Get 2010 California Form 5805 -- Underpayment Of Estimated Tax ... - Efile

If you have reasonable cause, we may waive penalties. You may file a reasonable cause - claim for refund to request that we waive a penalty for reasonable cause.

Form 2210 (or Form 2220 for corporations) will help you determine the penalty amount. You should figure out the amount of tax you have underpaid.

Corporations, tax-exempt organizations subject to the unrelated business income tax, and private foundations use Form 2220 to determine: Whether they are subject to the penalty for underpayment of estimated tax and, if so, The amount of the underpayment penalty for the period that applies.

Taxpayers required to make estimated payments may owe penalty and interest for underpayment, late payment, or for failing to make estimated tax payments. Use the Michigan Underpayment of Estimated Income Tax Form MI-2210 to compute penalty and interest.

When an underpayment penalty is calculated on a tax return, this penalty is automatically added to the amount you owe on Form 1040 U.S. Individual Income Tax Return, Line 37.

25% of the total tax amount due, regardless of any payments or credits made on time.

Use form FTB 5805 to see if you owe a penalty for underpaying your estimated tax and, if you do, to figure the amount of the penalty. Generally, you do not have to complete this form. The Franchise Tax Board (FTB) can figure the amount of any penalty for you and send you a bill after you have filed your return.

Use form FTB 5805, Underpayment of Estimated Tax by Individuals and Fiduciaries, to see if you owe a penalty for underpaying your estimated tax and, if you do, to figure the amount of the penalty.

5% of the amount due: From the original due date of your tax return. After applying any payments and credits made, on or before the original due date of your tax return, for each month or part of a month unpaid.