Marketing Budget Allocation: The 60/40 Rule, Zero-Based Budgeting & More

Marketing budget allocation is one of the most consequential decisions a marketing leader makes — and one of the least supported by clear frameworks. Spending too much on short-term activation erodes long-term brand equity. Spending too much on brand building starves the pipeline. Getting the balance right requires both the right models and the discipline to apply them consistently. This guide walks through the leading allocation frameworks, how to adapt them to your context, and how to build the measurement system that lets you defend and refine your choices.

The 60/40 rule: brand vs. activation

The most empirically grounded framework for marketing budget allocation comes from Les Binet and Peter Field's analysis of the IPA Databank — the largest database of marketing effectiveness case studies in the world, covering hundreds of campaigns across decades. Their finding, published in The Long and the Short of It (2013) and refined in subsequent work, is that the optimal long-term split for most categories is roughly 60% on brand-building activity and 40% on sales activation.

Binet and Field found that companies which over-invest in activation at the expense of brand building see short-term revenue lift but long-term profit erosion — because they become more reliant on promotions and price cuts to drive sales. The 60/40 split is a starting point, not a rigid rule. B2B categories, where purchase cycles are long and the buyer set is small, often shift toward 46% brand / 54% activation, as Binet and Field noted in their 2019 follow-up work for the IPA.

Zero-based budgeting

Traditional budgeting starts from last year's number and adjusts up or down. Zero-based budgeting (ZBB) starts from zero every cycle and requires every line item to be justified on its expected return. Popularised in corporate settings by consultancies including McKinsey and applied by large consumer goods companies, ZBB forces a discipline that incremental budgeting never achieves.

In marketing, ZBB works best when combined with clear attribution data. Each channel or programme is assessed on its marginal contribution: if you did not run this activity, what revenue or brand equity would you lose? Activities that cannot answer that question are candidates for elimination or reduction.

The practical downside of ZBB is the time it consumes. For most marketing teams, a hybrid approach works better: ZBB applied to the bottom 20% of spend each year, with incremental budgeting for established channels where historical data provides a clear return signal.

The 70-20-10 model

Originally articulated in an innovation context and widely adopted in marketing, the 70-20-10 model allocates budget across three risk tiers:

• 70% — core. Proven channels and programmes with predictable returns. Search, email, established content formats, owned channels. Low risk, reliable output.
• 20% — adjacent. Extensions of what already works: new geographies, new audience segments, new formats in proven channels. Medium risk, higher potential upside.
• 10% — experimental. New platforms, emerging formats, untested hypotheses. High risk, but essential for discovering the next core channel before competitors do.

The 70-20-10 model is particularly useful for marketing planning because it makes the risk conversation explicit. When leadership asks why you are spending money on an unproven channel, the answer is structural: 10% of budget is reserved for learning, and the expected output is insight, not revenue.

Allocating by channel and funnel stage

Once you have established your top-level brand/activation ratio and risk tier allocation, the next decision is channel-level distribution. The right allocation depends heavily on your category, competitive set, and growth stage. A Series A SaaS company allocating budget the same way as a mass-market FMCG brand will misallocate almost every pound.

For more on how to map content and activity to funnel stages, see the marketing funnel guide. For measurement frameworks to validate your channel choices, the marketing KPIs guide covers leading and lagging indicators by stage.

How much should you spend on marketing overall?

Total marketing budget as a percentage of revenue varies significantly by industry and growth stage. Gartner's annual CMO Spend Survey has historically placed the median at 9–12% of company revenue for B2C companies and 5–8% for B2B. High-growth SaaS companies often run at 15–25% of ARR in the early stages of their growth curve, reducing as they achieve market leadership.

Rather than anchoring on a percentage, a more rigorous approach is to model the budget from the bottom up: what pipeline does the business need from marketing? What conversion rates apply at each funnel stage? What does it cost to generate the required volume of demand at each stage? That bottom-up model gives you a defensible budget number grounded in business outcomes rather than historical precedent.

Defending your budget to the CFO

The most common failure mode in marketing budget conversations is presenting outputs (reach, clicks, impressions) rather than outcomes (pipeline, revenue, market share). CFOs operate in the language of financial returns, payback periods, and marginal revenue. Translate every major budget line into those terms.

For brand investment specifically — where the payback period is long and causality is hard to prove — the best available tool is marketing mix modelling (MMM), which uses regression analysis on historical sales and spend data to decompose the contribution of each channel. When combined with brand tracking, MMM provides the clearest evidence of brand ROI available to most marketing teams. See the marketing mix modelling guide for a full explanation.

Building your marketing plan's budget section inside a structured tool also helps: it forces you to attach an expected return to every line item and creates a record for quarterly performance reviews. Use the Hatch plan builder to structure your budget allocation alongside your objectives and KPIs.