Interactive tool
Budget impact calculator
Estimate the yearly and five-year budget impact of adopting an intervention, from the eligible population, uptake, cost per patient and cost offsets.
Example values for demonstration. Calculations run in your browser; nothing you enter is stored or sent.
Five-year totals
5-year net budget impact
USD 1,740,001
5-year gross cost
USD 2,372,729
Patients treated (5 years)
15,818
Yearly budget impact
| Year | Eligible | Uptake | Treated | Gross cost | Offsets | Net impact |
|---|---|---|---|---|---|---|
| Year 1 | 10,000 | 10% | 1,000 | USD 150,000 | −USD 40,000 | USD 110,000 |
| Year 2 | 10,200 | 20% | 2,040 | USD 306,000 | −USD 81,600 | USD 224,400 |
| Year 3 | 10,404 | 30% | 3,121 | USD 468,180 | −USD 124,848 | USD 343,332 |
| Year 4 | 10,612 | 40% | 4,245 | USD 636,725 | −USD 169,793 | USD 466,932 |
| Year 5 | 10,824 | 50% | 5,412 | USD 811,824 | −USD 216,486 | USD 595,338 |
| 5-year total | 15,818 | USD 2,372,729 | −USD 632,728 | USD 1,740,001 |
How it works
For each year t from 1 to 5:
- Eligible populationt = population in year 1 × (1 + growth)t−1
- Patients treatedt = eligible populationt × uptaket
- Gross costt = patients treatedt × annual cost per patient
- Net budget impactt = gross costt − patients treatedt × cost offsets per patient
Costs are shown undiscounted and at constant prices, which is common practice in budget impact analysis because budget holders plan in nominal annual amounts.
A full budget impact analysis would model the mix of treatments that the intervention displaces, changes in the comparator market over time, different uptake scenarios and the budget perspective of the specific payer, and would test the results in sensitivity analysis.
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