The short answer: do not split your November budget evenly across the days. Treat Thanksgiving to Cyber Monday as one five-phase campaign, hold back a reserve of roughly 15–20% of the total, put the bulk of your spend into retargeting and warm audiences on Black Friday itself, and move money toward whichever day is returning the best cost per purchase. In 2026 that window runs from Thursday 26 November to Monday 30 November.
That is a framework drawn from how we plan these weeks for small advertisers, not a universal law. Your numbers will differ. What matters is that the split is decided before the weekend starts, because the temptation on the day is to panic-spend or panic-pause based on three hours of data.
Why a flat daily budget wastes money in Cyber Week
Auction pressure is not flat across the five days. Competition for the same audiences rises sharply on Friday and Monday, which pushes costs per thousand impressions up for everyone. We covered the mechanics in our piece on how much CPMs rise in Q4. The practical consequence is that a euro spent on cold prospecting on Black Friday usually buys less than the same euro on the Sunday.
At the same time, buyer intent is not flat either. Many people spend Friday browsing and comparing, then buy on the weekend or on Monday. If your budget is identical across all five days, you pay peak prices for the audience least likely to convert and under-fund the audience about to buy.
What is a sensible default split?
Here is a starting point for a store or service business with a single promotion running across the whole period. Treat the percentages as a first draft to adjust against your own margins and past performance.
| Phase | Share of total | Main job |
|---|---|---|
| Thursday (Thanksgiving) | 5–8% | Warm-up: tease the offer to email lists and past visitors |
| Friday (Black Friday) | 25–30% | Retargeting, customer-list audiences, branded search |
| Saturday (Small Business Saturday) | 15–20% | Independent-brand story, local reach, stock-clearing offers |
| Sunday | 10–12% | Cheaper reach, reminders to Friday browsers |
| Monday (Cyber Monday) | 20–25% | Deadline-led second chance, cart abandoners |
| Reserve | 15–20% | Fed to whichever phase is beating target |
Notice that the percentages add up to more than 100 at the top of each range. That is deliberate: you will not hit the top of every range, and the reserve absorbs the difference. If you run Google and Meta together, apply the same shape to each platform, then shift between them using the rule further down.
What should each day actually do?
Thursday and Friday: spend on people who already know you
Your best Black Friday audiences are the ones you built before November: past purchasers, email subscribers, recent site visitors and people who engaged with your social content. They are the cheapest to convert and the least sensitive to peak-auction prices. If you have not built those audiences yet, our week-by-week prep plan shows what to set up and when.
Branded search deserves a protected slice on Friday. Competitors bid on your name during sale periods, and shoppers type your brand plus the word “discount” or “code”. Losing that click to a rival is the most avoidable waste of the week.
Saturday and Sunday: use the cheaper weekend inventory
Weekends typically bring a little relief in costs after Friday’s peak, though that varies by industry and country, so verify it in your own account before relying on it. Saturday suits an independent-brand message: who you are, why you exist, what you stand behind. That framing fits Small Business Saturday in the US and works as a values-led angle elsewhere without needing the label.
Sunday is a good day for stock you want to clear and for gentle reminders to anyone who clicked on Friday but did not buy. Keep frequency in check: people who saw your ad four times on Friday do not need five more on Sunday.
Monday: make the deadline real
Cyber Monday performs best when it is a genuine second chance with a genuine end. “Last day” messaging only works if it is true; if you extend the sale on Tuesday, you teach your audience to ignore your deadlines next year. Put your cart-abandoner and product-viewer retargeting here, and use countdown or end-time language in the creative.
Before Monday, check your delivery promise. Shipping cut-offs matter more than most advertisers expect, and we wrote about how to stop spending on orders you cannot deliver.
How do you decide when to move budget?
Pick your signals before the week starts and write them down. We use three:
- Cost per purchase against break-even. Know your break-even number (price minus costs, divided into what you can afford to pay for one sale). A phase beating it by a clear margin gets more budget from the reserve.
- Frequency on retargeting audiences. If it climbs above roughly four to five impressions per person per day, the creative is wearing out; rotate it rather than adding spend.
- Stock and capacity. A winning ad for a product that sells out is a loss. Check inventory twice a day.
Move money in steps of 20–30% of a daily budget, not in doubles. Large jumps can reset delivery on some campaign types and make a good day look bad.
What pause rule should you set in advance?
The mistake we see most often is switching a campaign off at the first bad hour. Attribution lags, especially for views and for purchases completed on another device later, so early numbers understate results. Our rule of thumb is simple:
- If cost per purchase is more than 1.5 times break-even after roughly six hours with enough spend to expect several conversions, reduce that campaign’s budget by a third.
- If it is still above 2 times break-even the next morning, pause it and move the money to the reserve.
- Never pause a retargeting campaign on a single-hour dip; check it against the previous day’s total.
These multiples are our own working defaults. If your margins are thin, tighten them; if repeat purchases are common, you may tolerate more.
A worked example with round numbers
Suppose a store has €3,000 for the five days. Hold back €500 as reserve, which leaves €2,500. At the default shape that might look like: Thursday €180, Friday €750, Saturday €480, Sunday €300, Monday €790. By Saturday lunchtime the Friday retargeting is returning purchases at 70% of break-even cost, while Saturday’s cold audience is at 130%. You move €200 from the reserve into Saturday and Sunday retargeting and trim Saturday prospecting by a quarter. That is the kind of mid-week adjustment the reserve exists for.
This is an illustration with invented round figures, not client data. The logic, not the numbers, is the point.
What if you sell services instead of products?
Service businesses can use Cyber Week too, but the offer matters more than the calendar. A fixed-price audit, a prepaid package or a gift voucher for a service works; a custom quote does not fit a five-day window. Use the same phased shape, but replace purchase cost with cost per booked call or cost per voucher sold, and make sure someone is available on the Saturday and Monday to respond within an hour.
What to do on Tuesday
Do not switch everything off on Tuesday morning. Carry retargeting at a lower level for a few days to catch the late buyers, then review the whole week against your break-even number. The December follow-on is its own exercise; we put together a playbook for it in our December ad account guide.
Common mistakes we see in Cyber Week
Three errors repeat every year. The first is launching the sale on Friday morning with campaigns that were never tested; a broken checkout link or an unapproved ad costs hours of the most expensive traffic of the year. Approve everything by the Tuesday before and run a test purchase on Wednesday. The second is changing the offer midweek without updating the ads, so people click on a discount that no longer exists and bounce. The third is judging each day in isolation. A person who clicked on Friday and bought on Monday after an email reminder still counts as a Friday ad result in some attribution views and a Monday result in others, so look at the five days as one block when you review.
It also helps to agree who is on call. During those five days, one named person should be able to pause a campaign, fix a disapproved ad or change a budget within an hour. Small teams often discover on Friday afternoon that the only person with account access is on a flight. Decide this in advance, and write down the pause rule where everyone can see it.