The IRS says to use Form 1120-W to calculate C corp estimated tax payments, 1120-S for an S corporation. Payments are due on the 15th day of the fourth, sixth, ninth and 12th months of the tax ...

Form 1120-S: U.S. Income Tax Return for an S Corporation is used to report the income, losses, ... Tax and Payments: Excess net passive income, estimated tax penalty, etc.

For more information, please refer to IRS Form 1120-W. ... If you don't pay your estimated taxes, you could end up owing more money when you file your tax return next year.

Affected taxpayers must still file Form 2220, Underpayment of Estimated Tax by Corporations, with their federal income tax return, even if they owe no estimated tax penalty. Form 2220 must be ...

Despite repeatedly doubling down on the stance that first quarter estimated tax payments were due on April 15, ... (the filing and payment deadline was not extended for Form 1120-C or for Form ...

Enter the resulting income tax payable on page 1, Line 31 of Form 1120. Reduce the total income tax payable for any estimated tax payments made during the year and overpayments applied from prior ...

Corporate taxpayers will still need to file Form 2220 with their federal income tax return, even if they don't owe an estimated tax penalty. "Form 2220 must be completed without including the CAMT ...

Payments for estimated taxes are due on four different quarterly dates throughout the year. ・1Q — April 15, 2025 ... ・Form 1120 extended return — October 15, 2025 ...