EU 30-Day Lowest Price Rule: Burden or Opportunity?

The EU Omnibus Directive transforms historical pricing into a compliance obligation. Retailers should embed historical pricing into their brand DNA in order to build pricing transparency, reduce customer skepticism, create faster decision cycles, and achieve higher conversion rates.

Since May 2022 the Omnibus Directive EU 2019/2161 (Consumer Protection) came into effect. Part of this directive is to create transparency about product promotions and product prices.

It should be easy for consumers to compare prices and see the lowest price over the last 30-days, ensuring the discount reflects genuine consumer savings. This new directive forces retailers to keep track of their product promotions and clearly show the previous and current prices.

For a retailer it sounds like a burden, but it’s also an opportunity.

What Does the Rule Require Retailers to Show?

Retailers must display the lowest price a product was offered in the last 30 days preceding a price reduction. Any advertised discount must be calculated against that lowest price, not against the current price or a temporarily inflated one.

Historical Prices Explained

Let’s dive in with an example of the historical pricing during one of the most promotion-heavy periods in a year: Black Friday and Cyber Monday.

Especially during this period there is a spike in artificially raised prices to boost reduction percentages. However a promotion must always run on your own lowest price in 30 days.

You’re a retailer selling TVs:

• From October 21st to November 16th, the TV is priced at €1,000.
• From November 16th to November 26th, the price increases to €1,250.
• On Black Friday (November 27th), you advertise a 25% discount.

1. The discount must be applied to the lowest price in the last 30 days: €1,000.
2. The promotional price becomes: €750.
3. The TV then returns to €1,250 during the weekend.
4. On Cyber Monday, you advertise another 25% discount.
5. Now, the lowest 30-day price is €750.
6. The new discounted price becomes €562.50.

The rule prevents artificial inflation before promotions and enforces proactive transparency.

Exceptions to the 30-Day Rule

Progressive Discounts

An exception applies when using an uninterrupted progressive discount. It is allowed to use the initial historical price for three months.

For example: A product is €100. You start with a 10% discount (historical price €100, sales price €90). You then apply a 20% discount (historical price €100, sales price €80) and then a 30% discount (historical price €100, sales price €70).

Newly Introduced Products

If a product has been on the market for less than 30 days, retailers may indicate the lowest price used within a shorter reference period of their choosing.

A Retailers Perspective

Adapting pricing systems presents real technical and operational challenges. Pricing and promotion engines must log every price change and reference historical data. Non-compliance may result in penalties and reputational damage.

However, historical pricing becomes an opportunity when embedded into pricing strategy rather than treat it as a burden.

“Pricing transparency -> Reduced customer skepticism -> Faster decision cycles -> Higher conversion probability.”

Strategic Test: The One-Sentence Rule

A simple test determines whether your pricing strategy builds trust. Can you for example say:

“This 25% discount is calculated from the lowest price we offered in the last 30 days?”

If your organization cannot produce that level of clarity, your pricing architecture is not yet ready. Creating and communicating a clear historic pricing strategy can help your brand stand out:

• A clear “lowest in 30 days” message removes doubt and helps customers decide faster. Especially on high-consideration products.
• A consistent, explainable price signals fairness. Over time, that translates into better reviews, higher NPS, and repeat purchases.
• Transparent pricing history cuts down on complaints about “fake discounts”, refund requests, and disputes around promotional claims. This results in fewer returns and a stronger brand reputation.
• When competitors are vague, your clarity stands out. “Transparent pricing” becomes a differentiator that can win customers even when your discount isn’t the biggest.

Seizing the Opportunity

Don’t look at the directive as another regulatory burden.