#bid #Amazon Ads #KDP #ACOS #Sponsored Products

How Much Should You Bid on Amazon Ads?

James Whitfield · July 23, 2026 · 6 min read

A good starting bid on Amazon Ads is Amazon's suggested bid, then you adjust up or down based on whether the keyword sells. Bid too low and your ad never shows; bid too high and you overpay before you have data. This guide explains how to set the first bid and when to change it.

Start at the suggested bid

When you add a keyword, Amazon shows a suggested bid and a range. Start near the suggested value. It is Amazon's estimate of what it takes to win the auction for that term, based on real recent data. Going far below it usually means no impressions; going far above it means you pay a premium before you know if the keyword converts.

The number that should guide every bid

Your bid should be anchored to your break-even ACOS, which equals your profit margin. A keyword that converts can justify a higher bid; a keyword that only spends should have its bid cut or be paused.

A simple way to think about a target bid on a proven keyword:

Target bid = Conversion rate x Order value x Target ACOS

If a keyword converts 10% of clicks, each sale is worth $4, and your target ACOS is 30%, a reasonable bid is around 0.10 x 4 x 0.30 = $0.12 per click. This is a guide, not a rule, but it stops you bidding blind.

When to raise a bid

The keyword produces sales at or below your target ACOS. Raise it to win more of those clicks.
The keyword gets impressions but few clicks and a low placement. A modest raise can move it up the page.

When to lower or pause a bid

Many clicks, no sales: lower it, and consider adding it to your negative keywords.
ACOS well above break-even with no sign of improving: lower it toward profitability.

Change bids gradually

Move bids in small steps, around 10 to 20 percent at a time, and give each change time to gather data before judging it. Large swings make it impossible to tell what caused a change in results. This slow, per-keyword adjustment across a whole catalog is exactly the repetitive work Essentia automates.

FAQ

What should my first bid be? Start at or near Amazon's suggested bid. It reflects real auction data for that keyword, so it is the safest starting point before you have your own results.

How often should I change bids? Review every one to two weeks. Sales attribution is delayed, so changing bids daily reacts to noise rather than signal.

Should I ever bid above the suggested range? Only on keywords that already convert well for you. Paying a premium for an unproven keyword is how budgets get wasted.