Google began rolling out its November 2026 core update on Tuesday evening, and its own measurement advice means deal, voucher and review publishers will not get a clean read on what it did to their rankings until the peak trading weeks are over.
The Google Search Status Dashboard logged the release at 10.06 Pacific time (6.06pm in the UK) and says the update "applies globally and to all languages", which covers Google's UK results. The rollout may take up to two weeks, so the likely finish is around 24 November, three days before Black Friday.
Google's core updates guidance tells site owners to wait "at least a full week" after an update completes before analysing their Search Console data, then to compare that week with the week before the rollout began. On a full two-week rollout, the first clean week starts on 1 December, the day after Cyber Monday. The baseline is the first week of November.
For affiliates, the timing could hardly be worse. Rankings may shift just as Black Friday commissions start rolling in, and the comparison Google recommends pits a quiet early-November week against post-peak traffic. Telling an algorithm loss apart from a seasonal swing will come down to judgement, for publishers and for the advertisers and networks reviewing their Black Friday numbers.
Google says core updates do not target particular sites and has not said what this one changes. Its Search Central team called it "a regular update designed to better surface relevant, satisfying content for searchers from all types of sites".
Comparison sites took a heavy hit in March. An analysis of US Sistrix visibility data by search consultant Aleyda Solis found Skyscanner down 26.5%, Credit Karma down 40.6% and Insurify down 48% after the March 2026 core update, while official and institutional sites gained.
UK shoppers are already waiting for the deals. The BRC-KPMG Retail Sales Monitor for October, published on Tuesday, showed total sales up 1.5% year on year, with non-food flat and in-store non-food down 1.1%. Online non-food grew 1.8%. BRC chief executive Helen Dickinson said shoppers "delayed spending ahead of Black Friday and Christmas".
That deferred demand piles into the window when search-led publishers make most of their year. Some have stopped counting on Google anyway. Ziff Davis is planning for no recovery in search referrals after they fell 37%, and affiliate consultant Julian Henrichs argued back in May that cashback and loyalty publishers are better placed than coupon sites as AI answers start surfacing discount codes directly.
On Google's own timetable, the first fair comparison falls on the Tuesday after Cyber Monday.
