The 6-Step PPC Prep That Turns Prime Big Deal Days Into Your Highest-ROI Event of Q4

Amazon hasn't officially announced the dates for Prime Big Deal Days 2026, but industry patterns and seller communities are converging on October 7-8.

That gives you a matter of weeks.

And if your PPC campaigns are running on the same settings they've been using since summer, this blog post is for you, because Prime Big Deal Days isn't a normal traffic event you can absorb with your everyday campaign structure. It's a compressed, high-intent, high-competition 48-hour window where ad costs spike, shoppers move fast, and the sellers who win are those who showed up prepared.

So if you want to boost your sales this Prime Big Deal Days while you keep your ACoS low, here’s what to do this week.

Step 1: Review Campaign Performance Before Touching Anything

Before adjusting a single bid or shifting a dollar of budget, you need a clear picture of where your account actually stands.

This sounds obvious, but most sellers skip it anyway—they jump straight to increasing bids and budgets, assuming that more spend equals more Prime Day sales. What they're actually doing is amplifying both their wins and their inefficiencies. If a campaign is wasting budget before Prime Big Deal Days, running it with a bigger budget during the event wastes more.

What to pull and review:

Go to Campaign Manager and download performance data for the past 60-90 days. You want enough history to identify patterns.

Review every campaign against these questions:

• What is the ACoS relative to your break-even threshold? Campaigns running above break-even before the event may bleed money during it, when CPCs are 20-40% higher than normal.
• Which campaigns are consistently hitting their daily budget cap? These will run out even faster during Prime Big Deal Days' elevated traffic. They need budget increases, but only if they're profitable.
• Which campaigns are consistently underspending? Budget sitting in low-converting campaigns could be funding your winners.
• Which individual keywords are driving the most profitable sales? 

Step 2: Cut Wasted Spend Before You Increase Any Budget

Most sellers approach major events by adding more budget, more campaigns, and higher bids.

The smarter approach is to subtract first.

Wasted ad spend is any click that costs money without contributing to a sale. It exists in every account. In normal traffic conditions, it's a manageable drag on ACoS, but during Prime Big Deal Days, when CPCs are elevated and every dollar needs to work harder, waste is significantly more expensive.

How to identify and eliminate it:

From your Search Term Report, filter for search terms with:

• 10+ clicks and zero conversions in the past 60 days — these are budget drains
• ACoS over 2x your break-even threshold — these are converting, but at a cost that destroys margin
• Irrelevant searches — terms that have nothing to do with your product but are triggering your broad or automatic campaigns

Add every irrelevant or non-converting term as a negative keyword before the event. Use negative exact for specific phrases you want to block precisely, and negative phrase for any search containing a problematic word (like "cheap," "free," or "DIY" if your product is premium).

Step 3: Allocate Budget Strategically, Not Equally

Your top-performing campaigns deserve significantly more investment than your mid-tier or underperforming ones—especially during an event where peak hours drive the majority of sales.

A practical budget allocation framework:

• Top performers (your 20% of campaigns driving 80% of profitable sales): Increase daily budgets by 50-100%. These campaigns have proven they can convert at profitable ACoS under normal conditions. During Prime Big Deal Days, they'll probably get more traffic, more impressions, and more sales if they have the budget to sustain visibility.
• Mid-tier performers (solid but not exceptional): Increase daily budgets by 20-30%. Enough headroom for the traffic spike, without over-investing.
• Low performers and underperformers: Do not increase budgets. If a campaign can't convert profitably in normal conditions, more budget during a high-CPC event makes it worse. Either pause these campaigns for the duration of the event, or reduce their daily budgets and redirect that spend to your winners.

Step 4: Make Bid Adjustments Based on Data, Not Instinct

Raising bids before a major event is standard advice. The problem is that "raise your bids" without specificity is how sellers overpay for traffic that doesn't convert.

Bid adjustments should be based on data. For example:

Increase bids on:

• Your highest-converting exact match keywords — these are the terms that have proven they drive profitable sales. During Prime Big Deal Days, you want to win top-of-search placements for these terms. Increase by 20-40% depending on current placement and competition.
• Top-of-search placement adjustments — in Campaign Settings, you can set a bid multiplier specifically for top-of-search placements. During Prime Big Deal Days, top-of-search converts significantly better than product pages or rest-of-search. Setting a 50-100% top-of-search multiplier on your best campaigns ensures you capture that premium position.

Keep bids stable or reduce on:

• Broad match campaigns without strong conversion history — broad match in a high-traffic environment casts a wide net that's expensive and often irrelevant. If you must run broad match during the event, pair it with the extensive negative keyword list from Step 2.
• Keywords with historically high spend but low conversion — these will be even more expensive during the event. Reducing bids here redirects budget toward proven converters.

💡 Pro tip: Monitor and adjust daily during the event:

Set a reminder to review campaign performance every few hours during Prime Big Deal Days. If a campaign's ACoS exceeds 2x your break-even by midday, reduce bids immediately—don't wait for end-of-day reporting. Conversely, if a campaign is performing exceptionally well but running close to its budget cap, increase the budget in real time to capture the remaining event traffic.

Step 5: Separate Branded and Non-Branded Campaigns

Branded keywords (your brand name, your product name, your ASIN) convert at dramatically higher rates than non-branded category keywords. They also tend to have significantly lower CPCs because there's less competition for terms that specifically reference your brand.

When these two keyword types share a campaign:

• Budget distributes unevenly between them
• You can't set appropriate bids for each type independently
• Performance reporting is muddied—your high-converting branded keywords inflate the overall campaign metrics, hiding underperformance in non-branded terms

What to do before Prime Big Deal Days:

• Branded campaigns: Create or isolate dedicated campaigns for all branded and product-specific terms. Set budgets based on branded search volume and bid conservatively. During the event, competitors will attempt to run Product Attribute Targeting (PAT) campaigns on your product pages. Strong branded campaigns ensure your ads appear alongside or above these competitor placements.
• Non-branded campaigns: These are your discovery and growth campaigns—targeting category keywords, problem-solution searches, and use-case terms. They need separate budgets and separate bid strategies. Set bids based on your conversion data from Step 1 and ensure these campaigns have enough budget to sustain visibility through the full 48 hours.

Step 6: Prepare Campaigns Specifically for Increased Event Traffic

Create dedicated Sponsored Products campaigns for your deal products—separate from your everyday campaigns. Name them clearly ("Prime Big Deal Days – [Product Name]") so you can track performance distinctly and pause them after the event without affecting your core campaigns.

These event campaigns should:

• Target your top-converting exact match keywords at aggressive bids
• Have dedicated daily budgets that account for the full 48-hour period
• Use fixed bids rather than dynamic bidding for maximum cost predictability during peak competition

Set up Sponsored Brands for event visibility:

Sponsored Brands ads give you premium placement above standard search results—brand logo, custom headline, and multiple products in a single ad unit. During Prime Big Deal Days, shoppers scanning search results will see your Sponsored Brand before they see individual Sponsored Products.

Use these to:

• Feature your deal products prominently with an event-relevant headline
• Link to a curated Store page showcasing all your Prime Big Deal Days offers
• Target your top category keywords at the campaign level

💡 Pro tip: Activate Sponsored Display for retargeting:

Not every shopper who sees your product during Prime Big Deal Days will buy immediately. Some will view your listing, compare alternatives, and circle back later. Sponsored Display retargeting campaigns keep your product visible to these warm prospects as they continue browsing—both on and off Amazon.

Set up a Sponsored Display campaign targeting product page viewers with a 30-day lookback window before the event. These campaigns often have the lowest CPC and highest conversion rate in the entire account—because the audience has already expressed intent.

Not Sure Where Your Account Stands? Get a Free PPC Audit Before the Event!

Everything in this guide requires one thing first: a data-driven view of where your account actually stands today.

That means knowing which campaigns are profitable, which are bleeding budget, which keywords deserve more investment, and which are costing you money with nothing to show for it.

This is exactly how our free PPC audit can help you before Prime Big Deal Days.

Our audit covers:

✅ Which search terms are draining your budget without converting

✅ Where your spend is concentrated vs. where it should be for maximum Prime Big Deal Days ROI

✅ Which keywords are undervalued, which are overbid, and where placement adjustments can improve results

✅ Campaign structure assessment 

✅ Custom PPC strategy — a prioritized list of exactly what to change before October 7th, in order of impact

👉 Claim your free PPC audit before Prime Big Deal Days!