Flat fee or percentage of ad spend?
By Leo Agostini, 13 years in marketing. Updated .
There are three ways agencies charge to manage Google Ads and Meta ads: a percentage of your ad spend, a flat monthly fee, or a mix of both. The right one depends on your budget and on whose interest the fee protects.
The three models
Percentage of spend. Usually 10% to 20% of what you spend on ads, often with a minimum fee of $1,000 to $1,500 so small accounts stay worth it for the agency.
Flat fee. A fixed monthly price for a defined scope. Most small business guides place it between $500 and $1,500 a month for one channel.
Hybrid. A base fee plus a smaller percentage, or whichever is higher. Common once accounts get large.
The math at different budgets
A 15% fee with a $1,000 minimum, next to my flat $900 for one channel. Your ad spend is the same in both cases and goes to Google or Meta.
| Monthly ad spend | 15% with $1,000 minimum | Flat fee |
|---|---|---|
| $1,500 | $1,000 | $900 |
| $3,000 | $1,000 | $900 |
| $6,000 | $1,000 | $900 |
| $10,000 | $1,500 | $900 |
To be fair: a percentage agency with no minimum can cost less on small budgets. At $3,000 a month, 15% is $450. Ask about the minimum before you compare.
Why the model matters more than the number
With a percentage fee, the agency earns more every time it recommends a bigger budget, even when the extra spend brings no customers. With a flat fee, the advice to spend more only makes sense if it brings more leads. That is why I charge flat, and why I tell owners when to stop spending.
Five questions to ask any agency
- Are the ad accounts in my name, and do I keep them if I leave?
- Is there a minimum fee, a setup fee or a long contract?
- Up to what ad budget does the price stay the same?
- Is conversion tracking for calls and forms included, or extra?
- Will reports show leads and cost per lead, or only clicks?
Questions owners ask
- What is a normal fee for Google Ads management?
- Most 2026 pricing guides put small business management between $500 and $1,500 a month, or 10% to 20% of ad spend, often with a minimum fee of $1,000 or more. Setup fees of $500 to $2,500 are common.
- Is a percentage of ad spend a bad model?
- Not always. It is simple and scales with large accounts. The catch is the incentive: the agency earns more when you spend more, whether or not the extra spend brings customers.
- When is a flat fee better?
- When you want a predictable cost and advice that is not tied to your spend. A flat fee only works if the scope is clear, so check what is included and up to what budget.
My prices, in one line
$900 a month for Google or Meta, $1,500 for both, up to $10,000 a month in ad spend. Setup is free when you start with 3 months, and the accounts stay in your name.
See plans and prices