The methodologies of the studies - Institutional Constraints to Small Farmer Development in Southern Africa - page 315

e s = price elasticity of supply;
t' = nominal tariff rate;
V' = value of domestic production at domestic prices.

NEL c = 0.5×n d ×t' 2 ×W' (A.21)

where:
NEL c = deadweight loss in consumption;
n d = price elasticity pf demand;
t' = nominal tariff rate;
W' = value of domestic consumption at domestic prices.

WG p = t'V'-NEL p (A.22)

where:
WG p = change in producer surplus;
t' = nominal tariff rate;
V' = value of domestic production at domestic prices;
NEL p = deadweight loss in production.

WG c = -(t'W'+NEL c ) (A.23)

where:
WG c = change in consumption surplus;
t' = nominal tariff rate;
W' = value of domestic consumption at domestic prices;
NEL c = deadweight loss in consumption.

∆GR = t'(W'-V') (A.24)

where:
∆GR = change in revenue;
t' = nominal tariff rate;
W' = value of domestic consumption at domestic prices;
V' = value of domestic production at domestic prices.

Loss per capita = WG c /total population (A.25)

where:

WG c = change in consumption surplus.