After rationalising income tax rates in the Union Budget, the government may also be looking at rationalising the Goods and Services Tax (GST) rates, sources told Moneycontrol. The process has already begun, with the Centre working towards bringing all states on board, sources said. "The process is already underway to rationalise GST, and we want to ensure a consensus among states before finalising any changes," a source aware of the matter said on condition of anonymity. The move follows Finance Minister Nirmala Sitharaman’s recent Budget announcement on February 1, where she offered significant relief to the middle class by exempting individuals earning up to Rs 12 lakh from income tax while also tweaking tax slabs for others.