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               2005 Tax Rate Schedules. Summary: These are the Tax Rate Schedules used to determine your 2005 taxes if your income is $100,000 or more.Schedule X--Use if your filing status is Single.  Schedule Y-1--Use if your filing status is Married filing jointly or Qualifying widow(er).  Schedule Y-2--Use if your filing status is Married filing separately.  Schedule Z--Use if your filing status is Head of household.  | 
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