Insights · Lead Generation · Free planning tool
Lead Generation Budget Calculator
Estimate the customers, opportunities, qualified digital leads and indicative paid media investment required to support a specific incremental revenue target.
Rather than starting with an arbitrary marketing budget, Pathfinder works backwards from the commercial outcome your business needs to achieve.
01 · Set your assumptions
Personalise the commercial outcome first
The calculator opens with a Pathfinder worked example. Before relying on the result, replace the revenue target and average sale value with figures from your own business.
Business-specific inputs
These two figures define the commercial outcome and are not populated by sector benchmarks.
Enter the incremental revenue you expect this lead-generation activity to contribute — not necessarily your company's entire growth target.
Use the average first-year revenue from one newly acquired customer. This figure has a major impact on the result, so replace the example value with your own number wherever possible.
£50,000 is the Pathfinder worked-example value. Replace this with your own average sale or annual contract value before relying on the result.
Sector planning assumptions
Select a sector to populate four conversion assumptions and a Digital CPL planning assumption. Every value remains editable.
Sector selection changes only the conversion and Digital CPL planning assumptions below. It does not change your revenue target or average sale value.
These are planning assumptions derived from published benchmark evidence, not forecasts or claims that every company in a sector will achieve these rates.
A Lead has entered the funnel; an MQL is considered sufficiently relevant and engaged for further qualification. The conversion rate is the percentage progressing between these stages. A Pathfinder worked-example assumption. Replace it with your own historical data where available.
An SQL has been qualified as a credible potential sales opportunity and is ready for direct sales engagement. A Pathfinder worked-example assumption. Replace it with your own historical data where available.
The percentage of SQLs that become qualified opportunities with a defined commercial requirement. A Pathfinder worked-example assumption. Replace it with your own historical data where available.
The percentage of qualified opportunities that convert into revenue. A Pathfinder worked-example assumption. Replace it with your own historical data where available. Use your own opportunity win rate where available.
The estimated media cost of generating an identifiable lead through paid digital channels. Published CPLs vary materially by channel, audience, geography, proposition and lead definition. Replace this assumption with your own historical digital CPL wherever available.
02 · Indicative result
Your indicative digital media investment
Pathfinder worked-example result
To generate an additional £1,000,000 in annual revenue, based on your inputs, you need approximately 1,420 digital leads, indicating annual paid digital media investment of around £170,400.
£14,200 per month
- Digital media investment as % of incremental revenue
- 17%
- Indicative digital media cost per acquired customer
- £8,520
This estimates the paid digital media investment required to generate the lead volume shown. It does not include strategy, campaign management, creative production, technology, internal team costs, website investment or broader brand and organic marketing activity.
03 · Commercial logic
Revenue → Sales → Opportunities → SQLs → MQLs → Digital Leads → Digital Media Investment
- Revenue target£1,000,000Commercial outcome
- Sales20Revenue ÷ sale value
- Opportunities67Sales ÷ Opportunity → Sale
- SQLs149Opportunities ÷ SQL → Opportunity
- MQLs497SQLs ÷ MQL → SQL
- Digital Leads1,420MQLs ÷ Lead → MQL
- Media investment£170,400Digital Leads × Digital CPL
Terminology guide
What do these terms mean?
- Lead
- An identifiable person or organisation that has entered the marketing or sales funnel.
- MQL Marketing Qualified Lead
- A lead marketing considers sufficiently relevant and engaged to warrant further qualification.
- SQL Sales Qualified Lead
- A lead qualified as a credible potential sales prospect and ready for meaningful sales engagement.
- Opportunity
- A qualified potential customer with a defined commercial requirement and realistic prospect of a transaction.
- Customer / Sale
- An opportunity that converts into revenue.
- Digital CPL
- The average paid digital media cost of generating an identifiable lead.
Definitions matter
Not every business defines a Lead, MQL, SQL or Opportunity in exactly the same way. Benchmark data should be used as a planning starting point, not a forecast. Your own consistently defined historical conversion and CPL data should take precedence wherever available.
Want to understand the terminology in more detail? Read our guide to the B2B growth metrics that matterHow we calculated these benchmarks
Start with the commercial outcome
The model begins with the incremental revenue this activity is expected to support, then uses Average Sale / Contract Value to calculate the number of new customers required. Because sale value materially changes every stage that follows, replace the worked-example value with your own figure wherever possible.
Work backwards through five funnel stages
Required volume is calculated through Lead → MQL → SQL → Opportunity → Customer / Sale. Each stage is rounded up independently, so the model does not rely on fractional leads, opportunities or customers.
Use benchmarks as planning assumptions
The sector defaults have been informed by published 2025–2026 evidence across B2B digital advertising and sales funnels. Providers define Lead, MQL, SQL and Opportunity differently, so these values are Pathfinder planning assumptions derived from multiple sources rather than a benchmark table published by any one provider.
Apply Digital CPL to digital lead volume
Digital CPL represents the paid media cost of generating an identifiable lead. The calculated investment is therefore a paid digital media estimate, not a complete marketing budget or total customer-acquisition cost.
What do we mean by digital lead generation?
For this calculator, digital lead generation primarily means paid search, LinkedIn advertising, paid social and other measurable digital campaigns used to generate identifiable prospective customers.
It excludes internal marketing and sales salaries, consultancy or agency fees, campaign management, creative production, CRM and marketing technology, website development, SEO, organic content, PR, events and broader brand-building expenditure.
Principal published sources informing the planning assumptions include First Page Sage, LocaliQ, WordStream, relevant B2B SaaS paid-media research and broader B2B sales-funnel and win-rate studies. No single source should be treated as universally authoritative.
Climate Tech / Deep Tech has particularly limited sector-specific evidence, so its assumptions draw partly on adjacent industrial, engineering, environmental-services and B2B technology data.
Commercial plausibility warnings are prompts to review the inputs, not universal profitability thresholds. Gross margin, customer retention, lifetime value and acquisition strategy vary materially between businesses.
Benchmark data should be used as a planning starting point, not a forecast. Your own consistently defined historical conversion and CPL data should take precedence wherever available. This calculator provides an indicative planning estimate and is not a guarantee of performance.
Want help turning this into a real plan?
The calculator gives you a useful starting point. A Growth Diagnostic Review™ turns the assumptions into a practical view of your commercial priorities, pipeline and next steps.
If you are earlier in the journey, the Growth Readiness Assessment™ offers a quick, structured view of where to focus first.