law: The Assam Reorganisation (Meghalaya) Act, 1969
  34. Exemption from taxation of properties of the Union and the State of Assam and of certain vehicles registered in Assam or Meghalaya.-
  (1) The property of the Union shall, save in so far as Parliament may, by law, otherwise provide, be exempt from all taxes imposed by Meghalaya or by any authority within Meghalaya.
  (2) Nothing in sub-section (1) shall, until Parliament by law otherwise provides, prevent any authority within Meghalaya from levying any tax on any property of the Union to which such property was immediately before the commencement of this Act liable or treated as liable so long as that tax continues to be levied in Meghalaya.
  (3) The property of the State of Assam shall, so long as the property of Meghalaya in the rest of Assam is exempt from taxes imposed by the Government of Assam or by any authority within the State of Assam, be exempt from all taxes imposed by Meghalaya or by any authority within Meghalaya.
  (4) No vehicle registered at any place in the State of Assam, not being a place in Meghalaya, and transiting through Meghalaya shall be liable to any tax under any law enacted by the Legislature of Meghalaya so long as any vehicle registered at any place in Meghalaya and transiting through the territory of Assam (not comprised in Meghalaya) is exempt from payment of any tax under any law enacted by the Legislature of the State of Assam.