Black Friday Ecommerce Advertising: A Google Ads Prep Plan

Most stores treat Black Friday as a week-long event. The ad accounts that handle it well treat it as a project that starts weeks earlier. Budgets, bid targets, product data, promotions and tracking all have lead times, and several of them cannot be fixed in the middle of the sale.

This guide gives you a practical Black Friday ecommerce advertising plan (often called a BFCM plan) for Google Ads and Merchant Center. It covers the 2026 dates, how to set a bid target that still makes money at sale margins, how to prepare your feed and promotions, and what to check every day from Black Friday through Cyber Monday.

Quick Summary

Black Friday ecommerce advertising works best when the decisions are made early and checked daily. In 2026, Black Friday is November 27 and Cyber Monday is November 30. Google's own holiday guidance points to reviewing budgets and ROAS targets four to six weeks before the peak, which means mid to late October. Recalculate your break-even ROAS at discounted margins, load sale prices and promotions into Merchant Center ahead of time, and keep tracking and shipping settings clean so nothing breaks when traffic spikes.

• Start now: the planning window for a November 27 peak runs from about October 16 to October 30.
• Protect margin: a discount raises your break-even ROAS, so set bid targets from sale margins, not full-price margins.
• Prepare the feed: use sale_price with a timezone-aware effective date, and make sure the page shows the same price in its HTML.
• Submit promotions early: Merchant Center asks for at least 24 hours before the start, and review typically takes 12 to 24 hours.
• Use seasonality adjustments sparingly: they are meant for short events of one to seven days, and only when you expect a big conversion rate shift.
• Watch daily: check budget limits, disapprovals and tracking every day of the event.

When Should You Start Preparing for Black Friday and Cyber Monday Ads?

Start four to six weeks before Black Friday. Google's guidance on optimizing for the holiday season recommends adjusting budgets and ROAS targets four to six weeks before peak season. For a November 27 Black Friday, that window opens around October 16 and closes around October 30.

Early preparation also gives Google's bidding systems time to learn. Changes made in the final days can hurt more than they help, because the account has no time to settle before traffic arrives.

What Are the 2026 Black Friday and Cyber Monday Dates?

Thanksgiving in the United States falls on the fourth Thursday of November, which is November 26 in 2026. That places Black Friday on Friday, November 27 and Cyber Monday on Monday, November 30. Use the table below to anchor your calendar.

Does Holiday Shopping Only Happen on Black Friday and Cyber Monday?

No, and your plan should reflect that. Google's holiday guidance cites Mastercard Spending Pulse data showing that eight December days in 2023 had higher spend than Cyber Monday. It also cites Google and Ipsos research that 34% of shoppers had started holiday shopping by July 2024, up from 27% the year before.

The practical takeaway is that Black Friday and Cyber Monday are peaks inside a longer season. Plan budgets and creative for the full run from late October to the end of December, with the sale days as the highest points.

How Do You Set a ROAS Target That Still Makes Money During a Sale?

Recalculate break-even ROAS using your discounted margin, then set your target above it. Break-even ROAS equals 1 divided by contribution margin. When you discount a product, revenue per unit falls while most costs stay the same, so the margin shrinks and the break-even rises.

If you have not worked out your base figure yet, start with our guide to calculating break-even ROAS, then come back to this section.

How Does a Discount Change Your Break-Even ROAS?

The table uses an index instead of currency to keep the arithmetic clear. Assume a product sells at an index of 100 with variable costs of 60 (product, shipping, fees). At full price the contribution margin is 40%, so break-even ROAS is 2.5.

This simple model keeps costs flat. Real costs such as payment fees scale with revenue, and returns can change during the holidays, so rebuild the table with your own numbers for each product tier. Our guide to what a good ROAS is for ecommerce explains how to turn the result into a working target.

Should You Lower Your Target ROAS for Black Friday?

Only down to your sale-margin break-even, and no lower. Google's guidance for Smart Bidding with Shopping and Performance Max says lowering the Target ROAS below your usual level can help capture more sales during the holidays. That advice is sound for volume, but it does not know your margins.

If your normal target sits comfortably above break-even, you may have room to lower it. If your discount pushes break-even close to your target, lowering it further buys revenue at a loss.

Google also gives specific guidance on how to change targets:

• Change gradually: adjust ROAS targets in steps of about 30%, with one to two conversion cycles between changes.
• Time the last change: make target changes a few days before the promotion starts.
• Use a different strategy when budget is fixed: if you must stay within a set budget and maximize sales, consider Maximize conversion value instead of Target ROAS.
• Start near your current level: begin Target ROAS close to your current ROAS, then adjust once performance reaches the initial target.

How Should You Set Budgets for Black Friday Week?

Set daily budgets high enough that campaigns are not capped on the busiest days. Google's Smart Bidding guidance suggests setting daily budgets at roughly three times your expected spend before key promotion days such as Black Friday and Cyber Week. If you have no prior-year data to benchmark against, it suggests about two times your target spend. It also says to check budgets regularly during Black Friday and Cyber Monday to confirm they are not limiting performance.

A higher budget ceiling is not a spending plan. It simply removes the cap so the bidding strategy can follow demand. Your ROAS target, not the budget, controls how aggressively the account spends.

How Much Can a Campaign Spend Above Its Daily Budget?

A campaign can spend up to twice its average daily budget on a single day, and monthly spend is capped at 30.4 times the average daily budget. According to Google's page on overdelivery and your average daily budget, served cost can sometimes exceed these limits, but you are never billed more than your spending limits. You can check the Billed cost report in the report editor to see any overdelivery.

That 2x flexibility is useful on peak days, but it also means a very busy day can use more than the number shown in the budget field. Plan your cash and monthly caps with that in mind.

Should You Use the New Customer Acquisition Goal?

It is worth testing if the sale is meant to bring in first-time buyers. Google's holiday guidance suggests using the new customer acquisition goal in Performance Max and Search campaigns. Treat it as an option for acquisition-focused offers, and keep a separate view of returning customer revenue so you can judge each group by its own margin.

Should You Use Seasonality Adjustments for Black Friday?

Use them only for a short, high-impact sale where you expect a large change in conversion rate. Google describes seasonality adjustments as an advanced tool that tells Smart Bidding about expected conversion rate changes from events like promotions or sales. They are not meant for routine seasonal patterns, because Smart Bidding already manages those.

How Long Should a Seasonality Adjustment Run?

One to seven days is the ideal range. Google says adjustments may not work as well for periods longer than 14 days at a time. That makes them a good fit for a Black Friday to Cyber Monday window and a poor fit for a month-long holiday promotion.

The steps are in Google's guide to creating a seasonality adjustment. Its example is a three-day sale with the conversion rate adjusted up by as much as 50%. Use your own prior sale data to estimate the change, and verify the details before saving, since the adjustment can change how bid strategies perform.

How Do You Get Your Product Feed Ready for Black Friday?

Audit the feed for price, sale price, availability and shipping before the sale, then keep updating it during the event. A feed that is accurate in October can be wrong by Black Friday if prices, stock or shipping times have changed. Our guides to Google Shopping feed optimization and what Google Merchant Center is cover the fundamentals.

How Do You Set Sale Prices in Merchant Center?

Submit the full price in the price attribute and the discounted price in sale_price. Google's sale price specification sets these rules:

• Lower than price: the sale price must be lower than the regular price, and the difference must appear in the product data.
• Matches the website: it must match the sale price shown on the landing page and at checkout.
• Both prices visible: the landing page should clearly show both the non-sale and sale prices, and only the sale price should appear at checkout.
• Coupons must be public: if you advertise a coupon code, it must be available to all users, and the sale price must stay consistent through checkout.
• Promo codes belong in promotions: if a discount needs a code, manage it as a promotion instead of a product-level sale attribute.

Pair sale_price with sale_price_effective_date to control when the sale starts and ends. Google's effective date specification asks for an ISO 8601 date range with start and end dates, each including time and timezone. Without a timezone, Google defaults to UTC. Without times, the sale starts at 12 AM on the start date and ends at 11:59 PM on the end date.

For a store on US Eastern time, a sale from the start of Black Friday to the end of Cyber Monday would be written as 2026-11-27T00:00-0500/2026-11-30T23:59-0500. Daylight saving time ends on November 1, 2026, so the Eastern offset on those dates is minus five hours.

Which Products Qualify for Sale Price Annotations?

Google's page on sale price annotations adds a few conditions. The discount must be above 5% and below 90%. In the United States, Shopping ads also need the base price to have been charged throughout either 5 days within the past 30, or 15 days within the past 200, whichever is met first. Meeting the requirements does not guarantee display, because Google shows the best-performing annotations.

The simple rule is to keep your base price stable and honest in the weeks before the sale. You can check which products show a sale badge in Merchant Center under Products, then All products, using the "Has sale badge" filter.

Why Do Sale Prices Cause Mismatched Price Disapprovals?

They happen when the price in your feed does not match the price Googlebot sees on the product page. Google's help page on mismatched product price explains that Googlebot reads the HTML your server returns, so prices added by JavaScript after the page loads can trigger errors. It also lists wrong sale start or end dates and timezone mistakes as common causes.

The consequences matter during a sale. Disapproved products do not appear in Shopping ads or free listings, and repeated mismatches may lead to account suspension. After a fix, Google may take up to 12 hours to review your website. If a suspension ever becomes a concern, see our guide to Google Merchant Center suspension.

Can Automatic Item Updates Handle Black Friday Price Changes?

Do not rely on them for fast-moving sale prices. Google's page on automatic item updates says automations may not work for products whose price or availability changes more than once per day, and affected products may be disapproved instead of updated. It also says automations are not a substitute for regular product data updates. For frequent changes, Google recommends the Merchant API.

Which Shipping Settings Matter During the Holidays?

Cutoff time, handling time and transit time. Google's guide to estimated delivery time explains that delivery estimates can appear as an annotation in free listings and Shopping ads, built from those three settings. Only business days count, and if handling or transit overlaps a listed holiday in the destination country, Google adds one day.

If you do not set a cutoff time, Google defaults to 8 AM Pacific, according to its page on handling cutoff time. Customers who miss the cutoff see an extra business day added to the estimate. Review these settings before the sale so your estimates reflect how your warehouse actually works during a busy week.

Google also points merchants to the Store Quality scorecard in Merchant Center, which compares your delivery, shipping costs, returns and seller rating with your category. Check it before the sale so you know where you stand before traffic arrives.

How Do You Add Promotions to Google Shopping Ads?

Add the Promotions feature in Merchant Center, then create each offer with the promotion builder, a promotions data source or the Merchant API. Google's guide to getting started with promotions says promotions are an optional add-on for Shopping ads, local inventory ads and free listings, and that shoppers see a "special offer" link. In the United States, eligible promotions can also appear on a Search deals page.

How Early Should You Submit a Promotion?

At least 24 hours before the scheduled start. Every promotion goes through policy and product review, and review typically takes 12 to 24 hours from the promotion's effective start time. Submitting on Thanksgiving morning for a midnight start is too late.

Which Promotion Types Does Google Allow?

Google allows percentage or amount discounts, tiered discounts, buy-one-get-one offers, free gifts and free shipping, with conditions. Some offers are not allowed, and these are the ones that most often cause trouble:

• Vague ranges: offers such as "up to y% off" without a stated floor.
• Restricted audiences: offers limited to subsets of shoppers, such as military or birthday discounts.
• Shipping discounts without a code: unless combined with another permitted promotion.
• Discounts already shown on the landing page: Google lists these as not allowed, and says plain sale prices belong in the sale_price attribute, not in promotions.
• Long duration: promotions must expire within six months of the start date.

Common disapproval causes include mismatched promotion IDs, checkout or code problems, applicability errors such as saying "storewide" when only some products qualify, and picking the wrong incentive type. Double-check each promotion against the exact discount in your checkout.

What Are Promotion Assets in Google Ads?

They are Google Ads assets that highlight sales and offers in your ads. Google's guide to promotion assets says they appear with Search Network text ads, Performance Max Shorts and in-stream video ads. Each asset can show an optional occasion label and up to two lines of promotion text.

• Occasions: the list includes seasonal options with fixed date ranges such as Black Friday and Christmas.
• Six-month rule: occasion-specific assets must be created or edited within six months of their start date to serve, and unedited assets stop serving after six months.
• Precedence: the most specific level wins, with ad group over campaign and campaign over account.
• Scheduling: you can use the occasion dates, custom dates, or limit eligibility to certain days and hours.

Use promotion assets alongside Merchant Center promotions, not as a substitute. They serve different places and different shoppers.

How Should You Structure Performance Max and Shopping Campaigns for the Sale?

Launch new campaigns well before the sale, and avoid structural changes during the event. Google's Smart Bidding guidance says new Performance Max campaigns may have a learning period, that you should avoid budget or target changes during ramp-up, and that Performance Max should run for at least six weeks before you evaluate it. It also recommends allowing one to two weeks of ramp-up after the start date and excluding that period from any test analysis.

That has a clear consequence. A new Performance Max campaign launched in the week of Black Friday will not give you a fair read, and it may still be learning when the sale ends. If you want a new campaign in the mix, start it in October. Our guide to Performance Max for ecommerce explains the structure, and our guide to Google Shopping campaign priority shows how to control which campaign wins the auction when several carry the same products.

Should You Separate Sale Products From Full-Price Products?

Yes, whenever the margins are different. A product at a deep discount has a much higher break-even ROAS than a product at full price. If both sit in one campaign under one target, the target will either starve the discounted items or overspend on them. Use custom labels in your feed to mark sale tiers, then build separate groups so each has its own target. Our overview of Google Shopping ads management covers campaign structure in more detail.

How Do You Protect Conversion Tracking During the Busiest Days?

Test checkout and your conversion tags before the sale, and know how to use data exclusions if tracking breaks. Smart Bidding learns from conversion data, so bad data produces bad bidding. Google's page on data exclusions explains that the tool tells Smart Bidding about a conversion data problem so it can reduce the impact.

When Should You Use a Data Exclusion?

Use one for real tracking problems, such as a removed tag, a website outage or a failed conversion import, and for known future problems like planned site maintenance. Google lists these facts about how they work:

• Click-based: exclusions work on clicks, and conversions attributed to excluded clicks are also excluded.
• Cover the conversion delay: set a date range that includes your typical conversion delay.
• Reporting still shows the data: exclusions only change what Smart Bidding uses.
• Apply them quickly, but not often: using them frequently or for long periods can hurt Smart Bidding.
• Do not remove them afterward: removing an applied exclusion can cause more issues.
• Time limits: Google's Smart Bidding guidance says to use them only if you catch the issue within a week, and not for issues older than 14 days for Search and Display or 60 days for Shopping.

After an exclusion, bids and spend may drop temporarily. Readjust targets and budgets so you do not overspend when bids recover.

What Should You Test Before the Sale Starts?

Run a test purchase on desktop and mobile, with the discount code or sale price active, and confirm the purchase shows up in Google Ads and in your analytics. If you run a Shopify store, check that the order value and currency pass correctly. For a broader monitoring routine, see our guide on how to monitor PPC campaigns.

What Should You Check on Your Website Before Traffic Arrives?

Check that every ad lands on a page that matches the offer, shows the right price and has stock. This is basic, but it is where many sale-day losses happen. A shopper who clicks a Black Friday ad and lands on a page with a different price or an out-of-stock product usually leaves, and the click is wasted.

• Offer match: the discount in the ad, the feed and the landing page should all agree.
• Visible sale price: show both the regular and sale price on the page if you use sale_price.
• Stock accuracy: keep availability in the feed in sync with inventory, since out-of-stock items waste budget.
• Checkout path: test the full path with the discount applied, on mobile first.
• Shipping and returns pages: make delivery dates and return terms easy to find, and keep them consistent with Merchant Center.
• Prices in HTML: make sure the price Googlebot sees in the page source matches your feed.

What Does a Black Friday Ads Timeline Look Like?

A workable timeline runs from six weeks before Black Friday to a week after Cyber Monday. The dates below assume Black Friday on November 27, 2026.

How Do You Monitor Campaigns During Black Friday Week?

Check the same short list every morning and again at midday on Black Friday and Cyber Monday. The goal is to catch limits, disapprovals and tracking problems while there is still time to act.

1. Look at budget status in each campaign and confirm that none is limited by budget on high-margin products.
2. Open Merchant Center diagnostics and check for new disapprovals, especially price mismatch and availability issues.
3. Compare conversions and revenue in Google Ads with your store orders for the same hours.
4. Check that promotions show as approved and active.
5. Look at ROAS by product tier against the break-even you calculated for that tier.
6. Note any changes you make, with the time, so you can read the results later.

What Should You Do After Cyber Monday?

Reset the account instead of leaving sale settings in place. Google's Smart Bidding guidance says to reassess ROAS targets against post-holiday expectations and to remove assets and Merchant Center promotions that are no longer relevant. Add these steps to your reset:

• Remove expired sale data: clear sale_price values and effective dates that no longer apply.
• Review targets: return to normal-margin break-even targets for full-price products.
• Keep the seasonality adjustment record: note the dates and estimated change so next year's estimate starts from real data.
• Pause or replace stale creative: end any ad text that still mentions the event.
• Review December: since peak days continue into December, plan the next offer before the sale ends.

What Common Black Friday Advertising Mistakes Should You Avoid?

Most of these problems come from timing and data quality, not from the ads themselves.

• Setting a ROAS target from full-price margins while running deep discounts.
• Launching a new Performance Max campaign a few days before the sale.
• Leaving sale_price without a timezone, so the sale starts or ends at the wrong hour.
• Showing a different price on the page than in the feed.
• Submitting promotions on the day they should start.
• Using a seasonality adjustment for a month-long sale.
• Changing budgets and targets repeatedly in the middle of the event.
• Forgetting to remove sale data and assets after the event.

Where Should You Start With Black Friday Ecommerce Advertising?

Start with your numbers. Work out break-even ROAS at each discount depth, then review your budgets and targets inside the October 16 to October 30 window. Fix feed and shipping data next, schedule promotions at least a day ahead, and keep the daily checklist ready for November 27 to 30.

If you want help planning the season, Seller Splash runs Google Ads, Shopping and Performance Max as part of its ecommerce marketing services. You can review the agency's case studies or book a free strategy call to talk through your catalog and goals. If you are planning a launch around the same dates, our ecommerce product launch strategy guide covers pre-launch timing.

About the Author

Seller Splash is an ecommerce marketing agency based in New York, working with product brands on paid ads, SEO and answer engine optimization. The agency was founded by Shlomie Spielman, an ecommerce operator with experience managing ad spend across Google, Meta, TikTok and Walmart. Learn more on the About page or see the agency's case studies.

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