# How much does a marketing agency cost — and what do you still do yourself?

> How much does a marketing agency cost in 2026? Retainers run $1,500–$5,000 a month before your own hours. What each tier buys, and the cheaper route.

By MarketingBuddy team · Published 2026-10-31 · Updated 2026-10-31

Canonical URL: https://www.marketingbuddy.si/blog/how-much-does-a-marketing-agency-cost

![How much does a marketing agency cost — and what do you still do yourself?](https://www.marketingbuddy.si/mascot-256.png)

Founders ask me how much does a marketing agency cost, and the honest answer is a range, because the range depends on one thing: how much of the work you still do yourself. In 2026, a freelance specialist with one skill bills roughly $500–$2,500 a month. A small agency retainer runs $1,500–$5,000. A full-service agency with a strategist, a media buyer, a writer and a designer lands at $8,000–$20,000. The retainer is not the whole bill. Your briefing, approving and chasing hours sit on top of it, and nobody quotes you that part.

Below: what each tier really buys, the work that still lands on your desk, and what I would do with a product to sell and no marketing team.

## What a monthly retainer actually buys

A retainer is a block of hours most of the time. At the low end you buy execution — a set of ad creatives, a few social posts, one report. At the high end you buy a small team and a strategist who decides where those hours go.

Three things set the number:

- **Who does the work.** A junior with a checklist, a senior who has run the play before, or both.
- **How many channels.** One channel, or five: ads, email, search, social, reporting.
- **How much strategy is included.** Production only, or the plan behind it.

Ask for the hourly rate behind the retainer before you sign anything. A $3,000 retainer at $150 an hour is 20 hours a month. Spread across five channels, that is about an hour per channel per week — and part of it disappears into answering questions about your own product. The [SBA's marketing guide](https://www.sba.gov/business-guide/marketing) is the plainest free starting point I know for what that work involves. Each of those jobs is spelled out in [what a marketing agency actually does](https://www.marketingbuddy.si/blog/what-does-a-marketing-agency-do), from the ad account down to the monthly report.

## How much does a marketing agency cost, by tier

| Tier | Typical monthly cost | What you get |
| --- | --- | --- |
| Freelancer, one skill | $500–$2,500 | Ads or SEO or email. One person, no backup when they are booked. |
| Small agency, 2–5 people | $1,500–$5,000 | Two or three channels, a shared account manager, monthly reporting. |
| Full-service agency | $8,000–$20,000 | Strategy, creative, media buying, a named team, quarterly planning. |
| Performance agency | 10–20% of ad spend | Media buying with a bonus tied to results. Weak fit under about $10,000 a month in spend. |

Setup fees are separate. A new ad account build, a website rebuild or a brand sprint often adds $2,000–$10,000 before the first retainer month, and agencies rarely lead the pitch with that number.

## What you still have to do yourself

The retainer covers the work. It does not cover the decisions. In my experience a founder on a $3,000 retainer still spends 4–8 hours a month on:

- Approving creative and copy before it ships.
- Supplying product detail, screenshots and the offer itself.
- Sitting on calls and answering "what should we push this month?"
- Checking the numbers the report does not explain.

If the ad account was never set up properly, that count climbs fast. It is worth reading about [fixing tracking before you spend another dollar](https://www.marketingbuddy.si/blog/fix-tracking-before-you-spend) — the first month of an agency relationship is often spent on exactly that, billed at full rate.

## When an agency is the right call

Hire one when three things are true at once: you spend more than $5,000 a month on media, your offer already converts, and your own hours are the bottleneck. At that point a team that runs the channel better than you do pays for itself, and the numbers to watch are [CAC and LTV](https://www.marketingbuddy.si/blog/cac-ltv-and-the-numbers-that-measure-online-marketing), not the retainer line.

Bureau of Labor Statistics data on [what these skills cost as employees](https://www.bls.gov/ooh/business-and-financial/market-research-analysts.htm) is a useful sanity check: one in-house hire usually costs more than a small agency retainer once salary, tools and management time are counted.

## When it is not

Skip the agency when the problem is hours, not knowledge. If the work is already known — post three times a week, send the flows, check the ads — you are paying someone to remember and execute, which is the most expensive way to buy calendar reminders.

Skip it too when the budget is under $2,000 a month. Below that, an agency spreads one junior across your account and the honest output is a report.

## What the same money buys with AI agents you approve

For roughly what one small-agency retainer costs per month, you can run the routine work yourself with agents that draft and a human who approves. That is the [marketing agency alternative](https://www.marketingbuddy.si/blog/marketing-agency-alternative) most one-person teams end up choosing: the agents prepare ad copy, email flows, posts and the search brief, and every send waits for you to click approve. The [agents](https://www.marketingbuddy.si/ai-agents) cover the channels a small agency would, for a fraction of the fee.

It is not free of your time — you still approve — but it is free of the retainer, and nothing goes out that you have not seen.

## How to decide in one sitting

Write down four numbers: monthly ad spend, hours a week you can give marketing, revenue per new customer, and how many customers you need this quarter. Then:

1. Under $2,000 a month in spend and under 3 hours a week: run it yourself, with or without agents.
2. $2,000–$5,000 in spend and 3–6 hours a week: one freelancer on the channel that already works.
3. Over $5,000 in spend with a converting offer: an agency or a senior contractor, measured on CAC and payback.

Most founders I talk to land in the first group and hire anyway. That is the expensive mistake.

## The cheap way to test it

Before you sign a six-month retainer, spend one month doing the work with help that costs less than a single retainer hour. Set up the four email flows, fix the tracking, publish one useful page, run one small campaign. You will learn more about your own funnel in four weeks than a pitch deck can tell you — and you will know exactly which hours you want to hand over. If you are starting from zero traffic as well, how to get your first 100 users covers the first month in order.

[Start for $1](https://www.marketingbuddy.si/sign-up) and keep the final say on every send.