7 Signs Your Amazon Ads Are Wasting Money (and How to Fix Each)
Seven signs your Amazon Sponsored Products spend is leaking, from ACoS above break-even to ads on out-of-stock ASINs, with a fix for each from Amazon Ads.
The most common signs that Amazon ads are wasting money are: ACoS above your break-even point, no negative keywords added recently, search terms that convert but were never moved into exact match, broad and automatic campaigns that spend without their own caps, budgets that run out before the day's best hours, ads on ASINs that can't sell because they're low on stock, suppressed or not showing the featured offer, and heavy spend on your own brand name where you already rank. Each has a fix inside Amazon Ads: compare ACoS with your profit margin, add negative exact or phrase keywords after a term has had about 20 clicks, harvest the search term report, give discovery campaigns smaller budgets and bids, use budget and schedule bid rules, keep ads on in-stock featured-offer ASINs, and test lower branded bids. XENA's free ad-waste calculator estimates how much each leak may be costing you.
- Amazon Ads says your ACoS needs to stay below your profit margin to make money, so work out break-even ACoS for each product before judging any campaign.
- Amazon Ads recommends judging a keyword for negative targeting after at least 20 clicks, and giving new negatives two weeks or more before changing course.
- Search terms that convert should move into exact match with their own bids, and low-converting terms should get lower bids, per Amazon's Sponsored Products guide.
- Broad terms can bring clicks from shoppers less likely to buy, so discovery campaigns need their own, smaller budgets and bids.
- Out-of-stock products are paused automatically, but low-stock, suppressed and no-featured-offer ASINs can still soak up spend before that happens.
On this page
- 1. Your ACoS is above your break-even point
- 2. You haven't added a negative keyword in weeks
- 3. Your winning search terms are still buried in auto and broad campaigns
- 4. Broad and automatic campaigns spend without a cap
- 5. Campaigns run out of budget before your best hours
- 6. You're advertising ASINs that can't sell
- 7. A big share of spend goes to your own brand name
- How do I put a number on my ad waste?
- FAQ
Most Amazon ad accounts don't waste money in one big, obvious way. They leak in small ways, each one easy to excuse: a broad keyword nobody checked, a budget that runs dry by lunch, an ad still running on a product with a few units left.
None of these show up as a red alert in campaign manager. They show up as an ACoS that creeps up every quarter and a team that isn't sure why.
Here are the seven signs we look for first when we open an account, what each one means, and the fix Amazon's own guides recommend. If you'd rather put a rough dollar figure on it first, the free Amazon ad-waste calculator takes about a minute and doesn't ask for an email.
1. Your ACoS is above your break-even point
This is the sign that makes the others expensive. Amazon Ads puts it plainly: to stay profitable, your ACoS needs to be lower than your profit margin. Otherwise you're spending more on ads than you're earning.
The trap is judging ACoS against a number someone picked years ago, or against a "good ACoS" figure from a forum. Your break-even depends on your product cost, fees and other expenses, so it's different for every ASIN.
The fix: work out break-even ACoS for each of your top products. Then sort campaigns by spend and lower bids on keywords and targets whose ACoS sits above it, starting with the biggest spenders. If a launch campaign runs above break-even on purpose, write down when it stops. Our glossary entries on ACoS and TACoS cover the math.
2. You haven't added a negative keyword in weeks
Every account has search terms that get clicks and never sell. Without negatives, you keep paying for them.
Amazon's targeting guide is specific about how to do this without overreacting. It recommends evaluating a keyword after it has received at least 20 clicks, using phrase or exact match for negatives, and letting new negatives run for two weeks or more before changing your strategy again.
The fix: pull your search term report for the last 30 to 60 days, filter for terms with 20 or more clicks and zero orders, and add the clearly irrelevant ones as negative exact. Use negative phrase when a whole family of queries is wrong for you, like a size or material you don't sell. Put a recurring 30-minute block on the calendar so this happens every couple of weeks, not once a year.
3. Your winning search terms are still buried in auto and broad campaigns
The search term report also shows the opposite: terms that convert well but are still being bought through automatic or broad campaigns, at whatever price those campaigns happen to pay.
Amazon's Sponsored Products guide recommends checking the report for keywords and products with higher sales and conversion rates, raising bids on those and adding them as exact match, and lowering bids on the ones with low sales and conversion rates.
The fix: move proven terms into an exact-match campaign with their own bids, and add them as negative exact in the discovery campaign they came from, so the two campaigns don't bid against each other.
4. Broad and automatic campaigns spend without a cap
Discovery campaigns are useful. Amazon suggests new advertisers start with an automatic campaign and let it run for about two weeks to learn how shoppers find their products. The problem starts when discovery campaigns share budgets and bids with proven keywords and quietly take most of the spend.
Amazon's keyword targeting guide notes that broad terms can lead to clicks from shoppers less likely to buy your products. The same guide lists keyword hygiene as an ongoing step: remove underperforming terms that may waste spend and add new negatives as needed.
The fix: give broad and auto campaigns their own, smaller budgets, and bids below your exact-match keywords. Treat them as research, and judge them by how many good terms they feed into exact match, not by their own ACoS alone.
5. Campaigns run out of budget before your best hours
If your top campaigns hit "Out of budget" by early afternoon, the morning's clicks used up money your stronger hours needed. That's waste even when ACoS looks fine.
Amazon gives you two tools for this. Budget rules can raise budgets during key events or when a campaign hits a performance target, to help keep top campaigns running and avoid going out of budget. Schedule bid rules let Sponsored Products advertisers raise bids at specific times of day, days of the week and date ranges.
The fix: check two weeks of out-of-budget history and hourly performance. Lower bids on low performers first, so the same budget lasts longer. Then use schedule bid rules to push bids up in the hours that convert, rather than raising the whole budget.
6. You're advertising ASINs that can't sell
Amazon's guide to improving products for advertising says products need to be in stock to be the featured offer and to be eligible for Sponsored Products, and that an advertised product that goes out of stock is paused automatically.
So the stockout itself isn't the leak. The leak is everything around it: spend on low-stock items in the days before they run out, on listings that are suppressed or don't show the featured offer, and on weak ASINs sharing an ad group with strong ones. The same guide also points to reasonable prices, Prime eligibility and positive reviews as things that help ads perform.
The fix: check ad groups against inventory every week in Q4, and plan for products that tend to sell out. Pull spend from ASINs without the featured offer. If clicks are fine but conversion is poor, the problem may be the listing, not the bid. The Amazon listing scorecard is a quick self-check for titles, images and reviews, and the Amazon holiday checklist covers inventory and deadlines for the peak.
7. A big share of spend goes to your own brand name
Amazon's keyword guide says branded keywords help engage high-intent shoppers looking for your products. That's true. It's also why branded clicks often look great on paper: many of those shoppers were going to find you anyway.
The fix: don't switch branded campaigns off. Test it. Where you already rank at the top organically and no competitors bid on your name, lower branded bids for a few weeks and watch total sales, not just ad-attributed sales. Keep defending terms where rivals show up, and move what you save into non-branded discovery.
How do I put a number on my ad waste?
Signs are useful, but budget conversations go better with a number. The Amazon ad-waste calculator asks for your monthly ad spend, ACoS, your target or margin, your branded share if you know it, and six yes-or-no questions that map to the signs above. It returns an estimated monthly and yearly range, the share of spend at risk, and the three fixes likely to save the most, each linked to the Amazon Ads guide behind it. It's XENA's own estimate, not Amazon data, so treat it as a starting point for your own audit.
Work out break-even ACoS for each top product and compare it with current ACoS. Add negatives for terms with 20+ clicks and no orders, then wait two weeks before judging. Move converting search terms into exact match, and negate them in the campaign they came from. Give broad and auto campaigns their own smaller budgets and lower bids. Check out-of-budget history and add schedule bid rules for the hours that convert. Pull spend from low-stock, suppressed and no-featured-offer ASINs. Test lower branded bids where you already rank at the top.
If you'd like a second set of eyes after that, XENA 360 is how our team runs Amazon ads and marketplaces day to day for the brands we work with.
Frequently asked questions
How do I know if my Amazon ads are wasting money?
Start with three checks. Compare each product's ACoS with its profit margin, since Amazon Ads says ACoS needs to stay below margin to make money. Then sort your search term report by spend and look for terms with lots of clicks and no orders. Finally, check whether campaigns run out of budget early in the day or advertise ASINs that are low on stock.
What is a good ACoS on Amazon?
There isn't one number that fits every brand. A good ACoS is one below your break-even ACoS, which is tied to your profit margin after product cost, fees and other expenses. A launch campaign may run above break-even on purpose for a while, but it should be a decision with an end date, not an accident.
When should I add a negative keyword in Amazon Ads?
Amazon Ads recommends evaluating a keyword's performance after it has received at least 20 clicks before adding it as a negative target, and letting negative keywords run for two weeks or more before making further changes. It recommends phrase or exact match for negatives.
Should I stop bidding on my own brand name?
Not automatically. Amazon Ads says branded keywords engage high-intent shoppers looking for your products. But if you already rank at the top organically and no competitors bid on your name, test lower branded bids for a few weeks and watch total sales, not just ad sales, before cutting further.
How much of my Amazon ad spend is wasted?
It depends on your account, and anyone quoting one figure for every brand is guessing. XENA's free ad-waste calculator gives you an estimated range from your own spend, ACoS, target and six yes-or-no checks, and lists the three fixes likely to save the most first.
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Sources
- Amazon Ads: What is advertising cost of sales (ACOS)?
- Amazon Ads: Targeting with Sponsored Products
- Amazon Ads: Sponsored Products best practices
- Amazon Ads: Keyword targeting guide
- Amazon Ads: A complete guide to budget rules
- Amazon Ads: Schedule based bid rules now available for Sponsored Products (Nov. 6, 2023)
- Amazon Ads: Improve your products for advertising
XENA results quoted in this article are as published by XENA Intelligence on the linked pages. Third-party facts are from the linked official documentation, checked Nov 3, 2026.
