Florida Judgment Statutory Interest Calculator
Use this tool below to help you estimate statutory interest earned on your Florida judgment. Enter the Judgment Amount, the Time of Entry, and the Through Date. Then, hit Calculate. You can even print the results in PDF format, if needed.
Frequently Asked Questions
Why did I develop this calculator?
I wanted to save time when calculating Florida post-judgment statutory interest, so I made this calculator. Because interest calculations are often miscalculated, even by experienced attorneys, I also created this tool to provide clarity and accuracy for others. My goal is for this calculator to become the trusted standard. However, please independently verify the calculations for your specific case.
Does Florida use simple or compound interest for judgments?
Interest accrues at a simple interest rate unless otherwise specified by an agreement between the parties.
Is there a specific formula to calculate statutory interest?
While the math can get confusing, my formula is based directly on the language of Fla. Stat. § 55.03 and uses the official interest rates posted on the Florida Department of Financial Services’ website: https://www.myfloridacfo.com/division/aa/audits-reports/judgment-interest-rates.
The formula changes based on when the judgment was entered:
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Before July 1, 2011: The interest rate is fixed for the life of the judgment.
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On or after July 1, 2011: The interest rate adjusts annually, as required by Fla. Stat. § 55.03(3).
The reason for this is due to an amendment to Fla. Stat. § 55.03(3) in 2011, which provided for an annually adjusting interest rate. The Florida Supreme Court, however, held that the amendment does not apply to judgments entered between October 1998 and June 30, 2011. See Townsend v. R.J. Reynolds Tobacco Co., 192 So. 3d 1223, 1228–1231 (Fla. 2016).
There are a few technical ambiguities under the law. For example, the Florida Department of Financial Services lists a “Daily Rate as a Decimal,” now rounded to nine decimal places. Using this figure versus the “Rate per Annum” may yield very minor differences due to rounding. I use the daily rate as posted.
The statute also doesn’t address if any interest should be rounded such as for a daily interest rate, for the yearly interest, or even for the total interest. My calculator rounds only once, at the end, to two decimal places for total interest. I do show the rounded yearly total interest, but only for display purposes.
You can find more information on my manual calculations (which are the basis for the calculator formula) in my article related to calculating statutory interest on a Florida judgment. The formula uses (Amount of Judgment) x (Daily Rate as a Decimal) x (Number of Days of Interest) as its starting point.
What’s the biggest mistake made with calculating statutory interest?
The most common error is adjusting the statutory interest on a quarterly basis. While the interest rate is established using the quarterly rate at the time a judgment is obtained, the interest rate is then adjusted annually on January 1 of each year, pursuant to Fla. Stat. § 55.03(3). “While the Chief Financial Officer sets the interest rate quarterly, section 55.03 only provides for an already established interest rate to adjust annually, not quarterly.” Precision Diagnostic, Inc. v. Progressive Am. Ins. Co., 2021 WL 4888426 (Fla. 4th DCA 2021).
When does statutory interest begin to accrue on a Florida judgment?
Interest on a judgment ordinarily runs from the date of its entry. See 32 Fla. Jur 2d Interest and Usury § 29; see Merchant v. Merchant, 433 So. 2d 633, 634 (Fla. 1st DCA 1983) (“Interest on a judgment does not begin to run until the judgment is entered and even a written judgment which has been signed by the court is not “entered” until it has been filed with the clerk.”); and see Alexander v. Kalitan, 263 So. 3d 70, 71 (Fla. 4th DCA 2019) (“Our courts have cited to section 55.03 in recognizing that generally, interest accrues from the date judgment is entered.”).
Should I include today’s date when counting the number of days of interest?
The statute is silent on this point. However, I spoke to an accountant who told me that interest normally accrues on a daily basis. Therefore, in my opinion, if you’re calculating interest “as of today,” do not include today’s date in your day count. As a result, you could enter the “Through Date” for yesterday’s date.
Does the calculator apply to all Florida judgments?
No, there are certain types of judgments where it would not apply.
First, if there is a contractual provision that provides the post-judgment interest rate, then my calculator and § 55.03 would not apply. Additionally, the statute specifically makes exception for certain judgments entered by the Clerk, “pursuant to ss. 55.141, 61.14, 938.29, and 938.30, which shall not be adjusted annually.”
Can the calculator be used for prejudgment interest also?
I do not recommend using this calculator for prejudgment interest. I’ve read conflicting opinions on whether Fla. Stat. § 55.03(3) applies to pre-judgment interest.
In a recent case by the Fourth District Court of Appeal, they stated that it only applies to judgments, not prejudgment interest. Michelis v. Nugent, 2025 WL 1318634, at 4 (Fla. 4th DCA May 7, 2025) (“However, section 55.03 applies to judgments. See Genser, 100 So. 3d at 762. Prejudgment interest is a matter of court-made law, not the application of section 55.03, and should be calculated using the statutory interest rate in effect when the court determines a party is entitled to attorney’s fees.”).
However in a Middle District of Florida case, although not binding, they state the opposite. See Endurance Am. Specialty Ins. Co. v. Liberty Mut. Ins. Co., 2020 WL 9597125, at 12 (M.D. Fla. June 4, 2020) (“As for the amount of such interest, the prejudgment interest rate is controlled by Florida statute and is set quarterly by Florida’s Chief Financial Officer. The applicable prejudgment interest is the rate effective at the time of entitlement and is adjusted annually on January 1 of each year.”).
Can the calculator take into account partial payments?
Not yet. I will work on this if the calculator gets more use. For the time being, you could likely accomplish this by changing the time of entry and through dates and changing the amounts owed.