How Much Does Digital Marketing Cost a Small Business?

Every useful answer to this question starts with the gross profit left on a booked job after materials, labor and getting the crew there. Revenue flatters the math, and gross profit is the money you can actually spend on finding the next customer. If you've never written that number down for your top three services, the job profit calculator walks through it in a few minutes.

Two more numbers finish the picture. The first is your close rate: out of every ten estimates or quotes you give, how many turn into signed work. The second is how many of your leads reach the estimate stage at all, since calls that never get answered and forms nobody follows up on quietly raise the price of every job you do win. Pull both from your CRM or your call log for the last three months, because a guess here moves the budget by thousands. If the vocabulary is new, the plain guide to what digital marketing covers lines up the channels those leads come from.

Here's the arithmetic for a higher ticket trade, with every assumption labeled so you can drop your own numbers in.

• Say your average booked job leaves $4,000 in gross profit.
• Say you close 1 in 4 of the estimates you run.
• Say 3 in 5 of your leads turn into an estimate that actually happens.
• Say you want 5 extra jobs a month.
• Say you'll hand marketing 20 cents of every gross profit dollar those jobs bring in.

Five jobs at a 1 in 4 close rate means 20 estimates. Twenty estimates at 3 in 5 means about 34 leads a month. Those five jobs carry 5 times $4,000, so $20,000 in gross profit, and 20 cents on the dollar of that is $4,000 a month for everything together: fee, ads, tools and content. Divide $4,000 by 34 leads and your ceiling is roughly $118 a lead.

Now run the same steps for a lower ticket trade. Say a booked job leaves $300 in gross profit, you close 4 in 5 of the quotes you give, 7 in 10 of your leads reach a quote, you want 40 extra jobs a month, and you'll spend 15 cents of every gross profit dollar. That comes to 50 quotes, about 72 leads, $12,000 in gross profit and an $1,800 monthly budget, with a ceiling near $25 a lead. Same method, two budgets that differ by more than double, which is exactly why a percentage borrowed from another company tells you so little. The walkthrough on building a lead budget from contribution and close rate goes deeper on where each input comes from.

Once you have a monthly number, the next job is splitting it. Most proposals mix these four lines together, and the mix is where owners lose track of what they're buying.

A quote that gives you one number a month can still be a fair deal, as long as somebody can tell you how it breaks down. When a proposal keeps the split vague, the usual reason is that the ad spend inside it is smaller than you'd assume.

Ad spend behaves differently from the fee because the platform meters it for you. In Google Ads you set an average daily budget per campaign, and Google's help page on average daily budgets spells out two ceilings: “Your daily spending limit (two times your average daily budget for most campaigns) on any particular day” and “Your monthly spending limit (30.4 times your average daily budget for most campaigns) in any particular month.”

So multiply any daily figure by 30.4 before you agree to it. A $50 daily budget is about $1,520 a month at the ceiling, and a $100 daily budget is about $3,040. Owners who budget $50 a day as “about $1,500 a month” are close enough, and owners who budget it as $1,200 will be short every month. For splitting the total across campaigns and seasons, the guide to planning a Google Ads budget for a service business covers the moving parts.

Tools renew on their own schedule, which is how a tidy budget drifts. Call tracking, a CRM, a scheduler, an email platform, hosting and a rank tracker each look small, and together they often match a month of ad spend. Keep one list with the vendor, the monthly amount, the renewal date and whose name the account is in, and review it twice a year. Dropping two tools nobody has opened since spring pays for a week of ads.

Content is the line people buy by the unit, and unit pricing is where the money goes sideways. Google's page on creating helpful, reliable, people first content puts it this way: “If the 'why' is that you're primarily making content to attract search engine visits, that's not aligned with what our systems seek to reward.” Buying twenty articles a month because the proposal said twenty is a bet against that guidance. Pay instead for the pages a customer reads before calling you, such as the service page for the job you actually want, the pricing explanation, the photos of your own crews and the answers your phone gets asked every week.

Part of the first year gets spent before a single ad goes live, and leaving it out of the plan is an easy way to run short by the second quarter. A website that states what you sell, where you work and how to reach you is the foundation every channel points at, and the breakdown of how to compare a website quote explains which build costs are one time and which recur.

Tracking is the other setup cost, and it's cheap compared with running blind for a year. Google Ads conversion tracking exists so you can “Understand your return on investment (ROI) and make better informed decisions about your ad spend,” according to Google's page on conversion measurement. On the analytics side, Google's page on key events defines one as “an event that measures an action that's particularly important to the success of your business,” which for most local companies means a call, a form and a booking request. A Business Profile belongs on the setup list too: Google's representation guidelines say that “If your business either has a physical location that customers can visit, or travels to customers where they are, you can create a Business Profile on Google.” That channel costs hours of somebody's attention every month, so budget the hours the same way you budget the dollars.

A budget is a guess until the first full month closes. Add up everything you spent on the fee, the ads, the tools and the content, then divide by the jobs that actually got booked from it. That figure is your cost per booked job, and it's the only one worth arguing about in a monthly call. The case for measuring cost per booked job explains how to tie each booking back to the channel that produced it.

Compare that cost against the gross profit you started with. If a booked job leaves $4,000 and costs $900 to win, you have room to raise the budget and take more of the market. If it costs $3,400, the fix is usually the close rate or the speed of the follow up, and spending more on ads makes the hole bigger. Give a new channel 90 days before you judge it, since the first month is mostly setup and the numbers only settle around the third.

Write down three numbers before you talk to anybody: the gross profit on your most common job, your close rate on estimates, and how many extra jobs a month you want. That's enough to turn any proposal into a question you can answer, because you'll know within a minute whether the lead price it implies fits under your ceiling. Seasonality matters too, and the guide to planning a seasonal marketing budget shows how to move the money toward the months when your phone rings.

When you're ready to test the number, the lead cost calculator takes your close rate and job value and shows what a lead can cost you before the work stops paying for itself.