Question
How can a taxpayer avoid the estimated-tax penalty?
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Answer
Pay the lesser of 90% current-year tax or 100% prior-year tax.
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Question
What does Circular 230 govern in tax practice?
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Answer
Who may practice before the IRS and their duties.
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Question
Why must a practitioner make reasonable inquiries about client information?
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Answer
Because good-faith reliance ends when information looks incorrect or incomplete.
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Question
How must a practitioner respond to a client error on a return?
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Answer
Promptly notify the client; no duty to correct without consent.
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