<prompt> Human: I have extra money to put towards my mortgage. Which option makes more sense -- do a little bit extra every month? about 13 a payment or save it in an interest bearing account for a big payment at end of the year? would be about 3 payments worth...If my thinking is correct, the interest accruing on the mortgage every month is greater than the interest Im gathering in a savings account, so that should be the priority. Furthermore, by paying down principal, the amount of my future payments going towards principal would increase too, yes?And by doing 3 extra payments per year, on a 30 year note Im shaving off about 12-14 years of the total loan, yes? Almost cutting it in half?  <response>: do a little bit extra every month? about 13 a payment or save it in an interest bearing account for a big payment at end of the year? would be about 3 payments worth...Making extra payments each month would be better. Especially in your case, where your monthly plan gets 4 extra payments per year, not 3 as your lump sum. 