A PR budget should be linked to the decision the organization wants to make. If the goal is customer understanding or reduced risk, forcing every result into an advertising-value equivalent can mislead. If a monetary return is estimated, use incremental contribution after variable costs and the complete PR investment for the same period. State what is directly measured and what is modeled.
Build the complete cost ledger
Do not compare a partial PR cost with a complete sales result. If a team uses a shared campaign with marketing, agree in advance how joint costs and outcomes will be reported so the same result is not counted twice.
- Staff and agency time attributable to the campaign.
- Research, survey, design, video, and editorial production.
- Distribution, events, monitoring, and paid amplification when in scope.
- Overhead or shared costs allocated by a documented method.
Choose the result that fits the goal
Communication output
Coverage, briefings, and content delivered show activity. They are not ROI by themselves.
Audience outcome
Surveyed understanding, trust, or an action taken is closer to the objective but may not have a defensible dollar value.
Financial contribution
When reliable, estimate incremental revenue less related variable costs, then subtract complete campaign investment before dividing by that investment.
An illustrative, not automatic, calculation
If a campaign cost $10,000 and a controlled analysis credibly estimates $14,000 in incremental contribution, a modeled ROI is ($14,000 - $10,000) / $10,000 = 40%. If the $14,000 is merely total sales during the campaign, the calculation is not valid: many sales may have happened anyway. Show a range when attribution is uncertain and avoid reporting false precision.
AMEC's framework encourages a line of sight from objectives to outputs, out-takes, outcomes, and organizational impact. Use nonfinancial outcomes when they are the real goal. The purpose of the budget report is to decide what to improve, not to make every press mention look like paid advertising.