I refinanced my home last year and paid points. Are they all deductible this year?

Generally points paid to refinance your home are not deductible in their entirety in the year paid. They are "amortized" or deducted over the life of the loan. For more information, refer to Publication 936 , Home Mortgage Interest Deduction, and Tax Topic 504, Home Mortgage Points.

If I must deduct points over the life of my mortgage, and I have a 30 year mortgage, does this mean that I divide the points paid by 30 and enter that amount on Schedule A?

No, you don't divide the points by 30. If you choose to use the straight-line method, you need to divide the points by the number of payments over the term of the loan and deduct points for a year according to the number of payments made in the year. If the loan ends prematurely, due to payoff or refinance with a different lender, for example, then the remaining points are deducted in that year. Points not included in Form 1098 (PDF) (usually not included on a refinance) should be entered on line 12 of Form 1040, Schedule A (PDF), Itemized Deductions. For more information, refer to Publication 936, Home Mortgage Interest Deduction; and Tax Topic 504, Home Mortgage Points.