Most advertising budgets are not planned; they are inherited. Last year's split between Google, Meta and everything else gets rolled forward with a few tweaks, and nobody can quite explain why search gets 60% and video gets 5%. Media planning is the discipline that replaces habit with reasoning.
A media plan answers four questions: who you need to reach, where they spend attention, how much to spend in each place, and how you will know it worked. It sits between strategy and buying. Strategy sets the goal; buying executes the placements; planning decides the shape of the investment.
This guide walks through a practical media planning process for small and mid-sized businesses in 2026, including how to allocate budget across channels, how to balance short-term sales with long-term brand building, and how to measure and rebalance as you go.
Key Takeaways
- Media planning decides where, when and how much you spend; media buying executes those decisions.
- Start from business objectives and audience behaviour, not from last year's channel split.
- Allocate budget in layers: proven demand capture first, then growth and brand channels, with a ring-fenced test budget.
- Balance short-term activation with longer-term brand building; the IPA's research by Binet and Field explores why both matter.
- Use incrementality tests and, at larger budgets, marketing mix modelling to rebalance the plan over time.
What Is Media Planning?
Media planning is the process of choosing the combination of channels, formats, timing and budget that will best achieve a marketing objective. A media plan typically documents the objective, target audience, channels, budget allocation, flighting (timing) and KPIs.
| Element | Media planning | Media buying |
|---|---|---|
| Core question | Where and how much should we spend? | How do we secure those placements efficiently? |
| Main outputs | Channel mix, budget split, timing, KPIs | Campaigns, bids, insertion orders, negotiated rates |
| Time horizon | Quarterly or annual, reviewed monthly | Daily and weekly |
| Typical owner | Strategist or media planner | Channel specialists, buyers, PPC managers |
In smaller businesses one person often does both. That is fine, as long as the planning questions get asked before the buying starts.
How Much Should You Spend Overall?
Your total marketing budget is usually set before the media plan, but benchmarks help sense-check it. Gartner's 2025 CMO Spend Survey, published in May 2025, found that marketing budgets stayed flat at 7.7% of overall company revenue, with paid media accounting for 30.6% of marketing budgets. Those figures come from large enterprises, so smaller firms should treat them as context rather than a target. Our guide to planning a marketing budget covers how to set the total, and setting a PPC budget covers search specifically.
A Step-by-Step Media Planning Process
- Set the business objective. Revenue, leads, market share or awareness in a new region. Make it measurable and time-bound.
- Translate it into media targets. If you need 200 new customers a quarter and know your conversion rates, work back to the leads, clicks or reach required.
- Define the audience. Who buys, how they research and which platforms they use. Customer interviews and analytics beat assumptions.
- Map the funnel. Decide which channels create demand (video, social, native), which capture it (search, shopping) and which convert and retain (retargeting, email).
- Allocate the budget in layers (see below).
- Plan the timing. Account for seasonality, product launches and sales cycles. Our guide to seasonal marketing helps here.
- Set KPIs per channel that ladder up to the business objective.
- Build measurement in before launch: conversion tracking, UTMs and a reporting dashboard.
- Review monthly and rebalance based on results and test findings.
How to Allocate Budget Across Channels
There is no universal split. A practical way to think about allocation is in three layers:
- Layer 1: Demand capture. Channels that meet people already looking for what you sell, such as search ads, shopping ads and local listings. Fund these to the point where extra spend stops paying back.
- Layer 2: Demand creation. Channels that build future demand, such as video ads, paid social and native advertising. These often look less efficient on last-click reports but feed Layer 1.
- Layer 3: Testing. A ring-fenced portion of budget for new channels, formats and audiences, judged on learning as well as results.
| Business situation | Where to lean | Watch out for |
|---|---|---|
| Local service business with existing demand | Search, Local Services Ads, Maps | Running out of searches; add demand creation once saturated |
| New product with little search volume | Social, video, influencers, native | Judging awareness spend on last-click sales |
| Ecommerce with a mature catalogue | Shopping, Performance Max, retargeting, email | Over-crediting retargeting for sales that would happen anyway |
| B2B with long sales cycles | Search, LinkedIn, content and retargeting | Measuring on form fills instead of pipeline |
For the strategic side of channel choice, see our guides to building a marketing channel mix and multichannel marketing.
Balancing Brand Building and Activation
One of the most influential bodies of research on this question is Les Binet and Peter Field's work for the IPA, The Long and the Short of It. The IPA describes it as addressing the tension between short-term response activity and long-term brand-building, and warns of a tendency to use very short-term online metrics as primary performance measures. The practical lesson for media planners is to protect some investment in reaching future buyers, even when last-click reports favour search and retargeting.
Measuring and Rebalancing the Plan
Platform dashboards each claim credit for the same sale, so a media plan needs measurement that sits above them:
- Attribution in GA4 for directional, day-to-day decisions. See marketing attribution models.
- Incrementality tests (holdouts and geo tests) to check whether a channel causes sales.
- Marketing mix modelling for larger budgets, using historical spend and sales to estimate each channel's contribution.
Google has released an open-source MMM, Meridian, to make this more accessible:
“Meridian is an open-source MMM built by Google that provides innovative solutions to key measurement challenges.”
— Google for Developers, Meridian
Our guide to marketing mix modelling explains when it is worth the effort.
Common Mistakes in Media Planning
- Copying last year's split without asking whether it still fits the objective.
- Spreading budget too thinly across many channels so none reaches meaningful scale.
- Judging every channel on last-click ROAS, which systematically starves demand creation.
- No test budget, so the plan never learns anything new.
- Ignoring creative. The best channel plan fails with weak ads.
- Setting and forgetting. Plans should be reviewed monthly and rebalanced at least quarterly.
Related Guides
- Ad Scheduling in Google Ads: Show Ads When Customers Buy
- Google Ads Location Targeting: Settings That Save Budget
- Dynamic Search Ads: Setup, Pros and Pitfalls (and the AI Max Upgrade)
Frequently Asked Questions
What is media planning?
The process of deciding which channels, formats, timing and budget split will best achieve a marketing objective, documented in a media plan.
What is the difference between media planning and media buying?
Planning decides where and how much to spend; buying secures the placements and manages them day to day. In small teams, one person often does both.
How should I split my ad budget across channels?
There is no universal split. Fund proven demand capture first, invest in demand creation to grow future demand, and keep a ring-fenced test budget. Rebalance based on incrementality and results.
How often should a media plan be reviewed?
Check performance monthly and rebalance at least quarterly, or sooner around seasonal peaks, launches or big changes in results.
What tools help with media planning?
Analytics and attribution in GA4, platform planning tools, competitor ad research tools, and for larger budgets, marketing mix models such as Google's open-source Meridian.
Conclusion
Good media planning starts with the business objective, maps the funnel, allocates budget in layers and keeps learning through tests and better measurement. It does not need enterprise tools to work; it needs clear thinking and regular review. If you want an independent view of your channel mix and budget split, our paid media team can build a plan with you. Request a free quote to get started.
