A Google Ads management fee is not a single number. Agencies usually work with one of three models: a fixed monthly fee, a percentage of your ad spend, or a performance-based mix of the two. In the Turkish market the monthly management fee varies across a wide band depending on scope, spend size, and reporting depth; a small single-campaign setup and a multi-channel account with weekly optimization are not managed for the same price. This article explains the models, what packages really include, and how to measure the return on your fee using ROAS. Instead of a fixed number, we will show you how to work out the number that fits your own business.
What determines a Google Ads management fee?
Price is set not by an agency price list but by the complexity of your business. Two firms in the same sector can pay very different fees because one runs a single search campaign while the other runs search, shopping, YouTube, and remarketing together. The main factors are:
- Number and type of campaigns: Search only, or shopping + video + display + remarketing?
- Monthly ad budget: As spend grows, so does the optimization and reporting effort.
- Setup state: Do conversion tracking, GA4, and tagging need building from scratch, or are they ready?
- Reporting frequency: A monthly summary, or weekly optimization and meetings?
- Creative needs: Are image, video, and copy production included?
Which pricing model do Google Ads agencies use?
There are three common models, each with an advantage and a blind spot. The right one depends on your spend size and how predictable you want the cost to be.
| Model | How it works | Best for | Watch out |
|---|---|---|---|
| Fixed monthly fee | Defined scope, fixed fee | SMEs with a predictable budget | Scope must be written clearly |
| Percentage of spend | A share of ad spend (market band typically 10-20%) | Accounts with fluctuating spend | Fee rises with spend; align incentives |
| Performance / hybrid | Low fixed + outcome-based bonus | E-commerce with measurable conversions | Define "outcome" clearly in the contract |
Across market research and agency quotes these bands are wide, which is why an "average price" alone is misleading. What matters is seeing, item by item, what you get for the fee.
Why does a cheap package cost more?
The lowest quote is often the most expensive option, because a very low management fee usually means "set and forget": the campaign is launched, but no one prunes search terms, adjusts bids, or pauses ads that do not work. Meanwhile your ad budget, the real money, drains away. Saving on a small management fee while wasting a large ad budget is a bad trade.
The management fee is the small part of the cost; the real money is your ad budget. The right question is not "who is cheapest?" but "who makes the most of every lira I spend?"
How is ROAS calculated, and what does it show?
ROAS (Return on Ad Spend) is the ratio of revenue from ads to ad spend. The formula is simple:
ROAS = Revenue from ads ÷ Ad spend
Say you spent 20,000 on ads in a month and those ads produced 80,000 in sales. ROAS = 80,000 ÷ 20,000 = 4, meaning 4 in revenue for every 1 spent. But there is a trap: ROAS is revenue, not profit. You cannot say "I made money" before subtracting product cost, shipping, commissions, and the management fee. That is why you must know your break-even ROAS: if your gross margin is 25%, your break-even is 4, and a ROAS below 4 means the ads are losing money.
What should good Google Ads management include?
To get value for the fee, make sure the package covers:
- Confirmation that conversion tracking and GA4 work correctly (wrong measurement means wrong decisions).
- Negative keyword pruning, the single most important routine for protecting budget from irrelevant searches.
- Separating brand and non-brand campaigns so customers already searching for you are not shown as "new acquisition."
- Regular bid and budget optimization, pausing ads that do not work.
- Clear, plain reporting: spend, conversions, cost, and ROAS together.
At Castintech we build ads not as a standalone line item but as a whole that works with your site and conversion tracking. The goal is not a pretty number on a dashboard but real sales in the till.
Frequently Asked Questions
How much does Google Ads management cost per month?
There is no single figure; the fee varies across a wide band with the number of campaigns, monthly ad budget, reporting frequency, and creative needs. Fixed fee, percentage of spend (typically 10-20% in the market), or performance-based hybrid models are used. The best approach is to work out the number that fits your business by discussing your goals.
Is the management fee included in the ad budget?
No. The management fee pays for the agency's work; the ad budget is money you pay directly to Google to buy clicks and impressions. They are separate items, and the ad budget is usually far larger than the management fee.
What is a good ROAS?
A "good ROAS" depends on your business; there is no magic number. What matters is the break-even point calculated from your profit margin. With a high margin even a low ROAS can be profitable; with a low margin you need a higher ROAS. Know your break-even first, then set the target.
Does Google Ads make sense on a small budget?
Yes, but focus is essential. A small budget spread in every direction produces results nowhere. Focusing on a single high-intent campaign is far more efficient than splitting the budget across five channels. On a small budget, the biggest saving is correct setup and negative-keyword discipline.
If I switch agencies, do I keep my account?
You should. The Google Ads account and all its historical data must belong to you; the agency should only have manager access. Before starting, clarify "is the account opened in my name?"; this protects you from lock-in later.
Let us work out your number together
Price starts with your real business goals. In a pre-assessment call we discuss your current spend, conversion tracking and goals, and look together at where it makes sense to start and how the budget could be approached. Explore our ad management service or get in touch, and let us clarify the number together.
