Black Friday and the holidays: how to boost sales without losing margin

Black Friday, Cyber Monday and the holidays are the most important weeks of the year for most stores. Sales go up – but ad costs often rise even faster.

The result? Record turnover and disappointing profit. This guide will help you get through the season so that at the end of December, margin is what counts – not just the revenue chart.

Why does Q4 burn through budget so easily?

• cost per click rises because more sellers are bidding,
• promotions reduce the margin on every order,
• daily budgets run out before peak shopping hours,
• post-holiday returns eat into the result.

Each of these factors is manageable on its own. Together, they can turn a campaign with a good ROAS into a loss.

Set your profitability threshold before launch.

Before you raise budgets, calculate at what ROAS advertising stops paying off – separately for promotions and for regular prices.

In Q4, the most expensive thing isn't the cost per click – it's sales that leave no margin.

Choose products that really make money.

Not every bestseller is a good candidate for promotion. Choose products that:

• have margin to spare after the discount,
• are available in sufficient quantities,
• have a price or quality advantage over competitors,
• don’t generate a high number of returns.

Low-margin products can stay in your catalog – but not necessarily in paid campaigns.

Budget and schedule for peak season.

1. Spread your budget over time – warm-up 2 weeks before Black Friday, peak over the promo weekend, then a calmer December.
2. Check shopping hours – in season, the peak often shifts to the evening; your schedule should keep up with it.
3. Don’t let your budget run out before noon – on the most important days, this is the most common cause of lost sales.
4. Turn off campaigns that fall below the threshold – even if they generate revenue.

Track competitor prices daily.

In November, prices change up to several times a day. If a competitor lowers their price, your ad may still be shown – but no longer sell.

Worth monitoring:

• prices and availability at main competitors,
• the moment a competitor runs out of stock,
• your offer’s position against the market.

Sometimes the best move isn’t a price cut – it’s a price increase the moment competitors sell out.

A week-by-week plan.

• Until mid-November – profitability thresholds, product selection, creative testing.
• A week before Black Friday – campaign warm-up, stock and price control.
• Black Friday – Cyber Monday – daily review of budgets and ROAS, quick reactions.
• December – focus on products that deliver before the holidays.
• After the holidays – analysis of profit after returns and lessons for next year.

In peak season, Senvio watches your profitability threshold for you: it monitors campaigns, competitor prices and budgets 24/7, and when something needs a decision, it sends a ready-made recommendation.