Social Media Software vs an Agency: The Real Maths
Comparing £29 a month against an £850 agency retainer looks like an easy decision, right up until you price in the hours you'll spend staring at a blank caption box. Here's the honest sum, including the line item nobody writes down, and the two questions that actually decide which way it falls.
Dave Smith
# Social Media Software vs an Agency: The Real Maths
Here's the thing about comparing social media software to hiring an agency: almost everyone does the sum wrong. They put £29 a month next to £850 a month, decide the answer is obvious, and then wonder six weeks later why the cheap option feels like it's costing them a fortune.
So let's do the maths properly. Not the marketing version — the actual version, with the awkward numbers left in.
What an agency actually costs
UK social media retainers for small businesses generally land between £600 and £2,000 a month. At the lower end you're typically getting a junior account handler managing a handful of clients, posting two or three times a week across two platforms, with a monthly report. At the higher end you get strategy, proper photography, paid ad management, and someone who answers the phone when a customer kicks off in your comments at 4pm on a Friday.
Call it £850 a month as a fair middle. That's £10,200 a year. Add VAT and you're at £12,240.
Freelancers sit lower — £300 to £800 a month is common — but the trade-off is capacity. One person, one holiday, one bout of flu, and your feed goes quiet.
Then there's the bit that never appears on the invoice: onboarding time. Any agency worth paying will need three to five hours of your time in the first month, and an hour or two monthly after that, for approvals, feedback, and answering "what's happening in the business this month?" That's real time, and you're still paying the retainer.
What software actually costs
Social media management tools range from around £12 a month for basic scheduling to £60 or more for platforms with analytics, approvals and multiple users. Aunty Social sits at £29 a month, which is £348 a year.
Set against £10,200, that looks like an easy win. But the software price is only the first line of the sum, and this is where most comparisons quietly stop.
The line item nobody writes down
Scheduling tools schedule. They don't decide what to say.
If your tool is a calendar with a posting function, you're still doing the thinking, the writing, the image sourcing and the caption edits. Realistically that's two to four hours a month to produce a decent fortnight's worth of content, assuming you know what you want to say. For most owners it's more, because the writing isn't the slow part — the staring at a blank box wondering what on earth to post is the slow part.
Now put a price on your own hour. If you're a tradesperson billing £45 an hour, three hours a month of content work is £135 of unbilled time. Add the £29 subscription and your "cheap" option is £164 a month, or £1,968 a year. Still a fraction of the agency, but not the number on the pricing page.
And if you're the owner of a business turning over decent money, your effective hourly rate is probably higher than you'd like to admit. Do that sum honestly and some software setups stop looking cheap at all.
This is the actual comparison. Not £29 vs £850. It's £29 plus your time vs £850 plus a bit less of your time.
Where the maths tips
Two questions decide it, and neither is about budget.
Does the tool remove the thinking, or just the posting?
A tool that hands you an empty calendar has saved you the five minutes of opening Facebook. A tool that knows what your business does and drafts content in your voice has saved you the two hours of deciding what to say. Those are wildly different products at similar prices, and the difference is worth far more than the £15 gap between them. When you're comparing tools, ignore the feature list and ask what arrives in your account on a Monday morning if you do nothing at all.
Is social media a channel or a campaign for you?
If you need consistent presence — proof you exist, proof you're active, answers to the questions customers keep asking — that's a channel. Channels want reliability and low cost, which is exactly what good software does well.
If you need a product launch, a rebrand, a recruitment drive or £2,000 a month of ad spend managed properly, that's a campaign. Campaigns want judgement, and judgement is what you're actually buying from an agency. No tool will tell you your positioning is muddled or that your offer isn't landing.
The bit that isn't in the spreadsheet
Agencies come with accountability. Someone else has a deadline and a reputation, and things happen without you chasing them. That's genuinely valuable, and if you've spent two years meaning to sort your social media out, it might be the only thing that actually works.
Software comes with control. You keep the account, the voice, the customer relationships and the knowledge. Nothing walks out of the door when a contract ends — and agency churn is real, especially at the lower price points where account handlers move on every eighteen months.
So what's the honest answer?
For most SMEs turning over under half a million, the maths favours software with a strong content engine, plus an agency or freelancer brought in for specific projects — a launch, a website refresh, a proper photo shoot twice a year. You pay for judgement when you need judgement, and pay pennies for consistency the rest of the time.
For businesses where social media is a genuine sales channel with real budget behind it, an agency retainer earns its keep, and trying to run it off a £29 tool and your own evenings is a false economy.
The wrong answer is the one plenty of businesses land on by default: paying for a scheduling tool, never using it, and calling that a cost saving. That's £348 a year for a feed that hasn't moved since March, which is the worst maths of the lot.