5 November 2025
Amazon’s New Budget Rules Explained (2025 Update)
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Figuring out how much to spend on Amazon ads can feel a lot like trying to navigate with Apple Maps in 2012 – you think you’re headed the right way, and suddenly you’re in a lake.
If you’ve been selling on Amazon (explore more about Amazon advertising cost) for any length of time, you already know ads can be a total game-changer. The right campaigns can skyrocket your visibility, drive consistent sales, and build real brand momentum. But the wrong ones will torch your budget before you even notice what’s happening.
Here’s the catch: most sellers fall into one of two traps. Either they overspend (and end up wondering where all the profit went), or they underinvest (and wonder why their growth has flatlined). Neither is a great time.
Whether you’re already pulling six figures or you’re eyeing seven, this guide will help you budget smarter, not just harder. We’ll break down how to base your ad spend on real profit (because revenue alone doesn’t pay the bills), what numbers actually matter, where your money does the most work, and how to avoid the all-too-common trap of pouring cash into campaigns that just don’t deliver.
By the time you’re done reading, you won’t be guessing anymore – you’ll have a solid, no-fluff budget game plan that helps you grow without gutting your margins.
No recycled advice. Just seller-tested strategies you can actually use.
Article Contents

The truth is that revenue sounds good, but it doesn’t pay the bills. It’s easy to get hyped about hitting @50K in monthly sales, but if you’ve got thin margins or bloated ad costs, your blank account might be telling a very different story.
That’s why your ad budget should be based on profit, not revenue. Because what’s the point of “growing” if your margins are getting wiped out?
Here’s a simple way to look at it:
Let’s say you’re pulling in $50K in sales each month and your profit margin is around 30%. Cool, then you’ve got $15K left after all your costs. But here’s where people mess up: they start throwing money at ads without thinking about what they can afford to spend without slicing into that $15K like a hot knife through butter.
A good rule of thumb: Pick an ACoS target that still leaves you profitable. For example, if you’re aiming for a 20% ACoS, you’d be setting aside around $10K for ads. That still leaves you with $5K in profit, which keeps the lights on and the business growing.
But (and this is important) you can’t just pull that 30% margin out of thin air. You need to know exactly what’s eating into your revenue. We’re talking COGS, Amazon fees, packaging, shipping, returns, maybe even storage. Get all that down before you start locking in your budget.

ACoS (Advertising Cost of Sales)
Formula: Ad Spend ÷ Ad Revenue
TACoS (Total Advertising Cost of Sales)
Formula: Ad Spend ÷ Total Revenue
Curious about benchmarks? Here’s a deeper look at what is a good TACoS on Amazon.
ROAS (Return on Ad Spend)
Formula: Ad Revenue ÷ Ad Spend
Here’s how to think about it in real life:
If you’re rolling out a brand-new product, TACoS is your best friend. It tells you whether your ads are lifting overall sales, not just bringing in paid clicks.
But if you’re simply updating your existing campaigns, shift your focus to ACoS. It zooms in on your ad performance specifically and helps you spot where money’s being wasted versus where it’s pulling its weight.
Not every Amazon ad does the same job, so spreading your budget evenly across all types won’t do it. Some ads are built to drive fast sales. Others are more about building visibility and staying top of mind.
Remember, these are only ballpark estimates. If you’re introducing something new, you may do more of Sponsored Products. If you’ve already done well and want to build your brand, you may do more Sponsored Brands or Display. The important thing is tweaking based on where you are and what your product really requires.

Your Amazon ad budget shouldn’t look the same in every situation. Here’s how to adjust based on where you are:
New Sellers
Goal: Visibility and first sales
Focus: Heavy on Sponsored Products. Start with high-intent keywords.
Why: You need traction, not brand awareness (yet).
Established Brands
Goal: Protect position and grow share
Focus: Balanced split across all ad types.
Why: You’re optimizing and expanding now, not just converting.
Competitive Niches
Goal: Stay visible in a crowded space
Focus: Lean hard on Sponsored Products with aggressive bids.
Why: High CPCs demand a tighter, performance-driven strategy.
Low-Competition Categories
Goal: Build presence and brand equity
Focus: More flexibility for Sponsored Brands and Display.
Why: Lower CPCs mean you can grow brand awareness early.

Once your campaigns are running smoothly and getting decent returns, it’s time to scale. But here’s the thing: more spending doesn’t always mean more sales; at least not right away.
It’s best to increase your budget slowly. About 10-20% at a time, then watch what happens. If your sales increase along with your spending, great —you’re on the right path. If they don’t, you may need to change your strategy before spending more.
Here are a few signs it might be time to bump things up:
But if your numbers are slipping (like TACoSc creeping up or sales flatlining), it’s time to pause, not push.

Overspending isn’t just a rookie mistake. Believe it or not, even seasoned sellers do it, especially when they haven’t checked in on their campaign in a while.
Here are some red flags to watch for:
If that sounds familiar, don’t panic. A few small changes can actually fix things fast:
Amazon PPC Tools like Amazon Brand Analytics or Helium10 can help you spot weak spots quickly. A quick audit every couple of weeks goes a long way.

Prime Day, Q4, and the rest of the major shopping events are goldmines, but also budget traps if you’re not ready. CPCs go up, competition gets wild, and it’s easy to overspend fast.
Here’s how to prep without the panic:
If you’re wondering what the “big guys” are putting into ads, here’s a quick peek:
But here’s the thing: it’s not just about spending more. It’s about spending smarter. The sellers who scale the best aren’t always the ones with the biggest budgets – they’re the ones who know where every dollar is going and why.
How you spend your Amazon ad budget should depend on where your business is right now, not just what everyone else is doing. A new seller launching their product has very different priorities than a brand that’s already pulling in steady sales. The same goes for your category and how cutthroat the competition is.
So instead of a copy-paste approach, here are a few common seller situations and how you might want to split your budget based on what makes sense:
New Sellers
Suggested split:
Launching a New Product
Suggested split:
Promoting an Established Product
Suggested split:
Small Budget
Suggested split:
Large Budget
Suggested split:
Competitive Category
Suggested split:
Low-Competition Category
Suggested split:
Competitors Are Active
Suggested split:
Minimal Competition
Suggested split:
You don’t need to be new to Amazon to fall into these traps. Even experienced sellers make these mistakes.”
Don’t follow the “just spend 10-15% of revenue” rule blindly. Margins vary. A slim-margin product can’t support that kind of spend.
Fix: Budget based on net profit and target ACoS, not top-line sales.
Campaigns change fast. What worked last month might be burning a budget today.
Fix: Audit every 1-2 weeks. Adjust bids. Check placements. Pause underperforming keywords.
A campaign with a high ACoS could still be profitable if it’s helping drive organic sales. And one with low ACoS could be cannibalizing your rank.
Fix: Track TACoS to understand the full impact.
Don’t scale what’s not working. That just amplifies waste.
Fix: Clean up your listings. Improve targeting. Get your current campaigns performing before adding more budget.
Let’s Take a Look at Your Ad Account
Avoiding common ad budget mistakes is a great first step, but keeping your Amazon campaigns truly optimized day in and day out is a whole different challenge.
That’s where we come in. At SellerMetrics, we dig into your ad account, find what’s working (and what’s not), and help you stop wasting money on campaigns that are not even working. Our goal is simple: make your ad spend work harder and bring in better results.
If you want a second pair of expert eyes on your account..
Book a free audit today or reach out to our team – we’re here to help!
At the end of the day, there’s no magic number – but your ad budget should make sense for your margins, goals, and where you are in the business. It’s not about spending more, it’s about spending smart.
Top Amazon sellers don’t just set a budget and forget about it. They track ACoS, TACoS, and profit per product. They adjust. They test. They spend where it counts, and pull back where it doesn’t.
If you want to scale without burning cash, the answer isn’t “bigger budget.” It’s a better strategy.
Not sure what your ideal ad budget should be? We can help. Let’s review your campaigns and get your spend working harder (not just harder to track). Reach out and let’s make your ads smarter.
Most new sellers start somewhere between $500 and $2,000 per month. That’s usually enough to collect useful data, test keywords, and start figuring out what’s working. Keep a close eye on performance and tweak as you go.
On average, they put 10% to 20% of their monthly revenue toward ads. But it’s not a hard rule 0 some spend more, some less. It really depends on your margins, goals, and how competitive your niche is.
If your ACoS is higher than your profit margins, or if your TACoS keeps creeping up while your organic sales stay flat, that’s a red flag. Campaign audits (even quick ones) can help catch waste before it drains your budget. Learn more: What is a good ACoS on Amazon
Expect higher traffic and higher CPCs. Most sellers boost their daily ad budgets by 2x to 5x during Prime Day. The key is to prepare early, look at last year’s data, and don’t spend blindly.
ACoS looks at ad spend vs ad sales only. TACoS takes your total sales into account, including organic. TACoS is the better big-picture metric if you want to see how your ads are impacting the whole business.
Not always. If your ads are still profitable, they can help you defend your spot, boost brand visibility, and keep sales moving. Pausing too soon might open the door for competitors.
Give it at least 2-4 weeks before making any major changes. Amazon ads need time to settle and gather meaningful data. Tinkering too early can throw things off.
Nope. More spending won’t fix bad targeting, weak listings, or an uncompetitive offer. Make sure the foundation is solid before scaling up.
Do the math: If your ad-driven sales leave room for solid profit after all costs (Amazon fees, shipping, product, etc_, you’re in good shape. Keep an eye on ACoS and TACoS to stay on track.
Absolutely. Tools like Helium10, Jungle Scout, and Sellics can show you what’s working, flag issues early, and help you adjust budgets based on real data.