A one-off compensation payment may still be due if trees on the land have been prematurely cut. It equals the difference between the estimated commercial value of the forest stand at optimum rotation age, specified in the forest management plan, and the value when it was cut down. Instead of reflecting the actual or projected timber value of converted forest land, conversion fees should be based on the biodiversity value of stands, with higher rates for threatened ecosystems. It fails to consider the opportunity cost of not converting the land, i.e. the development risk.