Budgets and bids
Once a campaign exists, your two main levers are budget (how much you’ll spend per day) and bid (how much you’ll pay per click). This page covers both, including the automated bid rules that adjust bids based on performance.
In this guide:
- Set a daily budget on one campaign
- Set a default bid for an ad group
- Bulk-adjust budgets and bids across campaigns
- Create an automated bid rule
Step 1: Set a daily budget on one campaign
Open a campaign → Settings tab → Daily budget. Enter the amount in the campaign’s currency.
Amazon caps spend at the daily budget across the day. If you exceed it before the day’s end, the campaign pauses until midnight and resumes.
Step 2: Set a default bid for an ad group
Open the campaign → Ad groups tab → click an ad group → Default bid.
Default bid applies to any keyword in the ad group that doesn’t have its own bid override. Override individual keyword bids on the Targeting / Keywords tab if certain terms warrant a higher or lower CPC.
Step 3: Bulk-adjust across campaigns
In the campaign list, tick multiple campaigns → Bulk actions → Set daily budget or Set bid.
You can adjust:
- Absolute — set every selected campaign to $X.
- Relative — bump every selected campaign by +/− $X or +/− Y%.
- Cap-aware — never go below a floor or above a ceiling.
Hilal pushes the changes one row at a time so a single Amazon-side error doesn’t kill the batch.
Step 4: Create an automated bid rule
Bid rules adjust bids automatically based on performance. Go to Advertising → Bid rules → New rule.
Define:
- Scope — which campaigns or ad groups the rule applies to.
- Trigger — e.g., “ACoS over 30%”, “ACoS under 10%”, “no impressions in 7 days”.
- Action — e.g., “decrease bid by 10%”, “increase bid by 15%”, “pause keyword”.
- Frequency — how often the rule evaluates (hourly / daily / weekly).
- Caps — minimum bid floor, maximum bid ceiling.
Click Save. Hilal evaluates the rule on the configured schedule, applies any matching adjustments, and logs each one.
Step 5: Review bid-rule actions
The Bid rules page has an Activity log tab showing every adjustment the rule has made — keyword, before, after, why. Useful for trust-building when you first turn on a rule.
Troubleshooting
- “Bid below floor / above ceiling” errors. Amazon enforces per-category bid floors and your rule’s caps may collide. Tighten the cap or adjust the rule’s action size.
- Rule isn’t firing. Check the trigger window (a “no impressions in 7 days” rule waits a full 7 days). Also confirm the campaign is in scope.
- Daily budget hits the cap mid-day. Either bump the budget or lower bids — the campaign will spend more efficiently if it doesn’t pause.