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Interactive Lab
Marketing & Commercial Forecasting Simulator
Compare a baseline and adjusted funnel from marketing spend to net contribution. Every formula is explicit, and every number updates live.
Runs in your browser. Nothing is sent, saved remotely or connected to a live platform.
Apply to adjusted:
Baseline inputs
Adjusted inputs
Baseline
Leads200
Qualified80
Sales16
Revenue£40,000
Gross profit£22,00055.0% margin
Net contribution£9,000After marketing + selected overheads
CPA£625
ROAS4.00×
ROI120.0%(Gross profit − marketing) ÷ marketing
Adjusted
Leads200
Qualified80
Sales16
Revenue£40,000
Gross profit£22,00055.0% margin
Net contribution£9,000After marketing + selected overheads
CPA£625
ROAS4.00×
ROI120.0%(Gross profit − marketing) ÷ marketing
Baseline net contribution
Adjusted net contribution
Delta: +£0
Definitions and formulas
Gross profit = revenue − direct delivery/COGS. Net contribution = gross profit − marketing spend − the fixed overheads selected here. ROI uses contribution after marketing (gross profit − marketing spend) divided by marketing spend. This is a scenario model, not a prediction or a full profit-and-loss statement.