Marketing budgets are cut when leadership sees marketing as a cost, and grown when they see it as an investment with returns. Which of those happens is substantially within your control - it depends less on your results than on how credibly you connect them to money. Here is the playbook.
Speak revenue, not marketing
Executives don't buy impressions, sessions or engagement rates; they buy pipeline, customers and revenue. Translate before you present: not "the campaign got 45,000 impressions and a 2.1% CTR" but "the campaign generated 38 qualified leads at £42 each; historically 20% close at £3,000 average order - roughly £22,800 expected revenue from £1,600 spend." Every claim in the second sentence is checkable, which is exactly why it works.
Build the evidence chain
Proof requires plumbing that connects spend to income:
- Conversion tracking on every action worth money
- Source attribution - UTMs plus CRM source fields, so each lead's origin survives to the closed deal
- A consistent ROI formula - (attributable revenue − full marketing cost) ÷ cost, with cost including fees and tools, not just media
The full setup is covered in how to track marketing performance and ROI. Where sales cycles are long, report expected value (pipeline × historical close rate) and say so - finance teams respect stated assumptions far more than suspicious precision.
Handle attribution honestly
Smart bosses will poke the weak spot: "would those customers have come anyway?" Pre-empt it. Acknowledge that attribution is a model, show the conservative version (marketing-sourced only), mention the fuller version (marketing-influenced), and keep the model consistent quarter to quarter. Credibility compounds; overclaiming once costs it permanently. It also helps to report lead quality, not just volume - bosses notice when marketing's "wins" waste the sales team's time.
Report on a rhythm, in their format
A one-page monthly summary beats a forty-slide quarterly surprise: spend, leads/sales, CPA, revenue attributed, one insight, one decision requested. Bring trends, not snapshots. And frame asks as investments - "another £2,000 in this channel should return roughly £8,000 at current CPA" - because that sentence is the entire genre executives are fluent in. Understanding how finance actually evaluates spend helps enormously; it is the exact ground our Finance for Non-Finance Executive course covers.
Make ROI fluency a career asset
Marketers who can prove value get budgets, promotions and board access; the craft is teachable. The Digital Marketing in Practice course at London School of Business UK builds measurement and reporting into every module. Enquire here.