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However, if you refinanced for more than the balance of the old mortgage, treat the excess as a mortgage taken out after October 13, 1987. See Pub. 936 to figure your deduction if either (1) or (2) next applies. If you had more than one home at the same time, the dollar amounts in (1) and (2) apply to the total mortgages on both homes. 1. You, or your spouse if filing jointly, took out any mortgages after Oc- tober 13, 1987, and used the proceeds for purposes other than to buy, build, or improve your home, and all of these mortgages totaled over $100,000 at any time during 2017. The limit is $50,000 if married filing separately. An example of this type of mortgage is a home equity loan used to pay off credit card bills, buy a car, or pay tuition. 2. You, or your spouse if filing jointly, took out any mortgages after Oc- tober 13, 1987, and used the proceeds to buy, build, or improve your home, and these mortgages plus any mortgages you took out on or before October 13, 1987, totaled over $1 million at any time dur- ing 2017. The limit is $500,000 if mar- ried filing separately. If the total amount of all mort- gages is more than the fair market value of the home, addi- tional limits apply. See Pub. 936. Line 10 Enter on line 10 mortgage interest and points reported to you on Form 1098. Home mortgage interest limited. If your home mortgage interest deduction is limited, only enter on line 10 the de- ductible mortgage interest and points that were reported to you on Form 1098. See Limit on home mortgage interest, earlier, for more information about when your deduction is limited. Refund of overpaid interest. If your Form 1098 shows any refund of over- paid interest, don't reduce your deduc- tion by the refund. Instead, see the in- structions for Form 1040, line 21. Interest reported on someone else’s Form 1098. If you and at least one oth- er person (other than your spouse if fil- ing jointly) were liable for and paid in- terest on the mortgage, and the interest was reported on the other person's Form 1098, report your share of the interest on line 11 (as explained in Line 11, later). CAUTION ! Form 1098 doesn’t show all interest paid. If you paid more interest to the re- cipient than is shown on Form 1098, show the larger deductible amount on line 10 and explain the difference. If you are filing a paper return, explain the dif- ference by attaching a statement to your paper return and printing “See attached” to the right of line 10. If you are claiming the mort- gage interest credit (for holders of qualified mortgage credit certificates issued by state or local gov- ernmental units or agencies), subtract the amount shown on Form 8396, line 3, from the total deductible interest you paid on your home mortgage. Enter the result on line 10. Line 11 If you paid home mortgage interest to a recipient who didn’t provide you a Form 1098, report your deductible mortgage interest on line 11. Seller financed mortgage. If you paid home mortgage interest to the person from whom you bought the home and that person did not provide you a Form 1098, write that person's name, identify- ing number, and address on the dotted lines next to line 11. If the recipient of your home mortgage payment(s) is an individual, the identifying number is his or her social security number (SSN). Otherwise, it is the employer identifica- tion number (EIN). You must also let the recipient know your SSN. If you don't show the required information about the recipient or let the recipient know your SSN, you may have to pay a $50 penalty. Interest reported on someone else’s Form 1098. If you and at least one oth- er person (other than your spouse if fil- ing jointly) were liable for and paid in- terest on the mortgage, and the home mortgage interest paid was reported on the other person’s Form 1098, identify the name and address of the person or persons who received a Form 1098 re- porting the interest you paid. If you are filing a paper return, identify the person by attaching a statement to your paper return and printing “See attached” to the right of line 11. CAUTION ! CAUTION ! Line 12 Points Not Reported on Form 1098 Points are shown on your settlement statement. Points you paid only to bor- row money are generally deductible over the life of the loan. See Pub. 936 to figure the amount you can deduct. Points paid for other purposes, such as for a lender's services, aren't deductible. Refinancing. Generally, you must de- duct points you paid to refinance a mort- gage over the life of the loan. This is true even if the new mortgage is secured by your main home. If you used part of the proceeds to improve your main home, you may be able to deduct the part of the points rela- ted to the improvement in the year paid. See Pub. 936 for details. If you paid off a mortgage ear- ly, deduct any remaining points in the year you paid off the mortgage. However, if you refinanced your mortgage with the same lender, see Mortgage ending early in Pub. 936 for an exception. Line 13 Mortgage Insurance Premiums Enter the qualified mortgage insurance premiums you paid under a mortgage in- surance contract issued after December 31, 2006, in connection with home ac- quisition debt that was secured by your first or second home. Box 5 of Form 1098 shows the amount of premiums you paid in 2017. If you and at least one other person (other than your spouse if filing jointly) were liable for and paid the premiums in connection with the loan, and the premiums were reported on the other person's Form 1098, report your share of the premiums on line 13. See Prepaid mortgage insurance premi- ums, later, if you paid any premiums al- locable to any period after 2017. Qualified mortgage insurance is mortgage insurance provided by the De- partment of Veterans Affairs, the Feder- al Housing Administration, or the Rural Housing Service (or their successor or- ganizations), and private mortgage in- surance (as defined in section 2 of the TIP A-8