Thousands of people in Renfrewshire aged 66 and older could be entitled to Pension Credit.
Advice Works has said that around 2,500 households in the area have people who are on a low income and are not claiming the benefit.
Pension Credit tops up the pension of anyone over the state pension age who is eligible for it, helping them with rent and other housing costs.
It can be claimed even if someone has other income, savings, or owns their home.
The money can be backdated by up to three months, meaning anyone claiming now could receive the Winter Fuel Payment.
Advice Works will be in The Piazza Shopping Centre in Paisley on November 29 between 10am and 4pm with advisers on hand to talk about Pension Credit to anyone over the state pension age.
They will also talk to people about any other benefits they may be entitled to and will take details to call residents back.
Councillor Jacqueline Cameron, depute leader of Renfrewshire Council and chair of the Fairer Renfrewshire sub-committee, said: "Across Renfrewshire, there are thousands of people eligible who aren’t claiming Pension Credit.
"With costs for food, gas and electricity remaining much higher than they used to be, so it is important people get the money they are entitled to.
"I would urge everyone to check out if they could be eligible by coming along to this event at any time between 10am and 4pm."
Appointments to check for Pension Credit or claim for any other benefit can be made with either Advice Works at 0300 300 1238 or Renfrewshire Citizens Advice Bureau at 0141 889 2121.
People can apply for Pension Credit on the UK Government website.
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