The Centre and states are exploring ways to widen the GST taxpayer base and boost collections with a few states working on pilot projects to link third party data with that of the assesses. Vivek Johri, chairman, Central Board of Indirect Taxes and Customs, said various strategies are being worked upon to widen the tax base. “Widening GST base would mean we have to see taxpayers who ought to be in tax net… are they there or not. This can be through more robust use of data from other agencies. Some states are working on various pilots,” he told reporters on Saturday after the 48th meeting of the GST Council.