Net Social Value Explorer | HealthEconomics.wiki

Decision safeguard: A positive net present value (NPV) or the largest NPV does not by itself determine adoption. Evidence quality, distribution, affordability, feasibility, rights, unmonetised effects and opportunity costs still matter.

Shared settings

Discount rate (%)Currency/unit label

Year 0 is not discounted. Transfers are shown separately and excluded from net social value because a transfer changes who holds resources, not necessarily total social resources.

Comparison

Discounted audit trail

Year	A PV cost	A PV benefit	A transfer	B PV cost	B PV benefit	B transfer

Distribution and effects register

Affected groups for Option AAffected groups for Option BImportant unmonetised effect for Option AImportant unmonetised effect for Option B

Actions

Method, evidence and originality

This original educational model applies standard present-value arithmetic: PV = value ÷ (1 + r)^t; NPV = PV benefits − PV resource costs; BCR = PV benefits ÷ PV resource costs. A BCR is suppressed when discounted resource cost is zero. The switching value is the extra social value required for the lower-NPV option to tie the higher-NPV option.

Method references: Boardman et al., Cost–Benefit Analysis (2018); HM Treasury, The Green Book 2026; CDC Cost-Benefit Analysis; WHO guide for economic evaluation of multisectoral action for health. The interface, wording, logic and synthetic example were created from a blank file for HealthEconomics.wiki.