Costs
How much does a marketing agency really cost a small business?
The Orchestra Team · June 16, 2026 · 6 min read
If you've ever asked an agency "what will this cost?", you know the answer is rarely a single number. It's a retainer, plus a percentage of your ad spend, plus setup fees, plus "that's out of scope." For a small business, the real cost is easy to underestimate — so let's break it down honestly.
The retainer is just the starting point
Most agencies working with small businesses charge a monthly retainer somewhere between €1,000 and €5,000, depending on scope. That usually covers a set number of deliverables: a handful of posts, one or two campaigns, a monthly report.
The retainer scales with how many things you ask for. Social content, paid ads, email, and SEO are each their own workstream — add one and the retainer goes up. Bundle all of them and you're often at the top of that range before any ad spend at all.
The fee on your ad spend is the part people miss
Here's the line item that quietly adds up: most agencies charge a management fee on your ad budget — commonly 10–20%. Spend €3,000/month on Meta and Google, and at 15% that's an extra €450/month — €5,400 a year — on top of the retainer, just for someone to press the buttons.
And it's a strange incentive: the more you spend, the more they earn, whether or not the spend is working.
The hidden costs
- Onboarding and setup fees — often a one-off €500–€2,000.
- Scope creep — "an extra post," "a quick landing page," "another audience" — billed.
- Turnaround time — you wait days for a change you could make in minutes.
- Your time — briefing, reviewing, chasing, approving. That's hours every week that never show up on the invoice but are very real.
How to compare it honestly
The fair way to compare an agency to doing it in-house (or with a platform like Orchestra) is to separate two things:
- The work — the cost to produce and run your marketing (retainer + management fee).
- The ad spend — money paid to Meta and Google, which is the same no matter who runs it.
Ad spend isn't a saving — you pay the platforms either way. The number that actually differs is what you pay to get the work done. That's where a connected platform changes the math: one flat subscription instead of a retainer, and no percentage fee on your ad spend.
If you want to see the gap for your own scope, we built a free agency vs Orchestra cost calculator — pick your channels, post frequency, and ad spend, and it shows the side-by-side in seconds.
The honest caveat
A great agency is worth it for some businesses — especially if you want a senior strategist in the room and have the budget for it. The point isn't that agencies are bad. It's that, for a small team, a lot of the monthly cost is production and management — the repeatable work — and that's exactly the part software now does well, at a fraction of the price.