(1)    Except as provided in sub. (2), the amount of any claim filed in calendar years based upon property taxes accrued in the preceding calendar year shall be determined as follows:

      (a)    The amount of excessive property taxes shall be computed by subtracting from property taxes accrued the amount of 7 percent of the 2nd $5,000 of household income plus 9 percent of the 3rd $5,000 of household income plus 11 percent of the 4th $5,000 of household income plus 17 percent of the 5th $5,000 of household income plus 27 percent of the 6th $5,000 of household income plus 37 percent of household income in excess of $30,000. The maximum excessive property tax which can be utilized is $6,000.

      (b)    The credit allowed under ss. 71.57 to 71.61 shall be limited to 90 percent of the first $2,000 of excessive property taxes plus 70 percent of the 2nd $2,000 of excessive property taxes plus 50 percent of the 3rd $2,000 of excessive property taxes. The maximum credit shall not exceed $4,200 for any claimant. The credit for any claimant shall be the greater of either the credit as calculated under ss. 71.57 to 71.61 as it exists at the end of the year for which the claim is filed or as it existed on the date on which the farmland became subject to a current agreement under subch. II or III of ch. 91, 2007 stats., using for such calculations household income and property taxes accrued of the year for which the claim is filed.

      (c)   

         1.    If the farmland is located in a county which has a certified agricultural preservation plan under subch. IV of ch. 91, 2007 stats., at the close of the year for which credit is claimed and is in an area zoned by a county, city or village for exclusive agricultural use under ch. 91, 2007 stats., at the close of such year, the amount of the claim shall be that as specified in par. (b).

         2.    If the farmland is subject to a transition area agreement under subch. II of ch. 91, 2007 stats., on July 1 of the year for which credit is claimed, or the claimant had applied for such an agreement before July 1 of such year and the agreement has subsequently been executed, and the farmland is located in a city or village which has a certified exclusive agricultural use zoning ordinance under subch. V of ch. 91, 2007 stats., in effect at the close of the year for which credit is claimed, or in a town which is subject to a certified county exclusive agricultural use zoning ordinance under subch. V of ch. 91, 2007 stats., in effect at the close of the year for which credit is claimed, the amount of the claim shall be that as specified in par. (b).

         3.    If the claimant or any member of the claimant’s household owns farmland which is ineligible for credit under subd. 1. or 2. but was subject to a farmland preservation agreement under subch. III of ch. 91, 2007 stats., on July 1 of the year for which credit is claimed, or the owner had applied for such an agreement before July 1 of such year and the agreement has subsequently been executed, and if the owner has applied by the end of the year in which conversion under s. 91.41, 2007 stats., is first possible for conversion of the agreement to a transition area agreement under subch. II of ch. 91, 2007 stats., and the transition area agreement has subsequently been executed, and the farmland is located in a city or village which has a certified exclusive agricultural use zoning ordinance under subch. V of ch. 91, 2007 stats., in effect at the close of the year for which credit is claimed, or in a town which is subject to a certified county exclusive agricultural use zoning ordinance under subch. V of ch. 91, 2007 stats., in effect at the close of the year for which credit is claimed, the amount of the claim shall be that specified in par. (b).

         4.    If the claimant or any member of the claimant’s household owns farmland which is ineligible for credit under subd. 1. or 2. but which is subject to a farmland preservation agreement or a transition area agreement under subch. II of ch. 91, 2007 stats., on July 1 of the year for which credit is claimed, or the owner had applied for such an agreement before July 1 of such year and the agreement has subsequently been executed, the amount of the claim shall be limited to 80 percent of that specified in par. (b).

         5.    If the claimant or any member of the claimant’s household owns farmland which is ineligible for credit under subds. 1. to 4. but was subject to a farmland preservation agreement under subch. III of ch. 91, 2007 stats., on July 1 of the year for which credit is claimed, or the owner had applied for such an agreement before July 1 of such year and the agreement has subsequently been executed, and if the owner has applied by the end of the year in which conversion under s. 91.41, 2007 stats., is first possible for conversion of the agreement to an agreement under subch. II of ch. 91, 2007 stats., and the agreement under subch. II of ch. 91, 2007 stats., has subsequently been executed, the amount of the claim shall be limited to 80 percent of that specified in par. (b).

         6.    If the farmland is located in an agricultural district under a certified county agricultural preservation plan under subch. IV of ch. 91, 2007 stats., at the close of the year for which credit is claimed, and is located in an area zoned for exclusive agricultural use under a certified town ordinance under subch. V of ch. 91, 2007 stats., at the close of such year, the amount of the claim shall be the amount specified in par. (b).

         6m.    If the farmland is located in an agricultural district under a certified county agricultural preservation plan under subch. IV of ch. 91, 2007 stats., at the close of the year for which credit is claimed, and is located in an area zoned for exclusive agricultural use under a certified county or town ordinance under subch. V of ch. 91, 2007 stats., for part of a year but not at the close of that year because the farmland became subject to a city or village extraterritorial zoning ordinance under s. 62.23 (7a), the amount of the claim shall be equal to the amount that the claim would have been under this section if the farmland were subject to a certified county or town exclusive agricultural use ordinance at the close of the year.

         7.    If the farmland is located in an area zoned for exclusive agricultural use under a certified county, city or village ordinance under subch. V of ch. 91, 2007 stats., at the close of the year for which credit is claimed, but the county in which the farmland is located has not adopted an agricultural preservation plan under subch. IV of ch. 91, 2007 stats., by the close of such year, the amount of the claim shall be limited to 70 percent of that specified in par. (b).

         8.    If the farmland is subject to a farmland preservation agreement under subch. III of ch. 91, 2007 stats., on July 1 of the year for which credit is claimed or the claimant had applied for such an agreement before July 1 of such year and the agreement has subsequently been executed, the amount of the claim shall be limited to 50 percent of that specified in par. (b).

   (2)   If the farmland is subject to a certified ordinance under subch. V of ch. 91, 2007 stats., or an agreement under subch. II of ch. 91, 2007 stats., in effect at the close of the year for which the credit is claimed, the amount of the claim is 10 percent of the property taxes accrued or the amount determined under sub. (1), whichever is greater.