offset programmes most commonly seek to deliver a neutral outcome on biodiversity from development projects or no net loss of biodiversity though some have adopted a more ambitious goal of delivering a positive outcome or net gain for biodiversity biodiversity offsets are typically only used to deliver compensation for the residual impacts on biodiversity after measures have first been taken to avoid minimise and then restore adverse impacts on biodiversity at the development site ie the mitigation hierarchy biodiversity offsets may be implemented using oneoff offsets biobanks or payments inlieu