Amazon Prime Day 2025: Inventory Planning Tips to Avoid Stockouts

Behold! One of the most awaited times of the year is just around the corner. Yes, we are referring to the Amazon Prime Day sale 2025, scheduled to take place from July 8th to July 11th this year. To date, this is the longest Prime Day, spanning four days. According to Adobe Analytics, in 2024, Prime Day generated over $14.2 billion in global sales, representing a $3 billion increase from the previous year. This staggering number indicates a surge in demand due to Amazon Prime Days offers, and this could also deplete your inventory in just a few hours during the sale.
A stockout in such circumstances can have adverse effects, as it will result in lost sales, a drop in your ranking, and a decline in long-term customer trust. It is, therefore, necessary to have proper inventory management and planning strategies in place to keep your virtual shelves stocked and the revenue flowing.
Let us look at different strategies with which you can prevent stockouts on this prime day!
What is Amazon Prime Day Sale 2025?
Amazon Prime Day Sale 2025 is one of the biggest annual sales events on Amazon, specifically designed for Prime members. The first Amazon Prime Day took place in 2015, marking Amazon’s 20th anniversary. People with Prime membership get good deals on Amazon Prime Day on a wide variety of products.
For sellers, the Amazon Prime Day sale is a great opportunity, as the sales are quite high. It is more than a sales event; it is the time when a brand can gain thousands of customers that will come back to them again.
Moreover, it is also a good time to move overstocked products. Additionally, there are various tools that will help you gather data on various aspects, such as customer behaviour and product performance, and sometimes even understand your competitors’ marketing strategies.
Important Dates for Prime Day 2025
Knowing the Prime Day 2025 dates is important for sellers. For starters, this year, the Amazon Prime Day sale is for 4 days: from July 8th to July 11th. It is an opportunity for the seller to have a strong brand presence, increase visibility, drive more sales, and attract thousands of shoppers. For customers, the Amazon Prime Day sale starts on July 8th and ends on July 11th, but for sellers, it’s not just four days; preparation and strategic planning must begin months in advance.
Let us look at some dates that are critical for sellers to make the most of Amazon Prime Day 2025:
Date | Deadline / Event | Description |
March 18 | Deal Scheduling Opens | Brands can begin scheduling Prime-Exclusive Best Deals and Lightning Deals. |
May 5 | First Day to Submit Prime-Exclusive Price Discounts | Sellers may start submitting Prime-exclusive price discounts; submissions close 12 hours before Prime Day end time. |
May 23 | Final Deadline to Schedule Lightning & Best Deals | Last day to set up Lightning Deals and Prime-Exclusive Best Deals before Prime Day. |
June 6 | Deal Scheduling Closure | Amazon cuts off scheduling for all deal types (Best & Lightning) for Prime Day |
June 9 | Minimal Shipment Splits Inventory Arrival | Inventory shipped via minimal splits must arrive at fulfilment centres. |
June 18 | Amazon-Optimized Shipment Splits Inventory Arrival | Last date for inventory using Amazon-optimised splits to be checked into Amazon FCs. |
Why Does Stockout Prevention Matter?
Amazon Prime Day 2025 is not just an average sales event; it is a high-stakes and high-velocity marketplace where stockouts can significantly impact both your sales and brand reputation. Here are some reasons why stockout prevention is critical for sellers for the upcoming Amazon Prime Day 2025:
- Each minute that your product is out of stock is a lost opportunity to attract potential customers. Considering that independent sellers sold more than 200 million items during Amazon Prime Day sale offers in 2024, if your inventory runs out mid-event, you may forfeit your chance to tap into this huge demand.
- Stockouts can hurt your Buy Box eligibility and organic ranking. Also, the ASIN drops in search results. Additionally, recovery after an event can be slow and expensive due to the loss of momentum.
- Whether you are running a social media ad or Amazon PPC, stockouts will result in a waste of your marketing funds. It will eventually impact your ROI.
- Stockouts also hamper customer trust and brand loyalty. It can lead to negative reviews, cart abandonment, and also long-term loyalty loss.
- If a seller uses Fulfilled by Merchant (FBM), stockouts and delivery failures can lead to several account performance issues. In some cases, it can also lead to account suspension.
Avoid Stockouts: Amazon Prime Day Sale Inventory Strategies
Avoiding stockouts is quite essential for the upcoming Amazon Prime Day 2025. It is achievable via strategic forecasting, apt operational control, and, more importantly, proactive logistics. Here are the Amazon Prime Day sale inventory strategies which will greatly assist sellers and ensure that they are stocked up throughout the event:
1. Demand Forecasting
Forecasting demand is an imminent step in preparing for the Amazon Prime Day Sale. You can analyse past Prime Day sales along with the seasonal trends and real-time consumer behaviour data to get an idea about future demand and decide on products accordingly.
2. Place Purchase Orders
It is essential to avoid missing shipping windows, especially for imported goods; hence, do not delay ordering from suppliers. You can place a purchase order about 8 to 10 weeks before the Amazon Prime Day sale 2025, considering the lead times for production, customs clearance, inspection, and final-mile delivery.
3. Work According to Amazon’s Shipping Deadlines
Amazon has deadlines in place for inventory to arrive at fulfilment centres. Ensure that you do not miss this window. Missing the window can result in the inventory not being available for the event. Hence, it is better to ship in advance and monitor the FC check-in progress using Amazon’s shipping tracking tools.
4. Real-time Inventory Level Monitoring
It is ideal to have a tracking dashboard to monitor the stock levels throughout the event. Moreover, you can also set alerts for SKUs that are fast-moving so that in case there is a chance of stock out, you can replenish it quickly.
- You can use Amazon’s restock inventory tool, as well as inventory health reports.
- For products that are low in stock, you can pause ads to avoid over-selling and losing the Buy Box.
5. Fulfilment Channels Diversification.
Although FBA is efficient, it can be risky to rely completely on it, especially during high-traffic events. You can also have fulfilment done by the merchant (FBM) as a backup option. It will help you to continue selling even if the FBA inventory is low.
6. Relocation of Ads and Promotion.
Depending upon these stock levels, you can reassign your advertisement budget to well-stocked ASINs.
- You can monitor PPC performance along with inventory.
- You can temporarily pause Lightning Deals for low inventory ASINs.
7. Dry Run Before Prime Day
You can opt to run a simulated inventory surge scenario around two weeks before Amazon Prime Day. It will help you identify gaps in supplier responsiveness, fulfilment readiness, and ad-spend optimisation.
8. Have a Backup Plan
Disruptions can occur at any time, even if you have strategically planned everything. Hence, it is essential to have a backup plan in place in case you are running low on a high-demand product.
- Have an emergency contact list for suppliers.
- FBM listings ready to activate
- Budget reassignment
- Pre-approved ad pause
Activities that Seller Must Perform
Since Amazon Prime Day is quite close, it is essential to have a plan of action ready based on past results, demand forecasts, and other relevant aspects. Here is an example of how the seller can plan their days leading up to Prime Day.
Date Range | Task/Activity | Details |
May 15–20 | Forecast Demand | Analyze 2024 Prime Day data, identify hero ASINs |
May 20–31 | Order Inventory | Place PO with buffer stock (50–100% over average demand) |
June 1–10 | Create Campaign Assets | Banners, ad copy, A+ Content, Lightning Deal banners |
June 5–15 | Submit Lightning Deals / Coupons | Final deadline: ~3–4 weeks before Prime Day |
June 10–28 | Ship to FBA | Ensure inventory arrives by Amazon’s cut-off (~June 18) |
June 25 | Audit FBA Stock + Activate Ads | Check inventory status, set campaign budgets and bids |
July 1–5 | Teaser Campaigns / Email Lists | Send countdown emails and warm up retargeting audiences |
July 7 | Final Testing / Backup Systems | Check pricing, ad placement, FBM backups ready |
July 8–11 | Prime Day Campaign Live | Monitor stock levels, adjust PPC, shift traffic based on availability |
July 12–15 | Post-Event Restock Orders | Restock hot ASINs ASAP for Q3 & Early Access Prime Day (if applicable) |
July 15–20 | Performance Audit | Analyze results, returns, stockouts, ad spend, and prepare insights doc |
Be Prime Day Ready With Alternate FBA Solutions By WareIQ
WareIQ has helped eCommerce brands across categories overcome these challenges using its on-demand full-stack fulfilment solution that includes:
- Flexible capacity fulfilment centres across 12+ cities across India – ramp up or down storage space as per order surges during the festive sales season; store inventory closest to customers to increase regional utilisation.
- Get Seller Flex, FAssured, and other marketplace benefits with us, as our warehouses are 100% compliant with marketplace seller programs & SLAs
- Minimise inventory holding costs by fulfilling orders for all channels – your website & multiple marketplaces – from one common inventory pool
- Get access to a central tech platform that can integrate with all your sales channels, ERP, WMS, etc., to manage all your orders, inventory, and shipments.
Conclusion
Amazon Prime Day Sale 2025 is a brand-defining moment for sellers. This can shape your performance for the rest of the year. Considering the competitive and dynamic marketplace, it is essential to maintain stock availability during the event. Avoiding stockouts is not just about keeping your digital shelves full; it is more about retaining buy-box dominance, maximising customer satisfaction, and building momentum that will carry through Q3 and also have a great sale the next holiday season. You need to be proactive for Prime Day. It will be immensely helpful to forecast with precision, optimise logistics timelines, stay alert for stockouts, and have backup plans ready. Strategic planning will yield positive results, and sellers cannot just ride the wave but lead it.
FAQs
Is overstocking a good strategy to avoid stockouts?
Not necessarily. Overstocking can lead to long-term FBA storage issues and also reduce IPI scores. Accurate forecasting can help with a well-calculated buffer that can be used instead of overstocking.
How much extra inventory should be carried for Prime Day 2025?
As a general rule, it is best to carry 52% to 100% more inventory for top-performing ASINs.
Should I run the lightning deals on products with low stock?
No, it is not ideal to run a lighting deal on a low-stock ASIN, as it increases the risk of disappointing customers. It will not only damage your seller metrics but also lead to you losing the Buy Box.
Is Amazon Prime Day only for Prime members?
Yes, the Amazon Prime Day sale is exclusively for Amazon Prime members.