Marketing Budget: How Much to Spend and How to Split It

In short: large companies spend an average of 7.8% of revenue on marketing in 2026 according to Gartner, and between 7% and 12% depending on their business model according to The CMO Survey. For a small business those averages are a guardrail, not a target: the right budget is calculated backward, from the customers you need, the leads it takes to get them, and the cost of a lead on each channel.

A marketing budget is not an allowance you spend until it runs out. It is a commitment with numbers attached: with this many dollars we expect this many customers, and on this date we will know whether the assumption held. Here is how to build one that you can defend to a partner, a lender or yourself.

What percentage of revenue should go to marketing?

Two surveys are quoted everywhere, and both mostly cover large North American and European companies.

Gartner’s 2026 CMO Spend Survey (401 marketing leaders in North America, the UK and Europe, fielded January to March 2026) puts marketing budgets at 7.8% of company revenue, up from 7.7% in 2025. Gartner itself calls that flat. A 0.1 point rise is a relative increase of only 1.3%, which you can check with a percentage increase calculator. The same survey found that 56% of CMOs said they lacked the budget to deliver their 2026 strategy.

The CMO Survey (Duke University, Deloitte and the American Marketing Association), Spring 2026 edition, breaks spending down by business model:

Business model	Marketing budget as % of revenue
Consumer products (B2C)	12.0%
Business services (B2B)	10.1%
Consumer services (B2C)	7.2%
Business products (B2B)	7.0%

These figures include staff, agencies, software and media. A local accounting firm that grows through referrals will usually spend far less. A new consumer brand that has to build awareness from zero will often spend more.

The U.S. Small Business Administration does not set a percentage either. Its guidance notes that many businesses use a share of revenue (projected revenue for a startup), that B2C companies generally need bigger budgets than B2B ones, and that newer businesses need more while they build awareness. That is the honest answer: the percentage is a starting point, and your own numbers should replace it as soon as you have them.

How do you build a budget from your goals?

The objective-based method starts from what you want to get. It fits in four lines:

1. New customers targeted over the period.
2. Leads needed = target customers ÷ lead-to-customer conversion rate.
3. Acquisition budget = leads needed × cost per lead on each channel.
4. Total budget = acquisition budget + software + production + time.

Example: a 12-person engineering consultancy. It wants 24 new clients this year. Its history shows that one lead in four signs, so it needs 96 leads. If those leads come from Google Ads at around the 2026 cross-industry average of $66.69 per lead reported by LocaliQ, the ad budget comes to about $6,400 (96 × $66.69). The firm then adds a CRM, website updates, two written case studies and one day a week of a staff member’s time. Its own cost per lead will differ from the average, which is why the first quarter of spend doubles as a measurement exercise. Our guide to Google Ads on a small budget explains how to get that figure without burning cash.

The total is then compared with the gross margin 24 clients will generate. That comparison is your expected return on marketing investment, and it is the number you check against reality during the year.

This method has one advantage the percentage method lacks: it forces you to know your conversion rate and your cost per lead. If you do not know them yet, the first budget exists precisely to measure them.

Which line items belong in a marketing budget?

A complete budget separates fixed costs, which run all year, from variable costs, which you can scale up or cut depending on results.

Fixed costs

• website: hosting, maintenance, updates;
• software: CRM, email platform, scheduling tool, design suite;
• people: employees or regular contractors (SEO, social media management);
• content production: articles, photos, video.

Variable costs

• online advertising (search, social);
• trade shows, events, print;
• promotions, including the cost of discounts;
• tests of new channels.

For outside services, thinking in days of work prevents surprises. Our breakdown of SEO pricing applies that reasoning to search engine optimization: a monthly retainer is simply a number of days multiplied by a day rate.

How should you spread the budget across the year?

An annual budget split into twelve equal slices ignores how customers actually buy. Three principles work better.

• Follow demand. A landscaper invests in spring, a gift shop in the fall. Ads cost more when every competitor bids at the same time, but that is also when customers are ready to buy.
• Plan for lead times. SEO and content take several months to produce results, so they are funded before the high season, not during it.
• Keep a reserve for opportunities and tests: a share set aside in advance, released only by a deliberate decision.

The calendar of actions should be built at the same time as the budget, so every dollar has a date and an owner.

Which hidden costs blow up a marketing budget?

Overruns rarely come from the main line. They come from what was left out.

• Internal time. One hour a day of the owner’s time on social media adds up to roughly 250 hours a year over 250 working days. Put a dollar value on it.
• Stacked subscriptions. Each tool looks cheap on its own; the annual total rarely is. Review them every quarter.
• Production. A video campaign means shooting, editing and cutting versions for each platform’s format.
• Discounts. A 20% off promotion costs 20% of the revenue on every discounted sale, including the sales you would have made anyway.
• Fees. Payment processors, booking platforms and affiliate networks all take a cut.

What budget does a new business need?

A startup has no history: no conversion rate, no cost per lead, no revenue to apply a percentage to. We found no reliable US benchmark for first-year marketing spend, so the first-year budget is mainly a learning budget, and a good moment to lay the SEO foundations of a startup. Three rules keep it from being wasted:

1. Pay first for what every channel needs: a clear website with one page per service, a complete Google Business Profile, and a simple way to track leads.
2. Test one paid channel at a time, with enough budget to collect a few dozen leads, then compare their cost with the margin you expect per customer.
3. Measure from day one. Every lead should be tied to its source. The SBA suggests the basics: ask new customers how they heard about you, use unique codes on print and direct mail, and read the analytics built into your email and ad platforms. After three months you have your own numbers, which beat any national average.

If you present a plan to a bank or an investor, show marketing on its own line with the assumption behind it: expected customers and estimated acquisition cost. That link between spend and result is what makes the budget credible. If the spend is financed with a loan, attach the repayment schedule from a loan amortization calculator: the lender will check that the payments fit within projected cash flow.

How do you track and adjust the budget?

A budget is a living document. A half-hour monthly review is enough, with a simple table by channel: planned spend, actual spend, leads, customers signed, cost per customer.

A few rules make that review useful:

• Decide before you spend what result you expect and when you will evaluate it.
• Scale what works in steps. Raising an ad budget gradually lets you confirm that the cost per customer holds at higher spend.
• Cut without regret what produces nothing after the agreed test period.
• Do not judge everything monthly. Brand and content work is measured over several quarters, not weeks.

A budget you can defend in front of a partner or a banker is not a big budget. It is one where every line is tied to a numeric goal and an indicator you actually track.