How much should I spend on Google Ads?

Minimum $1,000/month for Search. Google needs ~30 conversions/month for Smart Bidding to optimize well. Budget = target conversions × target CPA.

Break-even CPA = AOV × margin. Target 30-50% below break-even for profit.

Free tool · Ad budget calculator

Set your ad budget, then defend it.

Plug in CPA, conversion rate, and margin. See whether the math works, before you spend a dollar.

AOV: Your platform's reported average order value (Shopify, Woo, etc).
Margin: Revenue minus COGS, shipping, and processing fees, before ad spend.
Conversion rate: GA4 Reports Monetization. Typical e-comm: 1-3%. Lead gen: 2-5%.
CPC: Use a Keyword Planner estimate or your current account average.
Target conversions: How many sales you want per month. Google needs ~30 to optimize Smart Bidding well.

Tracking that captures every conversion is the hard part. Twenty minutes on a call and we'll show you what's leaking.