Yorkshire Building Society chief executive Chris Pilling will step down at the end of the year.
Pilling says he wants work that lets him spend more time with his family.
He will stay on as chief executive while the lender finds his replacement.
Pilling says: “After nearly five years as chief executive of the society during a period of significant change, I have decided to step down with the intention of pursuing new and different opportunities that will give me more balance with my family life.
“From a personal perspective, I believe now is the right time for me to do this and for the board to appoint a new chief executive to continue to take the society forward.
“The society is in a strong position despite the challenging markets and it has been a privilege to have been part of its recent history and success. In the meantime, it is business as usual.”
Yorkshire chairman John Heaps says: “It is with regret that I have to announce that our chief executive Chris Pilling intends to step down.
“This is entirely a personal decision on Chris’ part. I would like to thank Chris for his tremendous contribution to the continuing success of the society over the past five years.”