 He says, I want to pay off my mortgage faster so that I can pay less in interest. I have some extra money that I can put towards the mortgage, and I'm wondering if it would be best to make extra monthly payments or do a large lump sum. Well, Mr. Forty, I would say first step, make sure you have three to six months living expenses and liquid savings for your emergency before you do this. But after that, I love the idea of you prepaying that mortgage. That's going to save you a bundle in interest down the road.