When should I start q4 ads?

The expensive part of the fourth quarter is not the discount, it is the auction. Everybody bids at once for the same weeks, so the cost of reaching a new person rises exactly when you most want to reach them.

That argues for starting the top of the funnel early. Through early autumn, run the campaigns whose job is to introduce the brand and collect people: video, content, gift guides, product demonstrations. Judge them on audience built and cost per new visitor rather than on immediate return, and expect them to look unimpressive against a retargeting campaign.

Then the sale week becomes a harvest. You are messaging people who already know you, through email, text and audiences built from your own site, which costs a fraction of finding them in December.

List growth is the highest value activity in this period. Every subscriber added in October can be messaged as often as you like in November at almost no cost. Run signup offers, a sale waitlist and back in stock alerts, and make the promise specific: subscribers hear first and get access earlier.

Creative production belongs here too. Shoot the assets in early autumn, in every format you need, so the busy weeks are spent managing rather than producing.

And keep some prospecting running through the peak, because a store that only retargets during the fourth quarter enters January with no new customers and starts the year buying them at full price.

The end of the season is fixed by logistics, not by demand. So build the schedule from the last date you can deliver in time, then work back.

Get the cut off dates from every carrier and service you use, for each destination, and publish them on the site. Then set the last day you will promote each delivery method, and plan what the ads say after that date, because advertising delivery before a holiday once it is impossible produces refunds and complaints.

Working backwards typically gives you several phases. A warm up period where the job is audience and content. A first promotional wave around the main sale weekend. A gap where the message returns to gifting rather than discount. A final push tied to the shipping deadline, where urgency is genuine because the date is real. Then a late window where the honest offer is digital gift cards and collection in store if you have it.

After the holiday there is a second season that many stores ignore: people spending gift money and returning gifts. Budget for the days immediately after, because the auction cools and buyers with credit are looking.

Plan January before December ends, since the audiences you built are still warm and the media is cheaper.

And set budgets per phase rather than per month. A monthly budget spread evenly across the peak underspends the days that matter and overspends the quiet ones.

The most common reason a fourth quarter plan fails is not the strategy, it is that something was not approved in time.

Product review queues are busier in this period, and any change to prices, titles, images or promotional content can put items back into review. So submit feed changes and sale pricing early, and check the account for existing disapprovals now rather than the day before a launch. A category that requires extra certification needs even more lead time.

New accounts and new payment methods need a run in. An ad account with no history, or one that has been dormant, is more likely to be reviewed and less likely to perform immediately. If a new channel is part of the plan, it should be live and spending before the peak rather than starting in it.

Tracking needs to be verified before the volume arrives, not diagnosed during it. Confirm the purchase event on every payment route, check the values, and make sure any new promotional page is measured.

Creative should be through review too, especially anything featuring people, claims, or restricted categories.

Then build a change freeze into the calendar. Site changes, app installs and account restructures stop before the peak. Bidding strategies should have been changed weeks earlier so they have settled, because automated bidding needs time and the peak is the worst moment to reset it.

Finally, write the escalation plan: who is watching, what the thresholds are, and who can pause spend at midnight if something breaks.

Costs per click and per thousand impressions rise through the peak. That is not a campaign failure and it should not trigger a panic reaction.

Expect reported return to fall while total profit rises, because you are buying more expensive attention and converting more of it. Judge the period on total contribution rather than on the return figure alone, and compare with the same weeks last year rather than with October.

Raise budgets before the peak rather than during it, in steps, so automated systems have data to work with. A large increase on the day usually produces a period of poor delivery at the worst moment.

Protect the conversion rate rather than chasing more traffic. During the peak, the cheapest improvement available is usually on the site: stock accuracy, delivery dates on the product page, checkout speed and a clear returns policy. Every point of conversion applies to traffic you are already paying a premium for.

Watch stock closely and pull products from campaigns when they run out, because paying peak prices for clicks to a sold out page is the most expensive mistake available in December.

Move budget between phases based on what is happening rather than sticking to a plan written in September. If the first wave overperforms, fund the second. If a product sells out, move its budget rather than letting it sit.

And hold something back for the days after the holiday, when competition falls away and the people who received gift money are still shopping.