How much should I spend on Black Friday ads?
Last updated
After the Black Friday discount, not your usual margin. It sets the line every day has to clear.
What is left of a sale order after the cost of goods, fees, shipping you absorb and the discount.
Enter your gross margin as a percentage between 1 and 99. It sets the MER every day of the plan has to clear, so nothing can be planned until it is supplied.
- Gross margin during the saleNeeded
- A total ad budget, or a store revenue targetThen
- Target MER, if you plan above break-evenOptional
- AOV, to see orders as well as revenueOptional
- TeaserBlack Friday
- Wed 28 Oct to Thu 12 Nov
- Main offerBlack Friday
- Fri 13 Nov to Thu 19 Nov
- ReminderBlack Friday
- Fri 20 Nov to Mon 23 Nov
- Final urgencyBlack Friday
- Tue 24 Nov to Thu 26 Nov
- Event dayBlack Friday
- Fri 27 Nov
- Final urgencyCyber Monday
- Sat 28 Nov to Sun 29 Nov
- Event dayCyber Monday
- Mon 30 Nov
- TailCyber Monday
- Tue 1 Dec to Thu 3 Dec
The days and phases come from the November ecommerce marketing calendar. For a single campaign rather than the whole sale, the break-even ROAS calculator draws the same line per channel, and the ROAS calculator sets platform ROAS beside MER once the sale is live.
No benchmark and no forecast is used: every figure comes from the margin, MER and budget you enter. The currency is a label only and nothing is converted. Nothing you type is sent anywhere.
MER, margin and the shape of the BFCM window
Break-even MER is the store revenue each ad dollar has to bring in before the ads have paid for themselves, so a store selling at a 60 percent gross margin through Black Friday needs 1.67 dollars of revenue for every dollar of ad spend.
No benchmark and no forecast is used. The line comes from your margin, the budget and target are yours, and the dates — Black Friday on Fri 27 Nov 2026, Cyber Monday on Mon 30 Nov 2026 — and the run-up before each come from the ecommerce marketing calendar.
One line set by your margin, one budget, and a calendar. The line is arithmetic; the budget and the target are yours. Nothing on this page predicts what the ads will do.
- MER
- Marketing efficiency ratio: all store revenue in a period set against all ad spend in it. It is the number that survives attribution arguments, because it does not ask any platform which sale it caused. Over Black Friday that matters more than usual, when every platform claims the same shoppers.
- Break-even MER
- The MER at which ad spend has paid for itself out of gross margin and nothing more. It is set entirely by your margin, and it moves faster than the margin does: a 50 percent margin breaks even at 2.00x, a 25 percent margin at 4.00x.
- Gross margin during the sale
- What is left of an order after the cost of goods, fees, shipping you absorb and the discount itself. A store with a 60 percent margin running 25 percent off is not selling at 60 percent during the sale, and the planner needs the sale figure.
- The BFCM window
- From the teaser 30 days before Black Friday to three days after Cyber Monday, on the same run-up the ecommerce marketing calendar lays out for each event. Spend is weighted toward the days nearest each event and lightest on the early teaser days.
- Revenue to break even, per day
- What a single day of the plan has to bring in, store-wide, to cover that day of ad spend. It is the figure to hold each day against once the sale is live: a day that misses it is a day to cut spend, not add to it.
Nudgesmart is available on the Shopify App Store. Browse the template library or see what it costs.
What the sale has to return, at different margins
Illustrative arithmetic in US dollars, not customer data, spread across the full Black Friday Cyber Monday window from the first teaser day to the last tail day, even once part of it has passed. Every row comes from the same function the planner runs.
| Scenario | Margin | Break-even MER | Target MER | Ad spend | Revenue to break even | Black Friday spend | Verdict |
|---|---|---|---|---|---|---|---|
| Apparel, 20,000 budget, profit target | 60% | 1.67x | 3.00x | $20,000.00 | $33,333.33 | $1,179.94 | Target clears break-even |
| Skincare, planning at break-even | 70% | 1.43x | — | $8,000.00 | $11,428.57 | $471.98 | Planned at break-even |
| Electronics reseller, 4x target | 22% | 4.55x | 4.00x | $15,000.00 | $68,181.82 | $884.96 | Target is below break-even |
| Home goods, revenue target of 120,000 | 45% | 2.22x | 3.50x | $34,285.71 | $76,190.48 | $2,022.76 | Target clears break-even |
| Jewellery, target on the line | 50% | 2.00x | 2.00x | $10,000.00 | $20,000.00 | $589.97 | Target sits on break-even |
| Supplements, revenue target at break-even | 65% | 1.54x | — | $32,500.00 | $50,000.00 | $1,917.41 | Planned at break-even |
Where a Black Friday budget plan can mislead
Enter the margin after the discount
Black Friday margins are lower than the rest of the year because the discount comes out of them. Plan on your usual margin and the break-even MER comes out too low, so every day of the plan looks safer than it is.
MER counts revenue the ads did not cause
Returning customers, email and search traffic all spike over BFCM, and MER includes them. Clearing the line store-wide does not prove the ads earned it — compare the same days against a normal week to see how much would have arrived anyway.
The daily split is a starting point
The weighting follows the calendar, not your store. If your own past sales peaked on a different day, move spend toward it and keep the daily break-even figures as the check.
Returns arrive after the window closes
Holiday orders are returned at a higher rate and later than usual. Revenue that clears the line in November can fall below it by January, so a plan with no room above break-even has no room for returns either.
Black Friday ad budget questions
How much should I spend on Black Friday ads?
As much as your margin can carry at the MER you can realistically hold, and no more. Enter your gross margin and a budget and the planner shows the revenue that spend has to bring in to break even — at a 60 percent margin, a 20,000 dollar budget needs 33,333 dollars of store revenue across the window before it has paid for itself.
What is a good MER for Black Friday?
One above your break-even line, by enough to leave a profit after returns. The line depends only on your margin: 1.67x at 60 percent, 2.22x at 45 percent, 4.55x at 22 percent. This page does not quote an average, because the right target for one store loses money for another.
How should I split my budget across Black Friday and Cyber Monday?
The planner starts light 30 days out, builds through the week before, peaks on Black Friday and again on Cyber Monday, and tapers over the three days after. It gives every day its own spend and its own break-even revenue, so you can check each day against the store as it happens.
I have a revenue target, not a budget. Can I plan from that?
Yes. Switch to a revenue target and the planner returns the most ad spend that target can carry at your MER — at break-even if you leave the MER blank. A 120,000 dollar target at 3.5x can carry about 34,286 dollars of ad spend.
What if my target MER is below break-even?
Then hitting the target still loses money on the ads, and the planner says so. The third worked example is the common case: a 4x MER sounds strong, but at a 22 percent margin the line is 4.55x, so the store pays for every sale it buys.
Does this tool need my store or an account?
No. It runs in the page with the figures you type, and nothing about your store is sent anywhere.
The ads bring the shopper. The offer has to be waiting.
Countdowns and notification bars are campaign types in Nudgesmart, and a campaign can be gated on the days left until a holiday, so the sale on the storefront matches the one in the ads.
