How to set a marketing budget when you've never had a real one
Founders set marketing budgets by copying a percentage of revenue, a number built from nothing about their business. Derive the real figure from three constraints: where your bottleneck sits, what a customer is worth, and what your cash can survive.
By Stacey Tallitsch | June 2, 2026
Your banker asked for next year's budget, and the line that stopped you was marketing. You have spent money on it before. A few thousand a month to a contractor, a trade show booth, some Google Ads a nephew set up, a logo refresh that felt overdue. None of it was a budget. It was a series of reactions. Now someone wants a single annual number written on a plan, and the only guidance you can find online is a percentage of revenue. Seven percent. Eight. Ten if you are growing. You pick the one that sounds responsible, multiply it against last year's top line, and write it down. That number is almost certainly wrong, and the reason it is wrong is that it was derived from nothing about your business.
A marketing budget is not a percentage. The percentage is what you can calculate after the fact, once the real decisions are made. Quoting it as a starting point is like setting your hiring plan by the average headcount of every company your size. The average describes a crowd you have nothing in common with.
Here is the proof, and it comes from the people who sell the percentages. The most recent Gartner CMO Spend Survey found that marketing budgets have flatlined at 7.7% of company revenue for the second year running. Read past the headline. Half of those marketing leaders reported budgets of 6% or less. The survey splits the field between budget-conscious companies spending under 4% and big spenders running above 10.5%. That is not a benchmark. That is a range so wide it contains its own opposite, sitting on top of companies at the same revenue line making completely different bets. The 7.7% is the arithmetic mean of those bets. It tells you what other people decided. It cannot tell you what you should decide, because it carries none of the inputs that produced any individual number inside it.
So throw out the percentage and derive the budget the way you would size any other capital decision. Three questions, in order.
First, find the constraint
Before you ask how much to spend acquiring customers, ask whether more customers is the thing standing between you and more revenue. For a lot of founder-led businesses, it is not.
If your crews are booked three weeks out, if your delivery team is the bottleneck, if you are already turning down work or quoting long lead times to slow demand, then marketing is not your binding constraint and a bigger acquisition budget makes the problem worse, not better. You would be paying to generate demand you cannot serve, which shows up as longer waits, slipped jobs, and customers who booked you and then watched you fail to show. I have written before about how capacity-constrained operators should cut marketing rather than ramp it, and the budgeting version of that argument is simple. When capacity is the constraint, the marketing budget is a throughput question, not a volume question. You are not buying more leads. You are buying better leads, the ones that convert to higher margin per unit of the thing you actually run out of.
If you are genuinely demand-constrained, more qualified buyers really would turn into more revenue, then the budget question is live and you move to the next two steps. Most founders skip this check because the percentage rules skip it. The rules assume every dollar of marketing converts cleanly into growth. Your business is not an average. Find out which side of the constraint you are on before you size anything.
Second, build the budget out of unit economics, not revenue
A marketing budget multiplied against revenue is a number wearing a costume. The real inputs are two figures most founders cannot state without checking, and the act of finding them is more valuable than the budget itself.
The first figure is what a customer is worth to you, measured as margin over the life of the relationship, not the size of the first sale. A roofing customer who refers two neighbors over three years is worth a multiple of the single job on the invoice. A managed services client on a recurring contract is worth far more than the same logo bought as a one-time project. If you size marketing against the first transaction, you will systematically underspend on the customers who compound and overspend on the ones who never come back.
The second figure is what it currently costs you to acquire one customer. Not cost per lead, not cost per click. Cost per customer who paid you. Take everything you spent last year to get business in the door, the contractor, the ads, the booth, the sponsorships, and divide it by the number of new customers you can actually trace to those efforts. The number will be rough and it will probably embarrass you. That is fine. Rough and real beats precise and imaginary.
Those two figures set your bounds. If a customer is worth $4,000 in margin and currently costs you $400 to acquire, you are not overspending on marketing, you are underspending, and the budget should rise until that ratio compresses to the point where the next dollar stops paying. If a customer is worth $900 and costs you $850 to land, no percentage of revenue will save you, because the problem is not the size of the budget. It is the economics underneath it, and that is frequently a pricing problem wearing a marketing costume. The percentage rules cannot see any of this. They operate one level above the only numbers that matter.
Third, set the budget your cash can actually survive
The third constraint is time, and it is the one that turns a defensible-looking budget into a cash crisis. Marketing spend and the revenue it produces do not arrive in the same month. You pay in January and the customer signs in April. The gap between the dollar going out and the dollar coming back is the payback window, and a budget the business cannot fund across that window is a fantasy number no matter how good the unit economics look on paper.
This is where founders get hurt. The math says spend more, the unit economics say every dollar pays back 4 to 1, so they commit to an aggressive annual figure and then discover in month three that the payback lands in month six and the working capital ran out in month four. The budget was not wrong in the abstract. It was wrong for the cash position. Size the budget to the slowest payback you can survive, then grow it as the returns come in and prove themselves, not before. A budget that compounds with results is durable. A budget set to a target on a spreadsheet is a bet you placed before you saw any cards.
What the percentage actually measures
Here is the turn, and it changes what you do tomorrow. The founder who walks in asking "what percentage should I spend" has the wrong question, and the people who answer it confidently are selling the certainty, not the answer. The right question has three parts: how much, against which constraint, recoverable in what window. Answer those and the percentage falls out the bottom as a result. You will be able to calculate it after the fact, and it will be yours instead of a stranger's average.
And if you cannot answer the second question, if you genuinely do not know what it costs you to acquire a customer today, then your first marketing dollar should not buy more marketing. It should buy instrumentation. A founder who scales spend without knowing their acquisition cost is pouring water into a bucket without knowing whether it has a hole. The disciplined move is to spend the first money making the current spend legible, even though instrumentation feels less satisfying than launching a campaign. This is the same reason a dashboard full of rising metrics can sit on top of flat revenue, the numbers measure activity while the business measures cash. You cannot budget against physics you cannot see.
Do one thing before you close this tab. Pull last year's spending and count, honestly, how many new customers you can actually trace to marketing. Divide the spend by that count. Hold the result next to the margin a customer is worth to you over the time they stay. That single ratio tells you more about next year's budget than any percentage benchmark ever printed, because it is built from your numbers instead of the average of everyone else's. If the ratio says spend more, spend more. If it says you cannot even build the ratio yet, you just found out what the first money is for.
— Stacey Tallitsch, Stronghold CMO
About the Author
Stacey Tallitsch is the President of Stronghold CMO, a Fractional AI CMO service operating under Talisman Capital, Inc. He is a 30-year tech veteran and the author of 21 books on systems thinking, operator-grade decision-making, and personal sovereignty, with more than 30,000 students across his Udemy course catalog.