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). You can edit budgets and bids manually, inline on the campaign manager, or in bulk. For automated adjustments, use rule-based bidding in the Automation Hub.

In this guide:

• Set a daily budget on one campaign
• Set a default bid for an ad group or individual keyword
• Bulk-adjust budgets and bids across campaigns
• Set up automated bid adjustments with rules (in Automation Hub)

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 campaign budgets

In the Campaign Manager → Campaigns tab, select multiple campaigns by ticking their checkboxes → Bulk actions → Edit → enter a new Daily Budget.

The bulk-edit dialog applies the same budget amount to all selected campaigns. Changes are submitted as a single batch request.

Step 3b: Bulk-adjust ad group and keyword bids

In the Campaign Manager → Ad Groups or Keywords tab, select multiple rows → Bulk actions → Edit → enter a new Current Bid.

The bulk-edit dialog applies the same bid to all selected ad groups or keywords. Changes are submitted as a single batch request.

Step 4: Set up automated bid adjustments

To automatically adjust bids based on performance (e.g., “increase bids if ACoS is below 20%”), use the Rules Engine in the Automation Hub.

Go to Advertising → Automation → Rules Engine → click + Create New Rule (or Create rule if the list is empty).

Define:

• Conditions — e.g., “ACoS over 30%”, “no sales in 7 days” (build complex rules with all_of/any_of/not logic)
• Action — what to do (bid increase/decrease, pause, resume, etc.)
• Backtest — preview how many times the rule would fire based on historical data

Save the rule and set its autonomy mode:

• Suggest: the rule recommends actions; you approve them in Actions & Approvals
• Approve: the rule auto-approves actions; you can still review/reject in Actions & Approvals

Autonomy mode is per-marketplace. Some marketplaces may not support Autonomous execution; check your region settings.

See Automation Hub for complete details on building rules, dayparting, and guardrails.

Troubleshooting

• “Bid below floor / above ceiling” errors. Amazon enforces per-category bid floors. Adjust your bid to be within Amazon’s allowed range.
• Inline edit bid field doesn’t show. You need org:update_advertising permission to edit bids. Ask your admin.
• Daily budget hits the cap mid-day. Either increase the budget or lower keyword bids. Lower bids result in fewer clicks and more efficient spend.
• Automated rule isn’t firing. Make sure the rule’s autonomy is set correctly for your marketplace and check the condition window (e.g., a “no sales in 7 days” condition requires 7 days of history). See Automation Hub.

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