The 60/40 rule and why it breaks at a few thousand dollars a month.

The 60/40 rule says a business should spend 60% of its advertising budget on building the brand — getting remembered, getting recognized, getting trusted before anyone's ready to buy — and 40% on getting people to actually buy right now. It comes out of work done by researchers Les Binet and Peter Field, and it has become one of the most repeated numbers in advertising. Ask most marketing consultants how to split an ad budget and you'll hear some version of it.

The trouble starts when a business owner spending two or three thousand dollars a month tries to apply it literally. Allocating $1,200 a month to brand building doesn't do anything close to what the same ratio does for a company spending seven figures a quarter. The rule doesn't fail because brand building is a bad idea. It fails because the rule was built for a different scale of spending than most small businesses have.

What the ratio was actually measuring.

Binet and Field's original work wasn't really proposing a budgeting formula. As one analysis of the research points out, the underlying study was about two different jobs advertising does — creating demand that didn't exist versus capturing demand that already exists — and the 60/40 figure was a summary observation about how successful campaigns in their dataset tended to split spending across those two jobs, not an instruction to follow. A Medium analysis by Rajiv Gopinath puts it plainly: the heuristic 'flattened' a finding about growth mechanics into something that reads like a budgeting rule it was never meant to be.

That distinction matters because a ratio about how spending happened to split, across a dataset of mostly large, mostly UK, mostly big-budget campaigns, isn't automatically a rule about how spending should split for a different business entirely. The number got repeated so often it hardened into gospel. The research behind it was never built to bear that kind of weight. What a small business needs instead is a way to weigh its own spending decisions on their own terms, which is why Knowing judges an ad against the goal you set for it.

Why the number needs scale to mean anything.

The part of the 60/40 rule that actually determines whether it applies to you isn't the ratio. It's a hidden assumption sitting underneath the ratio: that your 60% buys enough advertising to matter against what competitors are spending. Marketers call this share of voice — how much of the total advertising noise in your category is coming from you versus everyone else. An analysis from Marqeable runs the arithmetic directly: a startup spending tens of thousands of dollars a month, in a category where incumbents spend seven figures a quarter, ends up with a share of voice that, in the piece's words, 'rounds to zero.'

At a few thousand dollars a month, that problem is worse, not better. The 60% isn't buying slow, patient brand-building. It's buying a handful of impressions that get lost in the noise of everything else a potential customer sees that week. Brand advertising works by repetition and reach over time; a budget too small to reach anyone repeatedly can't do the job the 60% is supposed to do, no matter how faithfully the split is followed.

The ratio doesn't fail because brand building is wrong. It fails because your 60% was never large enough to buy a share of voice worth having.

The research itself has been challenged, not just the way it's applied.

It isn't only small businesses who should be skeptical of treating 60/40 as settled science. Byron Sharp, of the Ehrenberg-Bass Institute, went after the underlying data directly in a 2022 talk, pointing out that the original IPA study drew on what he called 'a very weird data set, which is award submissions' — campaigns submitted for advertising awards, a self-selected group that skews toward agencies with a story to tell, not a representative sample of what works. Sharp's broader argument, as the Marqeable piece quotes him, is that a number like this exists partly because demand created the supply: 'where there is demand, there will always be supply.' People wanted a rule, so one got produced.

Sharp makes a second point worth sitting with: in practice, nobody can cleanly separate 'brand' spending from 'activation' spending, which makes any fixed ratio between them somewhat arbitrary to apply. An ad that makes someone remember your name and an ad that makes them click 'buy' are often the same ad doing both jobs at once, especially for a small business running a handful of creative variations rather than a full media plan with separate brand and performance lines.

A B2B version of the study points somewhere more useful than the ratio.

There's a related number that gets quoted almost as often — a B2B variant of the split, usually cited around 46/54, brand to activation. A piece from Fixora Solutions repeats that figure and ties it to a separate finding worth knowing: in B2B categories, only around 5% of buyers are actively in-market at any given moment. Spend everything chasing that 5% and you're bidding against every competitor for the same fixed, small pool of ready buyers, forever — which is why pure performance spending tends to show rising cost per customer over time, even when nothing about the targeting has gotten worse.

But the 46/54 figure itself traces back to preliminary work that the publisher sponsoring it rounded to 'closer to 50/50' and explicitly flagged as a small sample — a directional early finding that's since been treated, by repetition, as a settled benchmark. The more useful finding from that same body of research gets quoted far less often: Binet and Field found no examples in their B2B sample of campaigns that worked by increasing customer loyalty. The campaigns that worked grew by reaching new customers, not by deepening relationships with existing ones. That's a claim about what actually moves a business forward, and it has nothing to do with a 46/54 split.

What this means for a budget that can't clear the share-of-voice bar.

If a few thousand dollars a month can't buy real share of voice, splitting it 60/40 doesn't rescue the brand-building half. It just means both halves are underfunded. The more honest question isn't what ratio to use. It's what job the money can actually do at this scale, and the Fixora piece frames this sharply: 'every individual decision was defensible on the data available, and the aggregate was wrong' — meaning a business can justify cutting brand spend every quarter because the sales numbers look fine, for two or three quarters running — right up until the cost of getting a new customer starts climbing, because nobody recognizes the name anymore.

For a business at this scale, that argues for spending activation dollars on getting people to act now, since that's the job a small budget can reliably do, while building recognition through things that don't require buying reach: being visible in the same places repeatedly, a distinctive look across every ad so people start to recognize it, word of mouth, local presence. None of that requires a 60% media allocation. It requires consistency, which costs attention and discipline rather than dollars. The 60/40 rule assumed you had the dollars. Most small businesses have the discipline instead, and that's the asset actually worth spending.