Prime Day 2026 generated $26.4 billion in US online sales across its four days (June 23-26, 2026), up 9.3% year-over-year, according to Adobe Analytics. That made it the biggest online shopping event of the year, ahead of Black Friday and Cyber Monday combined. The sales figures are easy to find. What happens to those orders afterward, once shoppers decide what to keep and what to send back, is the part most coverage skips.
If you sell online, both halves of the story matter. Here is what the current data says about Prime Day 2026 spending, and about the returns that follow a discount-driven shopping event like this one.
How much did Prime Day 2026 generate in sales?
Prime Day 2026 ran four days, June 23 through June 26, and closed at $26.4 billion in US online sales, according to Adobe Analytics, edging past Adobe’s own $26.3 billion pre-event projection and up 9.3% from Prime Day 2025’s $24.1 billion. The first day alone brought in $8.3 billion, up 5.0% year-over-year, with 59% of the four-day total landing in the first two days.
Mobile devices did most of the work. Adobe tracked $14.2 billion in mobile spend, 54.2% of the total, and Numerator put average household spending at $187 across an estimated 59 million participating households.
Figure 1: How the $26.4 billion in Prime Day 2026 spending split between mobile and desktop. Source: Adobe Analytics, 2026.
The pattern holds year over year: shopping events keep shifting toward phones, and Prime Day’s own peak sales hours increasingly cluster around commute and evening scroll times rather than a single desktop-driven surge.
How has Prime Day spending grown since it began?
Prime Day started as a two-day event and only became a four-day event in 2025, so a straight year-over-year comparison needs that caveat attached. Even accounting for it, the trend line only goes up: $12.7 billion in 2023, $14.2 billion in 2024 (up 11%, still a two-day event), then $24.1 billion in 2025 once Amazon expanded the sale to four days (up 30.3%), and $26.4 billion in 2026 (up 9.3%), per Adobe Analytics’ year-by-year tracking.
Figure 2: Prime Day total online sales by year. 2023 and 2024 were two-day events; 2025 and 2026 ran four days. Source: Adobe Analytics.
Prime Day is no longer a standalone summer sale either; it now anchors a broader mid-year promotional stretch that competes for the same wallet as the holiday season. For a look at how this compares to the year’s biggest sales window, see our 2026 holiday ecommerce forecast, which projects $1.01 trillion to $1.02 trillion in US holiday retail sales for November and December 2025.
Growth is slowing even as the dollar totals climb: 2025’s expansion to four days produced a 30-point jump, while 2026’s like-for-like growth settled at single digits, a more typical pace for a maturing shopping event.
Is AI shopping changing how people buy on Prime Day?
Yes, and the shift accelerated sharply in 2026. AI-referred shopping traffic grew 103% year-over-year across the four-day event compared to June 2025, and that traffic converted 40% better than non-AI channels such as paid search, email, and social, according to Adobe Analytics. That is a reversal from Prime Day 2025, when AI-referred traffic actually converted 23% worse than other channels.
Adobe’s underlying engagement data explains the shift. Shoppers arriving via AI tools spent 49.9% longer on retailer sites, browsed 20.5% more pages, and added items to cart at a 33% higher rate than shoppers from other channels.
Figure 3: How AI-referred shoppers behaved differently from other Prime Day 2026 visitors. Source: Adobe Analytics, 2026.
An AI-referred visitor who converts at a higher rate is still a first-time or repeat customer who can return the item, so the AI-shopping surge does not change return exposure on its own. It does mean a growing share of Prime Day traffic is arriving already comparison-shopped, which retail analysts have linked to somewhat lower price sensitivity but no measurable change in return behavior so far.
Which categories got the deepest Prime Day discounts?
Discount depth varies a lot by category, and it decides which departments generate the most post-sale returns. Across recent Prime Day events, apparel has carried the deepest average discount at 24%, ahead of consumer electronics at 23%, toys at 19%, and televisions at 18%, according to Adobe Analytics and Statista’s category-level discount tracking.
Figure 4: Average discount depth by category across recent Prime Day events. Source: Adobe Analytics, Statista.
Discounts got shallower on the margin in 2026: the share of Prime Day offers landing in the 10% to 19% off range rose to 37.0% on the event’s first day, up from 32.2% in 2025, per Adobe’s day-by-day tracking of Amazon’s US catalog. Apparel remains the category most likely to see a deep, impulse-driving discount, and it is also one of the categories retailers consistently report as hardest to keep out of the returns queue.
How many Prime Day purchases end up getting returned?
Amazon and Adobe do not publish a return rate specific to Prime Day. The closest US benchmark comes from the National Retail Federation and Happy Returns’ 2025 Retail Returns Landscape report: an overall 15.8% return rate across all of 2025, and a 19.3% return rate for online purchases specifically, on $849.9 billion in total merchandise returns. That is down slightly from 2024’s 16.9% rate and $890 billion in returned merchandise.
| Metric (US, calendar year) | 2024 | 2025 |
|---|---|---|
| Overall return rate | 16.9% | 15.8% |
| Online return rate | Not broken out separately | 19.3% |
| Total merchandise returned | $890 billion | $849.9 billion |
Source: National Retail Federation and Happy Returns, Retail Returns Landscape reports.
Warning
Treat any single “Prime Day return rate” figure with caution. A UK-focused Manhattan Associates study published in June 2026 estimated that 47% of Prime Day purchases in Britain would come back, with an estimated 61 million of 131 million items returned, and return rates as high as 73% among Gen Z shoppers versus 44% among shoppers over 55. That study did not disclose its underlying sample size, was denominated in British pounds, and covers UK shopping behavior, not the US market this post otherwise focuses on. No comparably sourced US-specific Prime Day return rate exists yet.
A return this size still starts the same way every return does: a shopper checking whether the item can go back, and how long they have to do it. A Refund Policy Generator that states the return window and refund timeline in plain language up front reduces the back-and-forth that turns a routine return into a support ticket.
Figure 5: The minimum test a return policy should pass around a high-volume sale event. Source: synthesized from NRF and Manhattan Associates findings above.
Toys, games, and baby products carried the highest return rate of any category in the UK dataset, at 40.68%, which lines up with the deep discounting those categories typically see during Prime Day in the US market too. Stores selling into those categories carry the most exposure when a sale event drives a spike in orders.
Do returns spike right after Prime Day?
Search interest says yes. Return-related search queries jumped 22% year-over-year in the July following Prime Day, and nearly 1 in 3 Prime Day-related searches involved refunds, returns, or order cancellations, according to a DesignRush analysis of Google Keyword Planner data covering US search behavior. The elevated interest did not stop in July either: August accounted for 28% of return-related searches that year, itself a 31.8% increase over the same month a year earlier.
Figure 6: When post-Prime Day return interest actually peaks. Source: DesignRush analysis of Google Keyword Planner data.
The same analysis flagged buy now, pay later exposure as a specific risk: with BNPL orders making up a growing share of Prime Day purchases, DesignRush projected up to $1.2 billion in potential BNPL refund exposure tied to the 2025 event, since a returned item bought on a payment plan still needs an installment schedule unwound. This pattern echoes what stores see after the holidays too: see our holiday returns data for 2026, where 17% of holiday sales were expected to come back this season, close to the same order of magnitude as the return pressure that follows Prime Day.
The Bottom Line
Prime Day 2026’s $26.4 billion headline number is real, and so is the return wave that follows it. US retailers are already processing return rates near 1 in 5 for online purchases in a normal year, and a discount-driven event that pulls forward demand into a single week tends to pull forward returns the same way, concentrated in the weeks right after. Store owners do not control Amazon’s return policy, but they do control their own: a return window that covers the post-sale timing, a policy that is visible at checkout, and a refund timeline stated in plain language keep a predictable spike from turning into a support backlog.
Frequently Asked Questions
How much did Prime Day 2026 generate in sales? Prime Day 2026 generated $26.4 billion in US online sales across its four days (June 23-26, 2026), up 9.3% year-over-year, according to Adobe Analytics, beating Adobe’s own pre-event estimate of $26.3 billion.
What is the return rate for Prime Day purchases? Amazon and Adobe do not publish a return rate specific to Prime Day purchases. The closest US benchmark is the National Retail Federation and Happy Returns’ 2025 Retail Returns Landscape report, which put the overall 2025 return rate at 15.8% and the online return rate at 19.3%. A UK-focused Manhattan Associates study estimated a much higher 47% Prime Day return rate for British shoppers, but that figure has not been replicated for the US market.
Did AI shopping tools play a bigger role in Prime Day 2026? Yes. AI-referred shopping traffic grew 103% year-over-year during the four-day event and converted 40% better than non-AI channels like paid search and email, according to Adobe Analytics, a sharp reversal from 2025 when AI traffic converted 23% worse.
How much of Prime Day 2026 spending used buy now, pay later plans? Buy now, pay later plans accounted for 6.4% of all Prime Day 2026 first-day orders and generated $461 million in revenue, up about 20% from the prior year, according to Adobe Analytics data cited by eMarketer.
Sources and References
- Adobe Analytics. (2026). “AI Shoppers Convert 40% Better as Prime Day Hits $26.4B.” Prime Day 2026 total spend, AI traffic, and mobile share data.
- Fortune / Adobe Analytics. (2026). “Amazon Prime Day Total Online Spending Surpasses Adobe Estimate.”
- Digital Commerce 360. (2026). Prime Day 2026 sales projection, Numerator household spending data, and comparison to Black Friday/Cyber Monday 2025.
- TechCrunch / Adobe Analytics. (2024). “Amazon Prime Day 2024 Sales Hit Record $14.2 Billion.” Historical 2023-2024 Prime Day totals.
- National Retail Federation and Happy Returns. (2025). “2025 Retail Returns Landscape.” US overall and online return rates.
- ChannelX / Manhattan Associates. (2026). “Estimated 61 Million Items Expected to Be Returned After Prime Day.” UK-focused return study, no disclosed sample size.
- DesignRush. (2025). “Buy Now, Refund Later: Amazon’s $1.2B Post-Prime Day Risk Retailers Can’t Ignore.” Google Keyword Planner analysis of return-related search behavior.
- eMarketer. (2026). “Soaring BNPL Use During Prime Day Reflects Increasing Demand for the Payment Method.”
- Capital One Shopping Research. Category-level Prime Day discount depth, citing Adobe Analytics and Statista.
Note: All figures verified as of September 2026. Prime Day sales and post-event return data are refreshed at least twice a year to keep pace with each new event.
