After promising a 15 per cent tax concession for societies which engage in solid waste management, the evaluation procedure that the civic body has come up with will lead to societies getting only a small fraction of the total tax as discount.

"The 15 per cent concession will be offered only on the general component — which varies from 10 to 30 per cent — of the total property tax," said a Brihanmumbai Municipal Corporation (BMC) official. This effectively means, if the property tax is Rs 100, the general tax component within it will be anything between Rs 10-30. The maximum 15 per cent discount will be given on this component, which would make the highest possible discount come up to Rs 4.5.