Turn a revenue target into a defensible marketing budget.

Model the deals, opportunities, and leads required before assigning budget. Existing organic demand offsets the paid lead gap; operating cost remains visible.

B2B marketing budget assumptions

Annual new revenue targetUSD

Average deal valueUSD

Opportunity-to-win rate%

Lead-to-opportunity rate%

Paid cost per leadUSD

Existing annual organic leadsleads

Monthly marketing operations costUSD

Deals required: 40
Opportunities required: 160
Total leads required: 1,600
Paid lead gap: 1,300
Annual media budget: $234,000.00
Annual operations budget: $60,000.00
Total annual budget: $294,000.00
Monthly budget: $24,500.00
Marketing cost per required deal: $7,350.00
Budget share of target: 14.7%

The model leaves a paid acquisition gap of 1,300 leads.

Deals required: 40. Opportunities required: 160. Total leads required: 1,600. Paid lead gap: 1,300. Annual media budget: $234,000.00. Annual operations budget: $60,000.00. Total annual budget: $294,000.00. Monthly budget: $24,500.00. Marketing cost per required deal: $7,350.00. Budget share of target: 14.7%

How the calculation works.

The calculator works backwards from revenue to deals, opportunities, and leads. It subtracts existing organic leads, prices the remaining gap at the entered CPL, and adds annual marketing operations cost.

How to use the result.

Use the result to compare conversion improvement with additional spend. A lower paid lead gap may come from stronger organic demand or better qualification, not only a cheaper lead source.

Formula behind the result.

Deals and opportunities: Revenue target ÷ deal value ÷ win rate
Lead requirement: Required opportunities ÷ lead-to-opportunity rate
Media budget: (Required leads − organic leads) × paid CPL
Total budget: Annual media budget + annual operations cost

Worked example.

A $2 million target at $50,000 per deal and a 25% win rate requires 160 opportunities. At a 10% lead-to-opportunity rate, that means 1,600 annual leads before existing organic volume is deducted.

Questions worth asking.

What is included in the marketing budget?

This model includes the paid cost of the lead gap and a separate monthly operations cost. Add events, creative, agencies, and other fixed costs to the operations input when relevant.

Why subtract organic leads?

Existing organic demand reduces the number of leads that must be purchased or generated through additional funded programs.

What does marketing cost per required deal include?

It divides the modeled media and marketing operations budget by the required number of closed-won deals. It does not include sales payroll unless added to operations cost.

Should I use benchmark conversion rates?

Use your own observed conversion rates whenever possible. Benchmarks can start a scenario, but they should not approve a budget.

Keep the working notes.

B2B revenue funnel calculator

Calculate backwards from annual revenue to required deals, opportunities, meetings, leads, visitors, and pipeline coverage.

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