead end is waste.

Strategy 1: Back-in-Stock Notifications

The highest-leverage thing you can do for out-of-stock products is give customers a way to be notified when the product returns. A simple email capture form on the product page — “Notify me when this is back in stock” — converts a lost sale into a warm lead with demonstrated purchase intent.

This is not natively built into Shopify’s core, but there are several apps that add this functionality cleanly. When you restock, the automated notification email goes out, and because these customers have already decided they want the product, conversion rates on back-in-stock emails are typically very high — often 15 to 25 percent, far above standard email campaign averages.

The notification list also doubles as valuable demand signal data. If 300 people have signed up to be notified about a specific product, you know exactly how much restock demand to anticipate.

Strategy 2: Pre-Orders as a Revenue Bridge

If you know a product is coming back — either a restock from a supplier or a new production run — pre-orders let you sell now and fulfil later. This converts demand that would otherwise evaporate into actual revenue and committed customers.

Pre-orders work best when you can give customers a specific and reliable estimated delivery date. Vague promises (“ships soon”) erode trust. Specific commitments (“ships in 3–4 weeks”) feel trustworthy and give customers the information they need to decide whether to wait or look elsewhere.

Be conservative with your estimated dates. An order that ships a week early delights customers. An order that ships a week late damages trust. Always build buffer time into your pre-order estimates.

Strategy 3: Smart Redirects to Similar Products

When a product is out of stock with no return date, consider redirecting its URL to the most relevant alternative product or to a category page. This keeps the customer in your store and gives them another path to purchase, rather than a dead end.

Do this thoughtfully. Redirect to the most genuinely similar product — same function, similar price point, comparable quality. A lazy redirect to an unrelated product feels dismissive and may drive customers away faster than a well-handled “sold out” page.

For products that have been discontinued entirely, the redirect is essential for SEO health as well. A 404 on a formerly high-ranking product page wastes accumulated link equity. A 301 redirect to a relevant replacement page preserves that value.

Strategy 4: Show Expected Restock Dates

Transparency is underrated in ecommerce. If you know when a product is coming back, tell customers. A simple message — “This product is currently out of stock. We expect to restock in early November.” — gives customers what they need to make a decision and signals that you have your supply chain under control.

Many customers will bookmark the page or sign up for a notification and return when the product is back. Some will order now via pre-order. Very few will be put off by honesty. The merchants who hide restock timelines because they are embarrassed about the wait time almost always lose more customers than merchants who are upfront.

Strategy 5: Remove Out-of-Stock Products From Ads

This is an operational step that many stores forget entirely. If a product is out of stock with no pre-order option and no clear restock timeline, pause any ads pointing to that product page immediately. Continuing to pay for traffic to a product that cannot be purchased is pure waste.

Set up a process — or automate it — to check your ad campaigns against your inventory status regularly. Some inventory apps and ad platforms support automatic pausing of ads when inventory drops to zero. This single process change can recover significant ad spend for high-velocity stores.

Strategy 6: Cross-Sell on Out-of-Stock Pages

Even if a customer cannot buy the product they came for, your out-of-stock page is still a piece of prime real estate. Use it to show related products, bestsellers, or new arrivals. A customer who came in looking for one product might discover another they want.

This should be done with genuine relevance, not generic “you might also like” filler. The more closely the suggested products match what the customer was originally looking for, the higher the conversion rate on those suggestions.

Proactive Inventory Management Reduces Out-of-Stock Events

All of the above strategies handle out-of-stock situations reactively. The deeper fix is to reduce how often you run out of stock in the first place. This means investing in demand forecasting, setting accurate reorder points for every SKU, maintaining safety stock for your top sellers, and building supplier relationships that allow for faster restock turnaround.

The OneOnic team works with Shopify merchants to build inventory systems that anticipate demand rather than react to it. For stores that are consistently running out of their best products, the issue is usually not bad luck — it is a process gap that can be diagnosed and fixed systematically. Take a look at our portfolio to see the kinds of operational improvements we have delivered, or contact us to discuss your situation directly.

Out-of-stock is not a failure. It often means your products are popular. How you handle it determines whether that popularity translates into loyal customers or one-time visitors who never come back.