Marketing

Budget Cuts to 7.7% of Revenue: Proving Marketing ROI

9 December 2025
10 min
Ben Gale
Budget Cuts to 7.7% of Revenue: Proving Marketing ROI

The Budget Squeeze

Gartner's CMO Spend Survey shows marketing budgets have fallen to approximately 7.7% of company revenue—a historic low. CFOs are scrutinising every marketing pound, and the days of soft metrics are over.

Marketing teams face an existential challenge: prove return on investment in terms finance understands, or lose budget to departments that can.

7.7%
Average marketing budget as % revenue
Historic low
Budget levels
ROI
What CFOs demand

Why Marketing Struggles with ROI

The Measurement Problem

Marketing activities don't always connect directly to revenue:

  • Brand awareness doesn't have an immediate sale attached
  • Content marketing influences decisions over months
  • Social media engagement doesn't equal purchase
  • Multiple touchpoints blur attribution

The Vanity Metric Trap

Marketing often reports metrics that don't matter to finance:

  • Impressions and reach
  • Engagement rates
  • Follower counts
  • Website traffic
  • Email open rates

These are activity measures, not business outcomes. CFOs don't care how many people liked your post.

The Attribution Challenge

When a customer buys, which marketing activity caused it?

  • They saw an ad six months ago
  • They clicked an email last week
  • They searched and found your website
  • A colleague recommended you

Crediting any single activity is problematic. Crediting all of them double-counts.

Warning

If you can't connect marketing activity to revenue in a way finance accepts, you won't get budget. "Trust us, it works" doesn't survive budget reviews.

What Finance Directors Want

Revenue Impact

Questions they ask:

  • How much revenue did marketing generate?
  • What was the cost per customer acquired?
  • How does marketing ROI compare to other investments?
  • What happens if we cut marketing budget?

Clear Attribution

They want to understand:

  • Which activities drive which outcomes
  • How we know marketing caused the sale
  • What assumptions are in the calculation
  • Where uncertainty exists

Comparable Metrics

Finance thinks in terms of:

  • Return on Investment
  • Payback period
  • Cost per acquisition
  • Customer Lifetime Value
  • Marginal return on spend
Financial dashboard showing marketing metrics
Marketing ROI must be presented in terms finance understands and trusts

Building Better Attribution

First-Party Data Foundation

Rely on data you control:

CRM Connection:

  • Track leads from source to close
  • Record marketing touchpoints
  • Calculate actual conversion rates
  • Measure revenue by channel

Website Analytics:

  • Track conversions, not just visits
  • Set up goals that matter
  • Connect to sales outcomes
  • Understand customer journeys

Sales Feedback:

  • Why did customers buy?
  • What influenced their decision?
  • Which marketing did they remember?
  • What objections did marketing address?

Attribution Models

Choose an approach and be consistent:

First-Touch: Credit the first marketing interaction

  • Simple to implement
  • Good for awareness measurement
  • Undervalues later touchpoints

Last-Touch: Credit the final interaction before purchase

  • Common default in analytics
  • Overvalues end-of-funnel
  • Ignores awareness activities

Multi-Touch: Distribute credit across touchpoints

  • More realistic
  • More complex to implement
  • Various weighting approaches

Time-Decay: Weight recent touchpoints more heavily

  • Balances awareness and conversion
  • Requires judgment on decay rate
  • Often a reasonable compromise
Pro Tip

The perfect attribution model doesn't exist. Choose one, document your assumptions, and be consistent. CFOs care more about methodology than perfection.

Incremental Measurement

The gold standard: what happened because of marketing that wouldn't have happened otherwise?

Approaches:

  • Geographic tests (market A with marketing, market B without)
  • Time-based tests (periods with and without activity)
  • Holdout groups (some customers excluded from campaigns)

Challenges:

  • Requires scale and patience
  • Impractical for some activities
  • Need statistical rigour

Metrics That Matter

Customer Acquisition Cost (CAC)

Calculation: Total marketing spend / Number of customers acquired

Why It Matters: Direct measure of marketing efficiency. Can compare to customer value to assess sustainability.

How to Improve:

  • Reduce cost per lead
  • Improve conversion rates
  • Focus on higher-converting channels

Marketing-Attributed Revenue

Calculation: Revenue from customers who can be traced to marketing activities

Why It Matters: Shows marketing's direct contribution to top line.

Challenges:

  • Depends on attribution model
  • Can over or understate impact
  • Need clear rules applied consistently

Marketing ROI

Calculation: (Marketing-attributed revenue - Marketing cost) / Marketing cost

Why It Matters: The comparison CFOs understand. Return on investment makes sense across the business.

Presentation: "For every £1 spent on marketing, we generated £X in revenue, with £Y net contribution."

Pipeline Contribution

Calculation: Percentage of sales pipeline sourced or influenced by marketing

Why It Matters: Shows marketing's role in generating opportunities, even before revenue closes.

Useful For: Longer sales cycles where revenue attribution is delayed.

Making the Case to Finance

Speak Their Language

Don't Say: "Marketing drove 50,000 impressions and 2,000 engagements." Do Say: "Marketing generated 150 qualified leads at £80 per lead, of which 30 closed for £75,000 in revenue—a 6:1 return on the £12,000 spent."

Show Your Workings

Finance respects:

  • Clear methodology
  • Documented assumptions
  • Acknowledged limitations
  • Consistent application

Finance distrusts:

  • Black box "trust me" numbers
  • Cherry-picked results
  • Changing methodologies
  • Implausible precision

Compare Alternatives

What would happen without marketing?

  • Lead flow would decrease by X%
  • Cost per lead would increase as we rely on sales prospecting
  • Brand awareness would decline affecting all conversions
  • Competitors would gain share

Present Options

Give finance choices:

  • Current budget: X leads, Y revenue
  • Reduced budget: Z leads, W revenue (what you'd cut)
  • Increased budget: A leads, B revenue (where you'd invest)

Show the trade-offs rather than defending a fixed number.

Info

CFOs don't want to cut effective marketing—they want to cut waste. Help them understand which is which, and you're more likely to protect valuable activities.

Automation for Better Attribution

Technology helps track and attribute:

CRM Integration

Connect marketing tools to sales systems:

  • Lead source tracking
  • Touchpoint recording
  • Conversion tracking
  • Revenue attribution

Marketing Automation

Track the customer journey:

  • Email engagement linked to outcomes
  • Content consumption tracked
  • Scoring based on behaviour
  • Handoff to sales with context

Analytics Platforms

Unified measurement:

  • Multi-channel attribution
  • Customer journey visualisation
  • Conversion path analysis
  • ROI dashboards

Reporting Automation

Regular, consistent reporting:

  • Automated data collection
  • Standard metric calculation
  • Trend visualisation
  • Anomaly flagging

Building Budget Resilience

Continuous Measurement

Don't wait for budget season:

  • Monthly ROI tracking
  • Quarterly review with finance
  • Regular attribution audits
  • Proactive communication of results

Test and Learn

Demonstrate optimisation:

  • A/B testing showing improvement
  • Budget reallocation based on data
  • Experiments that reduce cost or increase return
  • Evidence-based decision making

Strategic Alignment

Connect to business priorities:

  • How marketing supports company goals
  • Contribution to strategic initiatives
  • Risk mitigation role
  • Competitive positioning

In a 7.7% budget environment, marketing teams that can prove ROI will survive and even grow. Those that can't will continue to shrink.


Need help proving marketing ROI to your leadership? We help marketing teams implement measurement systems that demonstrate clear business impact.

Book a consultation to discuss your attribution and ROI challenges.

Ben Gale

Ben Gale

25 years IT and leadership experience. Based in Woodley, Reading. Helping Thames Valley businesses automate workflows and reduce admin overhead.

Learn more about Ben →

Frequently Asked Questions

What metrics do CFOs want to see from marketing?

CFOs want to see revenue-focused metrics including Customer Acquisition Cost (CAC), marketing-attributed revenue, marketing ROI, and pipeline contribution. They care about return on investment and clear attribution, not vanity metrics like impressions or follower counts.

Which marketing attribution model should I use?

There is no perfect attribution model. Choose from first-touch, last-touch, multi-touch, or time-decay models based on your business needs. The key is to document your methodology, acknowledge limitations, and apply it consistently. CFOs care more about consistent methodology than perfection.

How can I prove marketing ROI to finance directors?

Speak their language by presenting results in terms of revenue generated, cost per customer acquired, and return on investment. Show your workings with clear methodology, compare alternatives to demonstrate what would happen without marketing, and present budget options with trade-offs.

Why are marketing budgets at historic lows?

According to Gartner's CMO Spend Survey, marketing budgets have fallen to approximately 7.7% of company revenue due to increased CFO scrutiny and demands for accountability. Marketing teams that cannot prove clear ROI in terms finance understands are losing budget to departments that can.

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