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J.K. Lasser's Your Income Tax 2018 by

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Part 1 Filing Basics

In this part, you will learn these income tax basics:

  • Whether you must file a return
  • When and where to file your return
  • Which tax form to file
  • What filing status you qualify for
  • When filing separately is an advantage for married persons
  • How to qualify as head of household
  • How filing rules for resident aliens and nonresident aliens differ
  • How to claim personal exemption deductions for yourself, your spouse, and your dependents.

Do You Have to File a 2017 Tax Return?

If you are— You must file if gross income for 2017 is at least
Single  
Under age 65 $ 10,400 
Age 65 or older on or before January 1, 2018 11,950
Married and living together at the end of 2017  
Filing a joint return—both spouses under age 65 20,800
Filing a joint return—one spouse age 65 or older on or before January 1, 2018 22,050
Filing a joint return—both spouses age 65 or older on or before January 1, 2018 23,300
Filing a separate return (any age) 4,050
Married and living apart at the end of 2017  
Filing a joint or separate return 4,050
Head of a household maintained for a child or other relative (1.12)  
Under age 65 13,400
Age 65 or older on or before January 1, 2018 14,950
Widowed in 2015 or 2016 and have a dependent child (1.11)  
Under age ...

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