A social media marketing agency for a small business typically costs $1,500 to $5,000 a month in retainer, with ad spend on top, and a local one-person shop can start near $1,000.
Those are typical quoted ranges, not a survey.
For that money you get a strategy, a content calendar, posts on two or three channels, someone answering comments, ads if you run them, and a monthly report.
You need one when the job includes ads, a campaign with a deadline, community management or a strategy you do not have.
If the job is two or three posts a week about what your business already does, that is software now: Boomp reads your website and writes the posts from $9 a month, and you may not need an agency at all.
What a small business agency retainer actually includes
The word "agency" covers a wide range, so start with the deliverables.
A typical small business retainer bundles some or all of these.
- Strategy. A document about who you are talking to, what you say and on which channels, refreshed a few times a year.
- Content. A monthly calendar and the posts themselves, usually eight to twenty a month, written and designed by the team from a brief and a kickoff call.
- Publishing. Scheduled to your accounts after you approve the calendar.
- Community management. Someone reading and answering comments and direct messages within a set response time.
- Paid ads. Setting up, running and adjusting ad campaigns; the ad spend itself is billed separately.
- Reporting. A monthly report with reach, engagement, follower growth and, if ads are running, cost per lead.
Every one of these is real work, and every one of them costs money whether or not you use it.
The question this page answers is which of the six you actually need, because the price tracks the count.
If you already know you want a company and are choosing between agencies, productized services, freelancers and software, the companion page covers the four kinds of social media marketing company and what each costs; this page stays on whether you need an agency at all and what one costs.
How much marketing agencies charge, by shape
Agencies price in three ways, and the shape tells you a lot about the agency.
Monthly retainer. The common one for small business.
A typical range is $1,500 to $5,000 a month for a social-only agency, and $2,500 to $10,000 for a digital marketing agency that also runs search, email and your website.
A freelance social media manager is typically $500 to $1,500 a month; a local freelancer who calls themselves an agency and adds strategy or replies often quotes $1,000 to $2,000.
Project fee. A launch, a rebrand or a one-time campaign, quoted as a lump sum, often $3,000 to $15,000 depending on scope.
Useful when the work has an end date.
Percentage of ad spend. Common when ads are the main work; ten to twenty percent of spend is typical, sometimes with a minimum monthly fee.
This shape rewards the agency for spending more, so read the minimum carefully.
All three ranges are typical quotes, not a study, and they move with your city and your industry.
Three written quotes at the same scope will tell you more than any published range.
Who does the work: the decision table
The right axis is not price.
It is who decides what to post, who writes it, who checks it and who publishes it.
Price follows from that.
| Option | Monthly cost | Who decides and writes | Who checks and publishes | Ads, replies, campaigns | Best for |
|---|---|---|---|---|---|
| Do it yourself with a scheduler (Meta Business Suite is free; others, price on vendor site) | $0, or price on vendor site | You | You | You, if at all | Owners who enjoy posting and have three hours a week for it |
| Software from your website (Boomp Packs) | $9 | The software, from your site | You, by email link; nothing connected | Not included | Owners who will post themselves but never want to write again |
| Software from your website (Boomp Core) | $39 | The software, from your site | You approve in the app; Boomp publishes | Not included | Owners who want the recurring posts handled and will approve each post in the app |
| Productized posting service ($99 Social, Socinova) | $99 to $500 | Their team, from your brief | Their team; Socinova lets you approve or edit before publishing, $99 Social's approval step is on its site | Not on either pricing page; Socinova's top two tiers add a monthly strategy consultation | Owners who want a human writing to a brief at a fixed post count |
| Software with a person approving (Boomp done-for-you) | $275 | The software, from your site | Boomp's founder approves; Boomp publishes | Not included | Owners who never want to open the app |
| Freelance social media manager | $500 to $1,500 | A person, from your briefing and photos | You approve; they publish | Replies usually; ads sometimes | Owners who want one human they can text, and can supply media each month |
| Social media marketing agency | $1,500 to $5,000, plus ad spend | A team, with strategy | Agency, with your sign-off | Yes, this is the reason to hire one | Businesses running ads, campaigns or launches, or with comments that need same-day answers |
| Digital marketing agency | $2,500 to $10,000, plus ad spend | A team, across search, email, web and social | Agency | Yes, across channels | Businesses whose growth depends on search and paid channels together |
Freelancer and agency figures are typical quoted ranges, not a survey.
$99 Social's plan was read from its site on September 13, 2026: $99 a month for ten posts on one channel, $10 a month per extra channel, billed month to month with at least seven days' notice to cancel.
Socinova's plans were read from its pricing page on September 16, 2026: $99 Trial for twelve image posts, $199 Standard for twelve image posts plus two reels or videos, $349 Advanced for twenty image posts plus four reels, and $500 Growth for thirty posts plus four reels.
Every Socinova plan includes an account manager, a monthly content calendar and an approve-or-edit step before publishing; Advanced and Growth add a monthly strategy consultation and analytics.
Plan builders change; confirm on the vendor's page before deciding.
Do you need one at all? A short test
Answer five questions before you take a single agency call.
- Will you spend money on ads in the next six months?
- Is there a launch, an opening or an event with a date on it?
- Do customers book or buy through comments and direct messages?
- Can you say in one sentence who you are talking to and what you want them to do?
- Is the real problem that nobody has posted in six weeks?
Yes to any of the first three: a person earns a retainer, and the next section says which kind.
No to the fourth: buy one month of strategy, then decide whether to keep them for the posting.
Yes only to the fifth: you do not need an agency, and the section after the next one covers what does that job.
When an agency is the right buy
Four situations make the retainer worth it, and none of them is "we should post more."
You are running paid ads.
Ad platforms are a full job: audiences, creative testing, budgets that need moving every week, a landing page that has to convert.
A bad month of self-run ads costs more than the agency fee.
If ads are the plan, hire the people who do it daily.
You have a campaign with a date.
A grand opening, a product launch, a seasonal push, an event.
Campaigns need a creative idea, a sequence of posts that build, and someone watching the numbers while it runs.
Software does not do campaigns, and a freelancer may not have the bandwidth.
Your comments and messages are the business.
A restaurant, a salon, a clinic or a shop where people book by direct message needs someone answering within the hour.
Community management is people work, priced like it.
You do not have a strategy and you know it.
If you cannot say who you are talking to and what you want them to do, a good agency's first month is worth the fee for that answer alone.
You can then decide whether to keep them for execution.
If none of the four describes you, keep reading.
When you do not need one
Most small businesses that search for an agency are not in the four situations above.
They are in this one: the accounts exist, nobody has posted in six weeks, and the owner feels bad about it.
That job is publishing two or three posts a week about what the business already does.
Your services, your process, the questions customers ask, the neighborhoods you serve, the reviews you have earned.
All of that is already written on your website.
Software that reads the website and writes the posts now covers that job, from $9 a month.
The table above shows where that sits against the typical freelancer and agency ranges.
Here is one such post, written by Boomp from a listing agent's own website, shown without her name.
No agency briefing produced that.
Her website did, because it talks about lakefront property.
That is the test to hold any option to: could this post run unchanged for the competitor down the street?
If yes, you paid for a library or a brief, not for your business.
The mixed shape most small businesses land on
The cheapest version of the agency result is usually two purchases instead of one.
Software handles the baseline.
Twenty posts a month about your services and your answers, written from your site, published after you approve them, for $39.
A person handles the parts that need a person.
A freelancer on a small retainer for replies and the occasional campaign, or an agency on a project fee when a launch comes around.
Because the recurring content is already made, the person's scope shrinks and so does the price.
Agree on one thing up front: who approves what, and on which days each of you publishes, so the calendar never doubles up.
How to spot the best social media marketing agency for a small business
The best social media marketing agency for a small business is not the biggest or the one with the nicest deck.
It is the one that answers six questions plainly, in writing, before you sign.
- Show me a real month from a real client, with the posts and the numbers, not a highlight reel.
- Who writes the posts, and who reads each one before it publishes?
- What is the post count, the channel count and the response time on comments, in writing?
- Is ad spend inside the fee or on top, and who owns the ad account if we part ways?
- Who owns the content and the social accounts when the contract ends?
- What is the notice period, and why is it longer than a month if it is?
An agency that answers all six plainly is worth a second call.
One that answers with a deck is telling you something.
What stays with you, whoever does the work
Three things no agency, freelancer or software should take off your plate.
Claims about results, health, money or safety.
A medical practice, a lender, a lawyer or a contractor has rules about what can be said in public.
Whoever writes the post, you carry the check, so agree on a flag-before-publish list on day one.
Perishable facts.
Prices, hours, a promotion end date, a staff member who left.
Tell whoever is posting the moment these change; a scheduled post does not know.
Permissions.
Customer photos, testimonials, another business's logo.
Get the yes in writing before it appears in a post with your name on it.
The three doors at Boomp
Every Boomp option starts the same way: the software reads your website and writes posts about your business, caption and image.
The price follows how much of the job you keep.
- Packs, $9 a month.
Ten finished posts by email link.
You post them.
Nothing to connect.
- Core, $39 a month.
Twenty posts, one carousel and one video, published to your connected channels after you approve each one in the app.
- Done for you, $275 a month.
The same twenty posts, carousel and video.
Boomp's founder approves them.
You never open the app.
It is not an agency: no ads, no replies, no photo shoots, no strategy calls.
No contract on any of the three.
Channels include Facebook, Instagram, LinkedIn, TikTok, Google Business Profile and four more.
What Boomp does in place of an agency, and what it leaves for a person, is laid out on the agency alternative page.
Before any of that, the free door: ten finished posts made from your own website, with a carousel and a short video, no email, account or card, so you can read the writing against your own site before you pay an agency or anyone else.
