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

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Key Tax Numbers for 2017

Exemptions

Each allowable exemption (21.1) $ 4,050
Phaseout starts/ends (21.12)
 Joint return/Qualifying widow/widower $313,800/$436,300
 Head of Household $287,650/$410,150
 Single $261,500/$384,000
 Married filing separately $156,900/$218,150

Standard Deduction (13.1)

Joint return/Qualifying widow/widower $ 12,700 
Head of Household $ 9,350
Single $ 6,350
Married filing separately $ 6,350
Dependents-minimum deduction (13.5) $ 1,050
Additional deduction if age 65 or older, or blind (13.4)
 Married-per spouse, filing jointly or separately $ 1,250 ($2,500 for age and blindness)
 Qualifying widow/widower $ 1,250 ($2,500 for age and blindness)
 Single or head of household $ 1,550 ($3,100 for age and blindness)

Long-term Care Premiums (17.15)

Limit on premium allowed as medical expense
 Age 40 or under $ 410
 Over 40 but not over 50 $ 770
 Over 50 but not over 60 $ 1,530
 Over 60 but not over 70 $ 4,090
 Over 70 $ 5,110

IRA Contributions

Traditional IRA contribution limit (8.2) $ 5,500
 Additional contribution if age 50 or older but under 70½ $ 1,000
 Deduction phaseout for active plan participant (8.4)
  Single or head of household $ 62,000 – $ 72,000
  Married filing jointly, two participants $ 99,000 – $ 119,000
  Married filing jointly, one participant
   Participant spouse $ 99,000 – $ 119,000
   Non-participant spouse $ 186,000 – $ 196,000
  Married filing separately, live together, ...

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