How often should I optimize Amazon PPC campaigns?

Check budgets and stock daily, search terms and negatives weekly, bids and placements about every two weeks, and structure and targets monthly. Amazon itself suggests reviewing bids every two weeks and limiting changes during tests so you can see what each change did.

How do I lower my ACoS on Amazon?

Add negatives for wasteful terms, lower bids on keywords above target, move budget to converting exact keywords, and improve listing conversion. Better images, reviews and price lift conversion rate, which lowers ACoS without cutting traffic. Avoid cutting branded or rank-driving keywords just to hit a number.

When should I add a negative keyword?

When a search term has enough clicks to judge and still does not sell. Amazon suggests evaluating after at least 20 clicks. Use negative exact for single terms and negative phrase for whole groups of irrelevant searches, then let the change run two weeks.

What is search term harvesting?

It is moving search terms that convert well from automatic or broad campaigns into manual exact match campaigns, where you can control the bid. Add the same terms as negative exact in the source campaign so the two campaigns do not bid against each other.

Should I use automation for Amazon PPC optimization?

Yes, for repeat work such as bid changes and budget rules, once targets are set from margin. Keep a person reviewing changes weekly, make sure only one system changes each bid, and check stock levels so automation does not push spend onto products about to run out.

Amazon PPC Optimization: A Weekly Checklist for 2026

What changed: A repeatable routine for bids, search terms, negatives, placements and budgets
When: Updated October 2026
Who it affects: Sellers and vendors running Sponsored Products and Sponsored Brands
What to do: Set margin-based targets, then run the weekly checklist every week

Key takeaways

Set a target ACoS per product from margin before changing any bid.
Harvest and negate search terms weekly; review bids and placements every two weeks.
Judge results monthly on TACoS and total sales, not ACoS alone.

1Set targets
Break-even ACoS per product
2Harvest terms
Winners to exact match
3Add negatives
20+ clicks, no sales
4Tune bids
Every two weeks
5Check TACoS
Monthly, against total sales

Start with targets, not bids

Optimization needs a goal to aim at. For each product, calculate break-even ACoS, the margin left after Amazon fees and cost of goods but before ads, and set a target below it. Launch products may run above target on purpose for rank; mature products should run at or below it. Without this step, every later change is a guess. Our guide to a good ACoS for Amazon walks through the calculation.

Fix the listing before you touch bids

Ads send traffic; the listing converts it. Amazon's own best practice guide recommends advertising products with five or more reviews rated 3.5 stars or higher, at least four images of 1,000 pixels or more, at least three bullet points and a competitive price. If a product converts poorly, bid changes only make the loss smaller. Read our guide to Amazon conversion rate before raising budgets on weak listings.

Daily checks: budget, stock and anomalies

Daily checks take minutes and prevent the biggest losses.

Campaigns that ran out of budget early on good days
Products low on stock or about to lose the featured offer
Sudden spend spikes with no sales
Campaigns paused by mistake or stuck in review

Weekly: search terms and negative keywords

The search term report is the most valuable report in Amazon Ads. Each week, move search terms that convert at or below target into exact match in a manual campaign, and add negatives for terms that spend without selling. Amazon suggests evaluating a negative after at least 20 clicks and letting changes run two weeks or more.

Use negative exact for single bad terms and negative phrase for a whole family of irrelevant searches. Add your new exact keywords as negative exact in the discovery campaign so the two campaigns do not compete.

Every two weeks: bids and placements

Amazon recommends reviewing bids about every two weeks and limiting changes during tests. Raise bids on keywords below target ACoS with room to grow, and lower bids on those above it. Then check the placement report: if top of search converts much better than rest of search, raise the top of search adjustment step by step. Our Amazon PPC bidding strategy guide covers fixed and dynamic bids in detail.

Monthly: structure, budgets and TACoS

Once a month, step back from keywords. Check that products are grouped by price and margin, that each campaign has a clear job, and that budget is moving to the products and campaigns that earn it. Then compare ad spend with total sales, not just ad sales. TACoS that falls while total sales rise means ads are building organic sales. The Amazon advertising metrics guide explains what to track.

Optimizing Sponsored Brands and Sponsored Display

The same principles apply beyond Sponsored Products, with a few differences. Sponsored Brands report on a 14-day attribution window, so compare them with each other rather than directly with Sponsored Products on a 7-day window for sellers. Test video against product collection formats on the same keywords, and send Store spotlight traffic to a Store page built for that search.

For Sponsored Display, judge retargeting on return visits and sales, and judge audience campaigns on new-to-brand customers as well as ACoS. Keep these budgets separate from search campaigns so one does not starve the other.

Amazon PPC optimization checklist, step by step

Use this as your standing weekly routine.

Confirm every product's target ACoS is current
Check budgets and stock for the top sellers
Harvest converting search terms into exact match
Add negatives for terms with 20 or more clicks and no sales
Adjust bids toward target on keywords with enough data
Review the placement report and adjust top of search
Note every change so results can be traced next week

Optimization cadence

Daily
Budgets, stock and spend spikes
Weekly
Search terms and negatives
Every 2 weeks
Bids and placements
Monthly
Structure, budgets and TACoS
Quarterly
Targets and margin refresh

Mistakes that waste the most money

Small habits drain budgets quietly. These are the ones to watch for.

Changing bids daily on too little data
Pausing branded keywords to hit an ACoS number
Advertising products that are about to stock out
One target ACoS for every product
Ignoring Sponsored Brands search term data
Judging success on ACoS without TACoS and profit

Automating the routine

Much of this checklist can be automated with rules or software once the targets are right. Amazon's budget rules can raise budgets on schedule or when performance clears a threshold, and third-party tools can automate bid changes. See our review of Amazon PPC tools. PPC Spider runs this routine through SpiderOS, which watches bids, budgets, search terms and stock every day, inside our Amazon PPC management plans. A free Amazon audit shows where your account stands today.

Sources

Amazon Ads: Best practices for your Sponsored Products ads (advertising.amazon.com/library/guides/sponsored-products-best-practices)
Amazon Ads: A guide to targeting with Sponsored Products (advertising.amazon.com/en-us/library/guides/targeting-with-sponsored-products/)
Amazon Ads: Guide to dynamic bidding up and down with Sponsored Products (advertising.amazon.com/library/guides/dynamic-bidding-sponsored-products)

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