Budgets
Find profitable campaigns that run out of budget
A campaign that hits its daily budget by noon stops showing for the rest of the day. If it's profitable across the series, that's readers left on the table. The budget check finds those campaigns from your campaign report.
Every member tool is free during the open beta, through January 31, 2027. No card needed.

How it works
- 1
Download the campaign report
Sponsored Products, Campaign, time unit Daily, last 30 days.
- 2
See days at budget
For each campaign: daily budget, average spend, days it hit the cap, and true ACoS across the series.
- 3
Do the one thing that fits
Raise the budget, fix bids first, or raise bids, with the new daily budget and the profit it should add.
Budget advice that checks profit first
Every campaign gets one of four answers, and the order matters: a losing campaign is never told to spend more.
- Raise budget: profitable and capped, with a new daily amount
- Fix bids first: capped but losing money across the series
- Raise bids: very profitable but not using its budget
- Fine: spending within budget at an acceptable return

Built by Michael Cortez
PPC strategist who manages Amazon and Google Ads for a living. Author Ads Pro exists because ACoS hides what Kindle Unlimited readers are worth. More about me.
Questions
How do I know if a campaign is running out of budget?
Download the Sponsored Products campaign report with the time unit set to Daily. Author Ads Pro counts the days each campaign spent at least 90% of its daily budget.
Should I raise the budget on every capped campaign?
No. Only on campaigns that are profitable across the series. A campaign that runs out of budget while losing money needs lower bids and negatives first, or more budget just means bigger losses.
How much should I raise it?
Between 25% and 100%, depending on how far under your target true ACoS the campaign is. The estimate of extra profit assumes the added clicks earn 70% as well as today's, because extra clicks are usually a little weaker.
What if a profitable campaign isn't using its budget?
Then budget isn't the limit. Raise bids on its winning keywords to get more clicks. The budget check flags those campaigns too.
Related
Free tool
Kindle Author Ads Analyzer
Upload your search term report: negatives, bid changes and harvest keywords judged on series profit.
Free tool
Break-even ACoS calculator for a series
Your real break-even ACoS once KU page reads and read-through count.
Free tool
KENP calculator
Turn Kindle Unlimited pages read into royalties, at any month's rate.
Free tool
ACoS calculator for KDP authors
ACoS, ROAS and true ACoS for a book ad, side by side.