How Much Should a Small Business Spend on Advertising?

The short answer

There are two numbers, and confusing them is the most expensive mistake in this article.

Most established small businesses budget 5% to 10% of revenue for marketing — roughly 7–8% for consumer businesses and 2–5% for B2B. Newer businesses, businesses launching a new product or location, and businesses in highly competitive categories often go higher — sometimes 12% to 20% of revenue — to break through.

But that is the marketing budget, and marketing is more than advertising. The same money has to cover your website, SEO, email tools, software, agency fees and staff. The part that actually buys ads is a slice of it: Gartner puts paid media at 30.6% of the average marketing budget — about 2.4% of company revenue. Adjusted for a small business, which does not carry an enterprise's in-house marketing payroll, that slice works out to roughly 34% to 44% of the marketing budget, depending on the industry.

So the two numbers work like this:

Marketing budget = revenue × your industry rate (5–10% for most businesses)
Advertising budget = marketing budget × your paid-media share (44% consumer-facing · 39% mixed · 34% B2B)

A consumer-facing business doing $600,000 at 8% has a marketing budget of $48,000 a year — about $4,000 a month. Its advertising budget is 44% of that: $21,120 a year, or roughly $1,760 a month to actually buy ads. Plan your campaign against the $4,000 and you will over-commit by more than double, find out three months in, and cut the wrong channel.

Being straight about it: the 30.6% is Gartner's published figure, but the three tier values are our own researched estimates derived from it — the direction is sourced, the exact size is not, and we say so rather than invent seventeen precise-looking numbers.

That is the rule of thumb. It is not a law. The right number for your business depends on three things: your goal, your competition, and your margin structure.

Goal first, budget second

Before you ask "how much should I spend," answer "what am I trying to make happen?" Common goals look very different at different budgets.

Every monthly figure below is an advertising budget — money going into the channels, not the whole marketing budget. A $1,500-a-month media budget generally sits inside a marketing budget of roughly $3,400–$4,400 a month, once the website, the tools and the people are counted.

• More phone calls for a service business: usually starts at $1,500–$3,000/mo on a focused mix of search ads, retargeting, and a strong Google Business Profile.
• More foot traffic for a restaurant or retail location: $1,500–$5,000/mo on local awareness (radio + streaming audio) plus geofencing and Meta promotions tied to specific offers.
• More qualified leads for a B2B or higher-ticket service: $2,500–$7,500/mo on paid search, LinkedIn, and retargeting against a clear conversion landing page.
• Brand awareness in a defined market: a meaningful awareness campaign in a Black Hills-sized market typically requires at least $3,500–$10,000/mo across radio, streaming audio, CTV/OTT, and display to actually be heard.

If the goal demands a level of presence the budget cannot support, the campaign will under-deliver. We would rather tell you that on day one than after three months of disappointing reports.

Competition matters more than people realize

Two businesses in the same category can have wildly different ad budgets that are both correct. A solo HVAC company in a small town may need $1,200–$2,000/mo. A multi-truck HVAC operation competing against three well-funded competitors in Rapid City may need $5,000–$8,000/mo just to keep visibility steady. Both of those are advertising budgets — what lands in the channels — so the marketing budgets behind them are larger again.

The question is not "how much do I want to spend?" The question is "what does it take to be visible enough in this market to be considered?" If a competitor is buying every Google search ad, every billboard, every radio sponsorship, and you are running one Facebook ad a week, your spend is technically on the books — but functionally invisible.

Margin structure changes the math

Businesses with high gross margin (most professional services, software, dental, recovery treatment, real estate) can typically afford to spend more on advertising as a percentage of revenue. Businesses with thin margin (restaurants, retail, contractors with heavy material costs) need to be more disciplined and often need to lean on radio + email + organic Google Business Profile work to stretch dollars further.

A practical exercise: figure out the lifetime value of a customer. Then figure out what you are willing to pay to acquire one. If your average customer is worth $5,000 over their lifetime and you are willing to spend up to $400 to acquire one, that gives you the math you need to evaluate whether a campaign is working.

What "spending more" actually buys

When a business doubles its advertising budget, they are not just doubling the number of ads. They are typically getting:

• More frequency (the same audience hears or sees the message more times before deciding)
• More channels (radio + digital + retargeting instead of just one)
• More creative variation (different messages for different audiences)
• More measurement (the larger spend justifies serious analytics setup)

It is not 1+1=2. Often, increasing spend modestly produces disproportionately better results because frequency and channel coverage finally cross the threshold where the campaign becomes memorable.

A starting framework

If you are figuring out where to start, try this:

1. Take 5–10% of revenue — that is your marketing budget for the year. (The rate moves by sector; SaaS runs high, auto dealers run low.)
2. Multiply it by your paid-media share — about 44% if you sell to consumers, 39% for mixed and professional categories, 34% for B2B. That is your advertising budget: the money that actually buys ads.
3. Do not then subtract your website, software and agency costs as well. The media share has already taken them out. Subtract them twice and you will under-fund the campaign.
4. Divide the advertising budget by 12 and consider flighting — heavier spend in your busy seasons, lighter in your slow ones.
5. Weight it toward the tactics with measurable conversions — search, social, display, retargeting — while keeping a real slice for the awareness and trust channels (radio, streaming audio, CTV, sponsorships) that make the rest work harder. The exact split is an output of your goal, industry and budget, not a fixed ratio — the calculator sets it for you.

That is a starting framework — not gospel. We refine it for your business in the first conversation.

Want a real number for your business?

Skip the rule of thumb. Run the free advertising budget calculator — enter your revenue, industry, stage, and growth goal and it applies these same benchmarks (plus your market's real audience size). It shows you both numbers — your marketing budget and the advertising budget it plans against — then returns a monthly range and the channel plan to spend it on. No email required.

If you want to go deeper on the maths behind the percentage, see advertising budget as a percentage of revenue and advertising budget by industry. Brand new and have no revenue to take a percentage of yet? Start with how much a new business should spend.

Or get a free marketing plan and we will recommend a budget range tied to your specific goal, market, and competition.

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Sources: The 5-10% of revenue rule of thumb comes from the SBA; the industry-by-industry marketing rates from the CMO Survey; the paid-media share of a marketing budget — the step that turns a marketing budget into an advertising budget — from the Gartner 2025 CMO Spend Survey. See the full references page for direct links to each.