Amazon Pricing Rules 2026: Protect Your Margins
Updated: May 2026
What Is Changing and How Do You Protect Your Margins?
Amazon is changing how it calculates Reference Prices in spring 2026, including your Recommended Retail Price (RRP) and your Was Price. If you run constant promotions, your pricing baseline will drop permanently, your Prime Day deal margins will shrink, and Amazon may block your deals entirely. Here is what is changing, when, and what you need to do about it.
What Are Amazon's New Pricing Rules?
Amazon is introducing two major pricing changes in spring 2026. Both are designed to ensure that when a customer sees a deal, it represents a genuine discount. For sellers, this means the days of running continuous promotions without consequences are over.
The changes affect how Amazon validates your RRP and how it calculates your Was Price. Both directly impact the deals you can offer during major events like Prime Day and Prime Big Deal Days.
How Are RRP Checks Changing from 23 April 2026?
From late April, Amazon will no longer accept your stated RRP at face value. To display an RRP on your listing, your product must have actually sold at that price recently on Amazon, or be actively listed at that price by another major retailer.
If your RRP fails this automated check, Amazon will remove it from your listing entirely. It will then fall back on your Was Price to calculate deal discounts instead. This reduces the perceived value of your offers, so your deals need to be discounted from a lower starting point.
What this means in practice: we have seen this trip up sellers who list an RRP higher than what the product actually sells for. Amazon will now cross-check your stated RRP against real transaction data, both on their own platform and across other retailers. If the numbers don't match, the RRP is removed from your listing entirely.
What is the New 50% Was Price Rule from 18 May 2026?
Your Was Price is the typical price customers have paid for your product over the previous 90 days. It is the figure Amazon uses to set your maximum deal price for events like Prime Day.
From May 2026, Amazon is tightening this calculation. According to Amazon's updated Reference Price Policy (Amazon Seller Central, 2026), if your product sells below its standard price for more than 50% of the 90-day lookback window (46 days or more), every one of those discounted sales is factored into your official Was Price. What catches most sellers off guard is that this includes informal price drops too, not just deals you have formally flagged as promotions.
The consequence: run too many sales and your baseline price permanently drops to match your discounted price. When Prime Day arrives, Amazon will force you to discount even further from that already lowered baseline, squeezing your margins into nothing, or blocking your deal entirely for failing to meet the minimum discount threshold.
Why Does Running Constant Promotions Hurt My Prime Day Deals?
When you submit a Prime Exclusive Discount or a Lightning Deal, Amazon requires you to offer a minimum percentage off your validated baseline (your Was Price). If you have been running vouchers or dropping prices right up until the event, you trigger the 50% rule and drag your baseline down.
The knock-on effect is brutal. Once your baseline drops, Amazon's minimum discount requirements force you even lower. We had a client last year who ran vouchers through May and then could not get a Lightning Deal approved for Prime Day because their Was Price had already fallen to within a few per cent of their proposed deal price. They missed the entire event.
At Kangaroo UK, we have seen this catch sellers out repeatedly during previous Prime events. The ones who protect their baseline in advance consistently outperform those who discount right up until the event.
What Is a Promotional Blackout and How Does It Work?
In simple terms, you stop running any discounts for a set period before a big event. No vouchers, no coupons, no quiet price drops, nothing. Your product sells at full price, your Was Price climbs back up, and when you submit your Prime Day deal, the discount is applied to a high baseline rather than an already-reduced one.
How long do you need to hold? At least 45 days. The maths is straightforward: Amazon looks at a 90-day window, and if you are at full price for more than half of that window, your discounted days do not drag the baseline down. Forty-five days gives you a comfortable buffer above the 50% threshold.
For Prime Day 2026, assuming Amazon sticks with the July dates, that means stopping all promotions by late May. The deal submission window is already open and runs from 24 March to 19 June 2026, so get your submissions locked in early and plan your blackout around those dates.
Why Does a Promotional Blackout Actually Work?
It takes nerve to voluntarily pause your offers, especially if you see a short-term dip in daily sales. But the payoff during the event itself is significant:
It protects your profits. Selling at full price for most of the 90-day window keeps your Was Price high. When Amazon requires a 20% Prime Day discount, it's applied to your full retail price, so you still make a healthy margin.
It gets your deals approved. Amazon regularly blocks deals if the proposed price is not clearly lower than your recent selling price. A 30 to 45-day break creates a clean gap between your everyday price and your Prime Deal price, meaning your submissions go through without rejection.
It makes your deals look like genuine bargains. A product that is always on sale does not look like a deal. By holding at full price for a month, your Prime Day discount feels like a real opportunity to shoppers, which drives significantly more sales when the event goes live.
What Should I Do Right Now?
These rule changes are coming in weeks, not months. Here are three things you can do today:
- Audit your current promotions. Review all active vouchers, coupons, and price drops across your catalogue. Check how many days in the last 90-day period each product has been on sale. If you are approaching the 46-day threshold, stop discounting immediately.
- Plan your blackout dates. Work backwards from your target Prime event date. Mark 45 days before as the hard stop for all promotions. Build this into your pricing calendar now.
- Submit your deals early. The Prime deal submission window is open from 24 March to 19 June 2026. Do not leave it until the last minute. Submit your strategy, lock in your deal pricing, and give yourself time to adjust if Amazon flags any issues.
Make sure every listing you plan to promote is retail-ready before the event. There is no point in protecting your pricing baseline if it drives traffic to a listing with poor images or weak content.
How Can Kangaroo UK Help?
Our Amazon account management team monitors pricing rules, deal submissions, and promotional calendars for every client. We build blackout periods into the annual strategy so our clients are always prepared when deal events arrive, not scrambling at the last minute.
We run Amazon PPC campaigns alongside pricing for all our Amazon clients because the two are connected. There is no point spending on ads if your deal margins have already been squeezed by a low baseline, and there is no point protecting your baseline if nobody can find your listing when the event goes live.
For a full guide on event preparation timelines, see our guide on
preparing for Prime Day.
Want help navigating Amazon's pricing changes?
Our Amazon team will review your pricing strategy and make sure your deals are compliant,
profitable, and ready for Prime Day. Book a free Amazon account review or call us on 01530 560177.
Author
Abhilav, Amazon Marketplace Leader , Abhilav leads the Amazon team at Kangaroo UK, managing Seller and Vendor Central accounts for brands across the UK. He advises clients on pricing strategy, deal submissions, and promotional planning for Amazon's major events, including Prime Day and Prime Big Deal Days.
