F-1120ES: Declaration/Installment of Estimated Florida Corporate Income/Franchise Tax (Revision)
Florida · Florida DOR · Used for tax years 2024, 2025, 2026
Form F-1120ES is used to declare and pay installments of estimated Florida corporate income/franchise tax. It reports the installment amount, any overpayment from last year applied to that installment, and the resulting payment amount.
Who files this form
Every domestic or foreign corporation, or other entity subject to tax under Chapter 220, Florida Statutes, must declare estimated tax if its income tax liability for the taxable year will be more than $2,500.
When it's due
For tax years 2024, 2025, and 2026, the form gives this general schedule rather than specific calendar due dates:
- June 30 tax year end: Pay on or before the last day of the 4th, 6th, and 9th months of the taxable year, and the last day of the tax year.
- All other tax year ends: Pay on or before the last day of the 5th, 6th, and 9th months of the taxable year, and the last day of the tax year.
Each installment must be 25 percent of the estimated tax.
What you'll need
The form asks for the following information:
- Name and mailing address, including city, state, and ZIP code.
- FEIN and taxable year-end date.
- Installment number and amount of the installment.
- Any overpayment from last year credited to estimated tax and applied to this installment.
- Contact person's name, phone number, and email address.
The text does not list supporting documents to attach.
How to file
Online: Go to www.floridarevenue.com to file online.
By mail: Make checks payable to the Florida Department of Revenue and mail to:
Florida Department of Revenue
5050 W Tennessee St
Tallahassee FL 32399-0135
Complete the payment calculation:
- Enter the amount of this installment on Line 1.
- Enter the prior-year overpayment applied to this installment on Line 2.
- Subtract Line 2 from Line 1 and enter the payment amount on Line 3.
- Transfer Line 3 to the “Estimated tax payment” box on the front.
Common mistakes
- Not following the box format: Write within the boxes, with one number per box. If typing, type through the boxes.
- Forgetting to transfer the payment amount: Copy Line 3 to the “Estimated tax payment” box on the front.
- Not clearly marking an amendment: Write “Amended” on Form F-1120ES and complete Lines 1 through 3 for the correct installment. Pay any increase in estimated tax on time.
- Failing to comply with filing or payment requirements: The form warns that interest and penalties will be assessed.
Questions people ask
How much estimated tax must I pay with each installment?
Each installment must be 25 percent of the estimated tax.
Can I apply an overpayment from last year?
Line 2 is for an overpayment from last year credited to estimated tax and applied to this installment. Subtract that amount from Line 1 to calculate the payment on Line 3.
How do I amend a declaration?
Write “Amended” on Form F-1120ES and complete Lines 1 through 3 for the correct installment. You may file an amendment between installment dates for the taxable year. Any increase in estimated tax must be paid on time.
What happens if I do not follow the filing or payment requirements?
The form states that failure to comply with the law on filing a declaration or paying estimated tax will result in interest and penalties.