Flatvat.com, an initiative from CA Sharad Patel, has gained momentum. Times Of India covers one of its first impacts:

A Belapur housing society recently scored a major victory over the value-added tax (VAT) issue. Following Lakhani’s Suncoast Cooperative Housing Society members’ refusal to pay 5% of the agreement value as VAT, Lakhani Builders reworked the VAT calculation. As a result, the amount sought from flat owners got reduced by almost a half.