Know how the agency gets paid, run the fee at your spend, and make sure the accounts stay yours.
Agencies charge a percentage of ad spend (usually 10% to 20%), a flat monthly fee, or a hybrid of both. Whichever you pick, keep the ad accounts, pixels, and audiences in your own business accounts. Above about $30,000 a month in spend, a full-time hire often costs less. GrowthPair places full-time Paid Social and Paid Search Marketers for about $4,000 a month, all-in.
Paid media agencies charge in three main ways. The model matters as much as the number, because it decides what the agency gets paid more for.
| Model | How it works | A published example | What it rewards |
|---|---|---|---|
| Percentage of spend | A share of your monthly media budget | WebFX says most agencies charge 10% to 20% of ad spend, with the rate usually falling as spend grows | Higher spend. The fee rises when the budget does, whether results do or not. |
| Flat monthly fee | A set price for a set scope | WebFX’s Lite plan is $750 a month | Predictability. Watch for hours shrinking as the account grows. |
| Hybrid | A minimum fee or a percentage, whichever is higher | WebFX Pro: "$975 or 15% of spend, whichever is higher." Enterprise: $4,500 or 12%. | A floor for the agency on small budgets, a percentage on big ones |
How common is each? In WordStream’s 2023 State of the Digital Marketing Agency report, a survey of 300 agencies, 33% priced paid services as a flat fee and 33% as a flat fee plus a percentage of spend. Another 16% charged a percentage of spend, 15% billed hours, and 3% used something else.
Creative is often extra. In the same survey, 52% of agencies charged add-on fees for landing pages, 41% for image ads and display creative, and 28% for custom reporting dashboards. Ask what the fee covers before you compare quotes.
A percentage fee is cheap on a small budget and expensive on a big one. Here’s the 10% to 20% range at four spend levels, next to a flat full-time hire.
| Monthly ad spend | Agency fee at 10% | Agency fee at 20% | Full-time global hire through GrowthPair | Full-time U.S. hire |
|---|---|---|---|---|
| $10,000 | $1,000 | $2,000 | About $4,000 | About $9,400 |
| $30,000 | $3,000 | $6,000 | About $4,000 | About $9,400 |
| $60,000 | $6,000 | $12,000 | About $4,000 | About $9,400 |
| $100,000 | $10,000 | $20,000 | About $4,000 | About $9,400 |
The U.S. figure uses the Bureau of Labor Statistics median for market research analysts and marketing specialists, $78,760 in May 2025. Benefits were 30% of total compensation for private-industry workers in June 2026, so $78,760 ÷ 0.70 ÷ 12 is about $9,400 a month.
Our take: under about $10,000 a month in spend, an agency or freelancer is the cheaper call. Somewhere between $20,000 and $40,000, a full-time hire starts to cost less than a percentage fee, and the gap widens as you scale. An agency does bring a team, though. If you need a strategist, a designer, and an analyst on the account, price those seats too.
This is the question most buyers skip, and the one that hurts at the exit. If the ad account, the pixel, and the audiences live in the agency’s business account, leaving means asking for them back.
Both platforms are set up so you can own the accounts and give an agency access.
### The exit checklist
Run this before you sign. Every item should be a yes.
If an agency resists any of these, treat it as the answer to your question.
Each one wins somewhere. Pick by spend and by how much daily work the account needs.
For what each specialist should know, see our guides to hiring a Google Ads specialist and a Meta Ads specialist.
Where we’re the wrong call: if you spend a few thousand dollars a month on ads, a freelancer or a small agency at $1,000 to $2,000 a month costs less than a full-time hire. If you need a head of paid media to set strategy and manage a team, hire them in-house. And we place one marketer per seat, so if you need strategy, creative, and media buying on day one, an agency’s team gets you there faster.
A GrowthPair Paid Social Marketer or Paid Search Marketer works full-time on your accounts only, in your time zone, for about $4,000 a month, all-in, at any spend level. A GrowthPair marketer works inside your accounts as a user you add, the same as an employee, so there’s nothing to hand back when you leave. Every candidate passes our five-step vetting: a resume screen, a phone interview, a proctored skills assessment, a live interview with a marketer, and your interview. About 1.5% of applicants are accepted. EmoryDay, an agency, hired an advertising specialist through us to support client campaigns across Google, Meta, LinkedIn, and Bing. Rob Fienberg, who has overseen client service and operations there for 17 years, had been cautious: "Google Ads is complicated. Meta is complicated." The hire passed his 30-day review with "flying colors." Read the EmoryDay case study.
To compare all four hiring models, see in-house vs agency vs freelancer vs staffing.
Most agencies charge 10% to 20% of ad spend or a flat monthly fee, per WebFX. WebFX’s own published plans start at $750 a month. On $30,000 a month in spend, a 10% to 20% fee is $3,000 to $6,000.
It can be on small budgets, but it pays the agency more when you spend more, whether results improve or not. Ask for a flat fee or a hybrid with a cap as your spend grows.
You should. Keep the Meta ad account in your business portfolio and share access with the agency, and hold Admin on Google Ads while the agency links its manager account. Then nothing has to be handed back when you leave.
Costs, clicks, and impressions at the account level. Under Google’s third-party policy, a required monthly report must show the exact amount Google charged, excluding the agency’s fee, or the agency can let you sign in instead.
When spend is steady and the work is daily: creative tests, budget pacing, and search term reviews. Somewhere between $20,000 and $40,000 a month in spend, a full-time hire usually costs less than a percentage fee.
No. You pay about $4,000 a month for a full-time paid media marketer, whatever you spend on ads. It’s month-to-month with 30 days’ notice.
