A COUNCIL tax freeze for pensioners could be open to legal challenge, it was claimed at a town hall meeting.
Opposition politicians said the plan by Tory leaders of Kirklees Council raised questions about fairness.
Pensioners over 65 and on council tax benefit will save an average £35 a year.
But Lib-Dem group leader Clr Kath Pinnock said the scheme discriminated.
She said: "There are many other people who could be described as being on a fixed income, especially those on minimum wage.
"They may well be poorer than those who will benefit from this scheme."
She spoke out at a meeting of the council's cabinet.
Clr Pinnock said a number of other councils had torn up plans for discounts because of challenges on their legality.
Clr David Hall, Tory cabinet member responsible for finance, replied: "We have taken legal advice to ensure that it is secure and watertight."
The scheme - due to be introduced next April - was good and deserved support, he said.
Pressed on whether it will be extended to other people, he said: "Whether or not this is the first step of many will of course be the decision of successive Conservative administrations."