DIY vs hiring: what running your own ads really costs

DIY marketing has one number everyone loves: zero. No management fee, no retainer, no invoice. You run the ads and pocket the difference. Except zero is the most expensive number in small business, because it hides three costs that never hit a card statement: the tools you rent, the hours you burn learning and tending, and the slice of every pound that leaks while you figure it out. Add those up honestly and “free” often costs more than a fee. Here is the real maths, both ways, and the honest line where DIY still wins.

The DIY price tag that isn’t on the tin

Before you buy a single click, running your own ads properly costs money every month. You need a keyword research tool to find what people search, and call tracking so you know which ad made the phone ring. Skip those and you are guessing. A realistic tool stack runs £100 to £150 a month: £80 to £120 for keyword research, £30 to £50 for call tracking. That is £1,200 to £1,800 a year.

Your time has a price, so put one on it

Your time is the most expensive input you have, and the one nobody puts on the invoice. If you bill a customer £75 an hour, that is what an hour of your evening is worth, written down or not. A real account needs 8 to 12 hours a month of tending: search-term audits, negative keywords, bid tweaks, ad testing. At £75 an hour, 10 hours is £750 a month of your own time, spent at midnight when you should be sleeping or selling.

The beginner leak nobody prices in

Every account leaks, but a beginner account leaks hardest: broad match left on, no negative keyword list, Search Partners spending your budget on junk. A self-run account in its first year commonly loses 20 to 40 percent of spend to searches that were never going to book. On £1,500 a month, a 30 percent leak is £450 gone every month while you learn. And the learning curve is itself a cost: the months you spend getting good are months a competitor books the jobs you are paying to chase.

DIY vs agency, all-in

Here is the honest side by side for a business spending £1,500 a month on ads. The spend is the same either way, so it is left out: this is the cost of running the ads, not the ads themselves.

The fee you were avoiding turns out to be the cheap part. What actually costs you is your time and the leak, exactly what a competent account removes. One-time tracking setup (£650) sits on the agency side in month one, then disappears, and it is what shrinks the leak from 30 percent to 10. We break the numbers down in 5 ways a marketing agency actually saves you money.

When DIY genuinely wins

Be honest: DIY is not always a mug’s game. Below roughly £1,000 a month in spend, the leak is small in absolute pounds and a full fee is a big slice of a small budget. With genuine time and interest, doing it yourself, or buying one hour of a consultant at £110 to check your setup, is often the right call.

The same £1,500, two ways

So which is cheaper for you?

Add it up for your own numbers. Take what you charge per hour, the hours you spend, your tool bill, and an honest 20 to 40 percent leak, then compare it to a flat fee. Under £1,000 a month with time to spare, keep doing it yourself. Above that, “free” is usually the expensive option, and a flat fee lands cheaper all-in once you count the hours and waste it removes.

If you would rather aim the budget than spray it, we run Google Ads and Local Services Ads with tracking built in and no long contracts, so you can leave the month you stop seeing value.

Still weighing it up? Read whether an agency is worth it for a small local business and the five ways an agency actually saves you money. When you want a straight answer on your own numbers, request a free proposal and we will tell you honestly whether DIY is still your cheaper option.