Black Friday 2026 in Czechia: Dates and How to Check Discounts

Black Friday 2026 falls on Friday, 27 November, and Cyber Monday on 30 November. Czech shops stretch the sales over weeks, though, and the first "Black Friday" deals start in early November. Since 2023 a discount in Czechia may only be calculated from the lowest price of the previous 30 days, yet inspections show that advertised discounts are still often inflated. Here is how the 30-day rule works, what inspectors and analysts found last year and how to check a discount yourself. Around Prague checked the facts on 29 October 2026.

Dates in 2026

• Black Friday: Friday, 27 November 2026 (the day after US Thanksgiving).
• Cyber Monday: Monday, 30 November 2026, traditionally the day of online deals.
• In practice many Czech e-shops and chains run a "Black Week" or month-long promotions, so the same item can go down and up in price several times.

The 30-day rule: how a discount is calculated by law

Since January 2023, section 12a of the Czech Consumer Protection Act has applied: when a seller announces a discount, it must state the lowest price at which the product was offered and sold in the 30 days before the discount, and calculate the discount from that price. The rule covers both physical shops and online stores, and every form of advertising: price tags, leaflets, shop windows and websites. It closed the old trick of raising prices just before a sale to advertise "up to −90%".

• Step-by-step promotions: if the discount grows gradually during one promotion, the reference stays the lowest price before the promotion began.
• Coupons: in 2025 the Czech Trade Inspection Authority (ČOI) confirmed that a public coupon shown directly on a product page is also a discount, and the price with it must count towards the 30-day minimum.

What the Black Friday 2025 checks found

In autumn 2025 ČOI ran a special inspection of sales: 77 checks in physical shops, 20 online stores, and another 19 e-shops (about 380 products) monitored with an EU price-tracking tool. Preliminary results published on 12 January 2026 found:

• 10 cases of unfair practice that could mislead buyers about a price or a saving;
• 6 cases of untrue information;
• 7 breaches of the duty to state prices correctly;
• 3 cases where the lowest price of the past 30 days was missing.

Hlídač shopů, an independent project that tracks price histories, concluded in its Black Friday 2025 analysis that public coupons were the main problem. Shops lowered prices with a coupon weeks before the sale but left that price out of the 30-day minimum, so the advertised discount looked bigger than the real one. It found discrepancies at Alza (more than 17,000 products), Notino, Mironet and Grizly, among others, while Knihy Dobrovský's advertised discounts matched the price history. The least transparent were the marketplaces Temu, Shein, AliExpress and Trendyol, which calculate discounts from a "recommended" or historical price rather than the 30-day lowest.

How to check a discount yourself

• Price history: the Hlídač shopů browser extension shows the price history and the real discount right on the product page; the Heureka comparison site also shows price histories.
• Plan ahead: make your shopping list in early November and note today's prices, so you can see straight away whether something got cheaper.
• "Recommended price": a discount from the doporučená cena or the manufacturer's "usual price" tells you nothing about the real saving. Compare with the 30-day price and with other shops.
• Coupons and loyalty cards: check whether the item was already cheaper with a coupon or loyalty price before Black Friday.
• Save without sales, too, using discount apps in Czechia.

Your rights as a buyer

• 14 days to return: goods bought online can be returned without giving a reason within 14 days of delivery; the shop must refund you within 14 days of your withdrawal.
• Warranty: 24 months on new goods; keep the receipt or order confirmation.
• Christmas shopping: many shops extend the return period over the holidays; check the conditions on the shop's website.
• Complaints: if you think a discount is fake, you can file a complaint with ČOI through its website.

How to avoid scams

• Check the shop against the list of risky e-shops kept by ČOI.
• Look for the seller's details on the website (company name, IČO registration number, address) and for genuine reviews.
• Pay by card rather than by bank transfer to an unknown shop: if something goes wrong, your bank can dispute the payment.
• Don't click links to "incredible deals" in text messages and messengers.

Frequently asked questions (FAQ)

When is Black Friday in 2026?

On Friday, 27 November 2026. Cyber Monday is on 30 November. Many Czech shops start their promotions earlier, in early November.

What price is a discount calculated from in Czechia?

From the lowest price at which the product was offered and sold in the 30 days before the discount (section 12a of the Consumer Protection Act). The shop must state it.

Do coupons count?

Yes. According to ČOI's 2025 position, a public coupon on the product page is a discount, and the price with it counts towards the 30-day minimum.

Can I return something bought on Black Friday?

Yes. If you bought it online, within 14 days without giving a reason, as with any other online purchase.

Where can I complain about a fake discount?

To the Czech Trade Inspection Authority (ČOI), using the complaint form on its website.

Sources: ČOI: results of sales inspections (12 Jan 2026), Kurzy.cz: Hlídač shopů analysis of Black Friday 2025, Lupa.cz, Novinky.cz on the 2023 rules.

See also: Discount apps in Czechia, Where to buy groceries cheaply in Prague, Prague Christmas markets 2026.

Cover photo: Max Fischer / Pexels.

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