Tax Deductions in Schedule A is somewhat confusing if you read the instructions with schedule A in terms of ducting state taxes paid in a particular year especially when it references the taxes listed on the previous years tax form. The instructions should include the clarification that taxes with held the previous year are considered paid in that year. You can only deduct taxes paid in addition to any taxes which were withheld. So if you got a refund the previous year your previous years with holding paid in the previous year paid all you taxes in the previous year and you did not pay any in the next year for the last year. If your withholding was not enough to pay your total state tax bill you can deduct the additional tax you paid for last years return in the next year.