B2B marketing budget benchmarks for SMBs

You have a revenue target, a list of things marketing could do, and someone asking for one number. This is where a benchmark feels useful. Put a percentage against revenue, call it the marketing budget, and move on.

The problem is that the percentage only tells you what someone else spent. It does not tell you what your company needs to reach a particular market, whether payroll is included, or whether you are funding steady demand or trying to create a category from scratch.

A useful benchmark gives you a starting range. The budget still has to be built around the commercial job.

What credible benchmarks actually say

The Business Development Bank of Canada gives a common rule of thumb of 2% to 5% of revenue for B2B companies. Its guidance is aimed at small businesses and is explicit that the right number depends on revenue, market, and objectives.

At the other end of the company-size spectrum, Gartner's 2025 CMO Spend Survey reported an average marketing budget of 7.7% of revenue. Half of the surveyed CMOs reported 6% or less. The important caveat is that the vast majority of respondents worked at companies with more than $1 billion in annual revenue. That makes the result useful context, not an SMB target.

These sources support a broad conclusion: a B2B company commonly starts its discussion in the low to mid single digits as a share of revenue, while larger firms can sit higher. They do not support pretending that one percentage is correct for every business.

Why two companies in the same revenue band need different budgets

A company that wins through referrals and needs to make demand more predictable has a different job from a company entering a new country. A known product in a mature category has a different job from an unfamiliar service that must first explain why the problem deserves attention.

Three questions move the number more than the benchmark does:

• How much demand already exists? If prospects already search for the category, more of the budget can go toward capturing that demand. If they do not, the company must pay to become known before a form fill is likely.
• How quickly must the pipeline change? A steady plan can compound through useful content, partnerships, and consistent outreach. A hard deadline usually needs more distribution and more production capacity.
• What does the percentage include? A budget that includes salaries, contractors, software, events, and paid media cannot be compared with a media-only number.

Define the budget before comparing it

Write down what sits inside marketing. Include the people who make the plan and produce the work, the systems they use, paid distribution, events, research, and external production. If sales development or founder time is counted elsewhere, say so.

This sounds basic, but it prevents the most common budget argument. One person is discussing total marketing cost while another is discussing campaign spend. Both quote a percentage and neither is talking about the same thing.

Gartner reported that paid media accounted for 30.6% of the marketing budgets in its 2025 survey. Again, that is an enterprise-heavy sample. It is still a useful warning for a smaller company: media is only one part of the function. Buying attention without funding the message, pages, follow-up, and measurement is an incomplete budget.

Build the number from the commercial job

Start with the revenue you need from new business and work backward through your own sales numbers. Use your average first-year revenue per customer, close rate, qualified-opportunity rate, and the share of opportunities marketing is expected to influence. If those inputs are unknown, finding them is the first job.

The calculation will not produce a perfectly precise marketing figure. It will expose whether the plan and target belong in the same conversation. If the company needs a major increase in qualified opportunities but the proposed budget only covers a website refresh and occasional posts, the gap becomes visible before the money is spent.

Then split the budget into three practical parts: the team that produces and runs the work, the channels that distribute it, and the systems that show what happened. Keep enough flexibility to move money when evidence changes. A yearly budget can be fixed at the top while its channel allocation changes during the year.

Use a range, then set conditions

A sensible budget proposal is often a range with a decision attached. The lower end funds the minimum credible plan. The upper end funds faster learning, wider distribution, or a second market. State what must be true to release the next portion: a working message, acceptable conversion from a target account, or evidence that sales can follow up promptly.

Be suspicious of a budget that has no room for learning. Marketing choices are made before complete information exists. The company needs the ability to stop what is weak and put more behind what is working.

The benchmark is the opening, not the answer

For an SMB, the 2% to 5% B2B rule of thumb is a defensible place to open the discussion. The enterprise average of 7.7% shows that established marketing functions often cost more, but it should not be copied into a smaller company's plan.

The number you approve should match the pipeline job, include clearly defined costs, and come with a weekly view of what the team shipped and what moved. If you want to see what a senior fractional team costs before building that plan, review our pricing.