The other realtors have done a good job in explaining that it takes 3-5 years in general to pay off points. You would have to see the difference in the payment and whether it was worth it overall buying down the interest rate and how long you plan to stay in the home. You have to be careful about mortgage agents telling you that they will refinance you for free in one or two years to get a better rate, etc. because then paying the points just became redundant --you are starting from scratch all over again. You must stay in the same loan to take advantage of the buy down points paying themselves off in 3 years or so.
If you really figure out that you are prepaying interest at today's dollars instead of over the next five years - that has another impact but the points are tax deductible in the year you pay them. Okay, it gets really complicated. Best to figure out if you need the write-off now or for future earnings It's best to talk to your accountant. They may shed some light on whether it's worth it - since that was your question.
RE/MAX VILLAGE SQUARE
Upper Montclair, NJ