By paying off five times more a month than the bank really wants you to when they gave you the money.
(How is he able to do that? By working like a maniac, I guess.)
(How is he able to do that? By working like a maniac, I guess.)
On a $100k 20 year loan at at 5.7% (I know, example), interest paid would be around $67k (so total $167k). By paying 3.28 times more per month ($2300 per month versus the $700 normal rate), the interest paid ends up being only around $12k.