That's according to doddl.ie
Homeowners throughout Co. Kildare could save up to €4,000 a year by switching their mortgage provider.
That's the sum that doddl.ie estimates most homeowners are over-paying, annually.
That could amount to €100,000 over the life-time of a 25 year mortgage.
There are over 30,000 mortgaged homes in Co. Kildare.
Martina Hennessy is Managing Director at doddl.ie.
She joined Clem Ryan on Tuesday's edition of Kildare Today.