Future Tax — GST calculator share URL query keys
Page: https://futuretax.in/tools/gst-calculator/
Query overrides session/localStorage (ft_gst_calc_state_v1).

  amt             Taxable amount (₹)
  rate            GST % (default 18 omitted)
  type            inter for IGST (intra default omitted)
  mode            incl when tax-inclusive entry (excl default omitted)

Browser state: ft_gst_calc_state_v1