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A Simple Demand Generation Budget Formula: Audience, CPM, and Frequency

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Orrett Davis explains audience size, CPM, and frequency in demand generation budgeting

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A demand generation media budget should reflect who you want to reach and how often you expect them to encounter the message. Choosing a round monthly number without those assumptions makes the plan harder to evaluate.

The accompanying video presents a simple planning model using audience size, expected reach, cost per thousand impressions, and frequency.

Define the inputs before calculating spend

Start with the size of the relevant audience. Then estimate the portion you expect to reach during the period, the average frequency, and the CPM you plan around.

The messaging mix matters too. Educational content, customer proof, and product explanations have different jobs within a demand generation framework.

Frequency is an average number of impressions per reached person. Five creative messages do not guarantee that each person will see each message once.

Work through the video’s example

The video uses the following illustrative assumptions:

  • Total audience: 100,000 people.
  • Planned monthly reach: 20%, or 20,000 people.
  • Average frequency: five impressions per reached person.
  • Assumed CPM: $60.

That produces 100,000 planned impressions. Dividing by 1,000 and multiplying by the $60 CPM gives an estimated $6,000 in monthly media spend.

The formula is:

Media spend = reached audience × average frequency ÷ 1,000 × CPM.

The reach percentage and CPM are examples, not healthcare advertising benchmarks or guaranteed delivery costs.

Media delivery and customer acquisition answer different budget questions

Model Inputs What it estimates
Media delivery Reached audience, frequency, and CPM Spend needed for the planned impressions
Customer acquisition Allowable cost per customer and lead-to-customer rate A provisional CPL ceiling for a defined lead type

Use the CPL and acquisition cost model alongside the media estimate when deciding whether a plan is commercially plausible. Neither calculation replaces observed campaign and sales results.

Treat the result as a planning estimate

This calculation estimates media spend. It does not include creative production, campaign management, landing pages, software, or sales follow-up. It also does not predict leads or revenue.

After launch, replace assumptions with observed delivery and sales data. If the campaign reaches fewer relevant people or costs more than expected, revise the plan rather than treating the original figure as fixed.

For a broader planning discussion, see the B2B SaaS demand generation budget guide.

Watch the original demand generation budgeting example on YouTube.

FAQ

No. It is the result of one illustrative set of inputs. Your audience, delivery costs, frequency, and objectives may require a different plan.

Does the formula predict revenue?

No. Revenue depends on additional stages, including engagement, conversion, qualification, and sales. This model estimates the cost of planned impressions.

Does five-message creative mean a frequency of five?

Not automatically. Creative variety and delivered frequency are related planning considerations, but platforms do not guarantee that every reached person sees every asset.

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Orrett Davis

Written by Orrett Davis

Founder, Mighty Orbit. Helping B2B tech and health startups build more effective marketing.

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