In this article you'll find everything you need to know about your BFCM ad budget. It's written and kept up to date by Mattia Chiaruttini, ecommerce marketing consultant since 2016. Read it to the end, and if you have questions, send me a message.
Black Friday is won with budget decisions made in October, not on the Friday. Your BFCM ad budget has to answer three questions before the auction gets expensive: how much can you pay for an order, how many new customers do you want, and who should see your ads first. This guide walks through each one, and for the pacing part I used something most guides don't: the actual day-by-day search curve from Cyber Week 2025.
If you want someone to plan it with you, that's part of my work as a Meta Ads consultant.
In short
- Start from break-even CPA on the discounted price, not from last year's spend.
- Costs climb through November: late-November CPMs ran about 22% above the first half of October in 2025.
- Split budget in three layers: new customers, warm audiences and retargeting.
- Pace with the demand curve: Black Friday searches hit 2.3 times Thanksgiving, and Cyber Monday has a strong second day.
- Decide in advance when you stop or cut, using MER and new-customer cost.
Why does Black Friday change your ad budget?
Three things move at once. First, the market: Adobe counted $44.2 billion of US online spend in Cyber Week 2025, with Black Friday at $11.8 billion and Cyber Monday at $14.25 billion. Second, the price of reach: in GeistM's Meta data, CPMs rose 7% in the second half of October, 3% in the first half of November and 11% in the second half, which stacks to roughly 22% more than the first half of October. Third, your margin, because the offer usually cuts it.
Shoppers also start earlier than the event. In the NRF 2025 holiday survey, 42% of consumers said they planned to start shopping before November. For the full six-week plan, read the Black Friday strategy for ecommerce.
How do you work out a Black Friday ad budget?
Work backwards from margin. Find your break-even CPA in the break-even ROAS calculator, using the discounted price, because that is the margin you will really have.
Example with round numbers: a $60 order discounted to $48 (product $18, shipping $7, payment fees 3%, other costs $2) leaves $19.56 before ads. That is your maximum CPA.
| Cost per new customer | Profit per order | Result on 400 new customers | Weekend spend |
|---|---|---|---|
| $17.00 | $2.56 | +$1,024 | $6,800 |
| $19.56 | $0.00 | $0 | $7,824 |
| $22.00 | -$2.44 | -$976 | $8,800 |
Same 400 customers, same offer: the $5 difference in CPA is the difference between earning about $1,000 and losing about $1,000. That's why the budget is a margin decision first, a reach decision second.
How should you split spend between audiences?
Think in three layers instead of campaigns:
- New customers: people who have never bought. Most of the budget goes here, and this is where costs rise most.
- Warm audiences: email list, waitlist, past visitors. Cheaper, and the best place to test the offer.
- Retargeting: people who visited or added to cart in the last days. Small budget, high urgency.
Example split for a $10,000 Cyber Week budget: $6,000 for new customers, $2,500 for warm audiences and $1,500 for retargeting. These are example numbers; the right split depends on the size of your list. The bigger your list, the less you need to buy cold reach at peak prices.
What does the Cyber Week 2025 search curve tell you about pacing?
I downloaded the daily Google Trends data for US searches around Cyber Week 2025. Each column is scaled to its own peak (100), so the two columns are not comparable with each other.
| Day (2025) | "black friday" searches | "cyber monday" searches |
|---|---|---|
| Fri Nov 21 | 12 | 2 |
| Wed Nov 26 | 24 | 4 |
| Thu Nov 27 (Thanksgiving) | 43 | 5 |
| Fri Nov 28 (Black Friday) | 100 | 14 |
| Sat Nov 29 | 32 | 23 |
| Sun Nov 30 | 14 | 39 |
| Mon Dec 1 (Cyber Monday) | 8 | 100 |
| Tue Dec 2 | 4 | 46 |
| Wed Dec 3 | 2 | 7 |
- Thanksgiving is not nothing: searches for "black friday" were at 43% the day before the peak.
- Black Friday itself is 2.3 times Thanksgiving and 3 times the Saturday.
- Sunday is when Cyber Monday starts: its searches go from 23 on Saturday to 39 on Sunday.
- Cyber Monday has a second day: Tuesday kept 46% of the peak. Many brands switch off on Monday night.
My reading, not a rule: for 2026, with Thanksgiving on November 26, Black Friday on November 27 and Cyber Monday on November 30, a pacing like this follows the curve:
| Day (2026) | Share of event budget | What the budget does |
|---|---|---|
| Thu Nov 26 | 10% | Early access, warm audiences, last tracking checks |
| Fri Nov 27 | 30% | Full offer, all audiences |
| Sat Nov 28 | 12% | Steady, lower competition |
| Sun Nov 29 | 13% | Ramp up for Cyber Monday |
| Mon Nov 30 | 25% | Last chance, urgency and shipping cutoffs |
| Tue Dec 1 | 10% | Extended offer for people who missed it |
Check it against your own sales curve from last year: your customers may peak earlier or later than the market.
A six-week BFCM plan for 2026, week by week
With Black Friday on November 27 and Cyber Monday on November 30, here is the order I would work in. Dates are for 2026.
| When | What to do | Budget move |
|---|---|---|
| Oct 16 to Oct 22 | Check tracking (pixel plus Conversions API), calculate break-even CPA on the discounted price, brief creative | No change |
| Oct 23 to Nov 5 | Build the waitlist or early-access list, test two or three offer angles on warm audiences | Small tests only |
| Nov 6 to Nov 19 | Lock the winning offer, ramp spend in 20% steps if new-customer cost holds | Raise in steps |
| Nov 20 to Nov 25 | Final checks: stock, shipping promise, landing page speed. Freeze structure | Hold. No new campaigns |
| Nov 26 to Dec 1 | Run the event with the pacing table above. Review every few hours against your stop-rules | Event budget |
| Dec 2 to Dec 8 | Extended offer and retargeting for people who missed it, then taper | Cut fast |
What about the 25% overspend and tight budgets?
Meta says it may spend up to 25% more than your daily budget on days with better opportunities. On a $1,000 daily budget, a strong day can reach $1,250. If you have a hard cap for the whole weekend, set the daily budgets with that in mind, or use a lifetime budget so spend is paced across the whole period.
How big should the budget be? Three example sizes
The split matters more than the total. Using the 60/25/15 split from above, with the $17 target CPA and the $48 discounted order from the example:
| Total event budget | New customers (60%) | Warm audiences (25%) | Retargeting (15%) | New customers at $17 CPA | Profit from that layer |
|---|---|---|---|---|---|
| $5,000 | $3,000 | $1,250 | $750 | 176 | +$452 |
| $10,000 | $6,000 | $2,500 | $1,500 | 353 | +$904 |
| $25,000 | $15,000 | $6,250 | $3,750 | 882 | +$2,259 |
These are example numbers: your own list size, margin and AOV change all of it. Note that this counts only the new-customer layer. Warm audiences and retargeting convert people you already paid to reach, so their return depends on how well you built the list before November.
Stop-rules: when to scale, hold or cut
Write these down before the weekend. With a break-even ROAS of 2.45 on the discounted price (the same maths as the break-even CPA of $19.56), my rules look like this. They are my working rules, not Meta guidance:
| What you see | What I do |
|---|---|
| New-customer CPA below $17 for several hours | Hold, or raise spend by up to 20% if stock and shipping allow |
| CPA between $17 and $19.56 | Hold. You are still profitable, but with little room |
| CPA above $19.56 for three or more hours | Cut spend by 20% and check creative, offer and tracking |
| Stock or shipping promise at risk | Stop or switch the offer, whatever the CPA says |
| MER falls while platform ROAS looks fine | Trust the MER and investigate duplicate orders |
When do you cut or stop spending?
Set the rules before the weekend. I cut when new-customer cost stays above break-even for several hours, or when stock or shipping can no longer keep the promise. I watch the MER rather than platform ROAS, because platforms count the same sale more than once.
The day after Cyber Monday: the follow-up window
The Google Trends data above shows something many brands miss: searches for "cyber monday" were still at 46% of their peak on Tuesday, December 2, 2025, then fell to 7 by Wednesday. That gives you about one extra day of demand, and then it is gone. A reasonable use of it:
- Tuesday: keep retargeting on, with a short extension of the offer for people who missed it.
- Wednesday: taper new-customer spend sharply, since the search interest has collapsed.
- After that: shift budget to follow-up: post-purchase emails, reviews and cross-sell to the customers you just paid to acquire.
What to prepare before Black Friday week
- Break-even CPA calculated on the discounted price.
- Tracking checked: pixel and Conversions API with deduplication.
- At least a handful of genuinely different creative concepts.
- Waitlist or early-access list built before November.
- Shipping and stock confirmed for the offer.
- A budget cap that accounts for the 25% daily overspend.
- A decision on who checks the numbers, and when.
BFCM ad budget: frequently asked questions
How much should I spend on Meta Ads for Black Friday?
There's no universal number. Start from your break-even CPA on the discounted price, decide how many new customers the weekend should bring, and work back to a budget. Never raise spend further than your MER can carry.
Should I increase my budget before Black Friday?
Raise it in steps in the two weeks before, so the campaign has time to adjust, and use that period to build warm audiences with a waitlist or early access. Costs rise through November, so spending early on lists is cheaper than buying the same people at the peak.
Can Meta spend more than my daily budget on Black Friday?
Yes. Meta says it may spend up to 25% more than your daily budget on days with better opportunities. If your limit is firm, plan around 125% of the daily budget on your biggest days.
Is Black Friday ad spend worth it for a small brand?
It can be, if the offer protects margin and you know your break-even. If every order loses money before ads, a bigger budget just loses more.
When should I stop ads on Cyber Monday?
Not on Monday night. In 2025, US searches for "cyber monday" were still at 46% of their peak the day after. Stop when shipping can no longer promise delivery for the offer, or when new-customer cost passes your break-even and stays there.
What is a good ROAS for Black Friday?
There isn't one. Your break-even ROAS on the discounted price is the floor: in our example, 2.45. Anything above it earns money on the first order. Compute yours in the break-even ROAS calculator.
How early should I start Black Friday campaigns?
Warm-up work, like building the waitlist and testing offers, can start six weeks before. Full event spend belongs to the days of the event itself.
Should I use lifetime or daily budgets during BFCM?
A lifetime budget paces spend over the whole period and suits a fixed event, while daily budgets give more control day to day. Remember Meta can spend up to 25% more than a daily budget on a strong day.
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