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    PracticeCPA®CPA TCP Practice Exam 2Question 37
    Medium1 markMultiple Choice
    Area I: Individual Compliance and PlanningTCPIndividual TaxEstimated Taxes

    CPA · Question 37 · Area I: Individual Compliance and Planning

    A taxpayer is underpaid on their estimated taxes for Year 1. Their Year 1 tax liability is $50,000. Their Year 0 (prior year) tax liability was $40,000. Their AGI in Year 0 was $160,000. What is the minimum timely payment required to avoid the underpayment penalty (Safe Harbor)?

    Answer options:

    A.

    $40,000

    B.

    $45,000

    C.

    $44,000

    D.

    $50,000

    How to approach this question

    Safe Harbor Rules: 1. 90% of Current Tax. 2. 100% of Prior Tax (110% if Prior AGI > $150k). Pick the smaller number.

    Full Answer

    C.$44,000✓ Correct
    $44,000
    IRC §6654. General rule: Lesser of 90% current tax or 100% prior tax. Exception: If prior year AGI > $150,000, use 110% of prior tax. 110% of $40,000 = $44,000. 90% of $50,000 = $45,000. Lesser is $44,000.

    Common mistakes

    Using 100% of prior year tax despite AGI > $150k.
    Question 36All questionsQuestion 38

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