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26 CFR 301.6233(a)-1 - Interest and penalties determined
In the NOPPA, the IRS determines an imputed underpayment of $160,000 ($400,000 40 percent) and that the 20-percent penalty applies to the entire imputed
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2017 Publication 936
Jan 31, 2018 If you pay off your home mortgage early, you may have to pay a penalty. You can deduct that penalty as home mortgage interest provided the
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Topic no. 653, IRS notices and bills, penalties and interest
The failure-to-file penalty is usually five percent of the tax owed for each month, or part of a month that your return is late, up to a maximum of 25%. If your
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