A Kerry businessman was overcharged just over €664,000 in interest by KBC Bank Ireland after it wrongly withdrew his tracker mortgage rate.

His is one of the biggest cases of its kind in the tracker mortgage scandal, which is estimated to have cost about €1 billion.

While more than half of the 40,000 people affected have settled for €10,000 in redress and compensation, he has so far received €202,512.

It is one of the biggest payouts by any bank so far, and is on top of the return of the €664,563 in interest KBC Ireland has admitted he was wrongly charged.

But the man, who is now unemployed, is appealing the compensation and redress he has received.

He has also instructed solicitor John Cashell, of Tralee and Listowel-based Cashell Solicitors, to sue the bank.

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