Type “how much should I spend on marketing” into Google and you’ll get the same tired answer everywhere: 5-10% of revenue.
Cool. Thanks. Very helpful. Now go build a business plan around that.
Here’s the problem. That number is real, it’s not made up, but it’s also close to useless on its own. A plumber in Dallas and an HVAC company in rural Ohio could both “correctly” spend 8% of revenue on marketing and get completely different results. One might be thriving. The other might be lighting money on fire.
In 2026, contractors don’t need another rule of thumb. They need to understand what’s actually driving that number for their business. So let’s break it down properly.
The 5-10% Marketing Budget Rule (and What It Gets Wrong)
What people think: There’s a magic percentage, and if you hit it, growth follows.
What’s actually true: The percentage means nothing without context. A company with tight operations can spend less and grow faster than a competitor throwing more money at ads with a leaky, disorganized operation underneath it.
Marketing doesn’t fix a business. It amplifies one. Spend more on marketing when your operation is a mess, and you’re just paying to find out faster how many customers you can disappoint.
Generally speaking, 5-15% of revenue is a normal range for contractors, and even the U.S. Small Business Administration recommends 7-8% as a baseline for small businesses. But the real number depends on four things happening inside your business, long before an ad ever runs:
1. Booking Rate
The higher your booking rate, the fewer leads you need to keep your schedule full. If your team is bad at converting calls into booked jobs, you’re not just losing jobs. You’re making every lead you do pay for less valuable. This is table stakes before you touch a marketing budget.
2. Tech Conversion Rate
How often does your technician turn a completed job into a sale? A higher in-home conversion rate means more revenue from the same number of leads, which makes your marketing ROI look better without spending an extra dollar.
3. Average Ticket
The bigger your average sale, the more revenue each job generates, and the better your marketing spend looks on paper. This is also why the “right” percentage varies so much by trade (more on that below).
4. Customer Nurture and Retention
There are only two ways to grow a company: find new customers, or get your existing customers to spend more with you. Consistent email marketing to your existing customer base is one of the cheapest, highest-ROI ways to pull that second lever. Most contractors pour everything into the first one and completely ignore the second. That’s a mistake, and it’s one of the most overlooked levers in this entire conversation.
Get these four dialed in, and your marketing budget starts working a lot harder than a bigger number ever could.
Why the “Right” Number Changes by Market and Trade
Budget percentage isn’t one-size-fits-all, even within the same industry.
Market size and competition matter. A plumber competing against multiple $100M shops in Dallas needs to spend more just to get noticed. A contractor in a smaller market with fewer competitors can often win organic attention without spending nearly as much.
Trade matters too. Here’s how it typically breaks down:
| Trade | Average Ticket | Budget as % of Revenue | What That Means in Dollars |
| Plumbing | Smaller | Higher percentage needed to grow | Lower total spend, but a bigger slice of revenue |
| HVAC & Roofing | Larger | Percentage looks smaller | Often more actual dollars, since there’s more revenue to work with |
| Electrical | Middle | Varies | Depends on the specific services and pricing model |
Plumbers typically have smaller average tickets, so they often need to spend a higher percentage of revenue to grow. HVAC and roofing companies usually have bigger tickets, so their percentage looks smaller — but they’re often spending more actual dollars because they have more revenue to work with. Electrical tends to land somewhere in the middle, depending on the specific services and pricing model.
This is exactly why copying a number from a contractor in a different market, different trade, and different pricing structure is a bad idea. More on that next.
The Most Dangerous Number in Contractor Marketing
Here’s the most common mistake: contractors borrow a budget number from someone else’s business.
Maybe it’s a contractor friend in a different market. Maybe it’s an influencer throwing out a “ballpark” figure in a video. Either way, it’s dangerous, because that number was never built for your business. It doesn’t account for your gross profit, your overhead, or your net margins. Pricing for HVAC systems in Southern California isn’t close to pricing in the Midwest. A generic number from a stranger on the internet can’t know that.
When a contractor says “marketing is too expensive,” it’s almost always one of three real problems:
- Their pricing doesn’t account for marketing costs in the first place.
- Their team isn’t booking calls well.
- Their team isn’t selling well in the home, which tanks average ticket and kills ROI.
None of those are marketing problems. They’re operations problems wearing a marketing costume.
A Real Example: 2.5% Marketing Spend, 50% Growth
Here’s a story instead of a theory.
While leading marketing at a residential service company, the team spent 2.5% of revenue on marketing and still grew 50%+ year over year for three straight years.
That number surprises people — until you see what was happening underneath it. The focus wasn’t “spend more.” It was operational excellence:
- Obsessing over dispatching efficiency to cut windshield time
- Becoming the most recognizable, most talked-about contractor in a market of 12,000 people
- Relentlessly tracking and improving booking rates
- Training technicians on sales and technical skills, twice a week, every week
- Treating the customer in front of the team as the most important customer, every time
- Becoming a review-generating machine with consistently glowing 5-star service
- Sending thank-you gift cards after service
- Leaving yard signs and truck presence in the neighborhood
- Sticking magnets and stickers on systems, so if that homeowner ever moved, the new homeowner became a customer too
That 2.5% wasn’t a magic number. It was the result of a business built to make every marketing dollar go further.
The Budget Mistake Even Good Contractors Make
Here’s the part that surprises people: this mistake doesn’t come from the cheap, penny-pinching crowd. It comes from operators who have everything else dialed in.
They get their booking rates strong, their tech conversion up, their average ticket healthy — and then they stop increasing their marketing budget, even when the return is still there.
If every $1 you put into marketing brings back $15, why would you stop at your current spend? As long as the return holds, pouring more in is just good math. Some contractors genuinely don’t want to grow bigger, and that’s a fair choice. But for the ones who do, this is often the single biggest growth lever left on the table.
How to Actually Calculate Your Marketing Budget
Stop asking “what percentage should I spend.” Start asking “do I know my numbers?”
If you don’t know your booking rate, your tech conversion rate, your average ticket, and how well you’re keeping in touch with past customers, you’re not budgeting — you’re throwing darts at a dartboard and hoping you hit your revenue goal.
Once you know those numbers, you can reverse-engineer exactly how many calls and leads you need to hit your goals. That’s when a marketing budget stops being a guess and starts being a plan.
Where the Marketing Dollars Actually Go in 2026
Once your operations can support real growth, spreading your budget across the right channels matters more than ever in 2026. SEO isn’t just Search Engine Optimization anymore. It’s Search Everywhere Optimization. Contractors need visibility across traditional SEO, AI platforms like Perplexity, Claude, ChatGPT, and Gemini, social media, and even Reddit and Facebook groups, which now regularly show up on page one of Google.
A strong Google Business Profile is often the highest-leverage piece of that mix, since it’s usually the first thing a potential customer sees. Paid channels like PPC can accelerate growth once your booking and conversion rates can handle the volume. And behind the scenes, automation and a well-built website make sure none of those leads slip through the cracks once they show up.
Building a Marketing Budget You Can Actually Trust
There’s no universal percentage that works for every contractor. There’s only a business that understands its own numbers, fixes what’s broken internally, and then funds growth with confidence instead of guesswork.
Fix the operation. Know the KPIs. Then fund growth with confidence. And if you’d rather not figure out the channel mix alone, speak with our team at Relentless Digital and we’ll help you build a budget around your actual numbers.
