Most wasted PPC spend hides in two places: keywords bidding past their value, and search terms that click but never convert. SellerOS attacks both — with math you can audit on every row.
The optimizer is a proportional controller pointed at your target ACoS — each keyword gets exactly one of five actions, and the label always matches the bid direction:
Raise
The keyword converts below your target ACoS — there's headroom. The optimizer bids up proportionally to buy more volume while staying on target.
Lower
Converting, but past target. The bid comes down proportionally to (target ÷ measured ACoS), rate-limited so one bad day can't crater a keyword.
Cut
Enough clicks to judge and zero orders. Stop the bleed — the biggest single source of wasted ad spend in most accounts.
Explore
Too few clicks to judge fairly. The optimizer keeps a modest bid to gather data instead of killing a keyword before it had a chance.
Hold
On target within tolerance. No change — churn for its own sake is how accounts drift.
Set the account-level target ACoS once; the optimizer computes each keyword's next bid against it. Change the target and every suggestion recomputes — without reverting bids you already applied.
Bids move at most a bounded percentage per cycle. Signal, not noise, moves your account.
Every suggestion says why: “ACoS 44% over target — lowering bid.” You can audit the logic before you apply it, one keyword or all pending at once.
The analyzer sorts every customer search term into negate / harvest / reduce-bid / keep, and totals the wasted spend you'd recover by negating.
Break-even ACoS and maximum-bid calculators from your real margins — so 'target ACoS' is a number you derived, not a vibe.
Track spend against the month's budget with on-track / over / under status and a recommended daily rate for the remainder — before the overspend, not after.
No. The optimizer computes suggestions with reasoning; you apply them — per keyword or all pending at once. Applied bids persist, including when you later change the account target.
Keywords below the minimum-clicks threshold stay in explore mode with a modest bid until there's enough data to judge them fairly.
Derive it: the break-even ACoS calculator computes the ceiling from your real unit margins, and you set the target below it with the profit cushion you want.
Open the Bid Optimizer, read the reasoning column, drag the target-ACoS slider and watch every suggestion recompute.
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