Plan your Black Friday ad budget: peak CPA forecasts, break-even ROAS and the daily spend to hold your volume.
Every Black Friday the same thing happens: auction competition floods in, and your cost per acquisition climbs — in 2025, peak-season CPA ran ~34% above normal while ROAS fell ~21%. Sellers who plan for the surge protect their margins; sellers who don't discover it in their P&L in January. This planner turns your current numbers into a peak-season forecast.
Enter your average order value, your contribution margin after costs and fees, and your current CPA and daily budget. Pick your main channel (the tool presets typical surge levels) or set the surge yourself, and you get: your forecasted peak CPA, your maximum affordable CPA (AOV × margin), your break-even ROAS, and the daily budget you'd need to hold today's order volume through the surge.
Creative testing gets expensive when CPA spikes — each test needs 1–3× CPA of spend before it can be judged. Run the Ad Creative Testing Budget calculator in October so your winners are locked in before the surge.
Industry tracking of recent peak seasons: Meta around 35%, Google around 30%, TikTok around 45%. Your category may differ — if you've run a previous Black Friday, use your own numbers.
The most you can pay to acquire a customer without losing money: AOV × your contribution margin %. Above this line, every sale loses money — scale spending up only below it.
First protect: refresh creatives, add bid caps, shift toward retargeting. Then fund the volume you want at the forecasted peak CPA — the planner shows the daily budget needed to hold today's order count.
October. Testing during the peak costs 1–3× the surged CPA per creative to get a read, and auction volatility muddies results.
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