Rent Late Fee Calculator

Enter the late fee terms from the lease to calculate exactly what is owed on a given day late. Many states and cities limit late fees, so this calculator shows the math only and does not tell you whether a fee is legal.

New Added Oct 18, 2026

Results

Total late fee

$95.00

The late fee owed is $95.00. Confirm it complies with your state and local limits.

Past grace period?	Yes
Initial fee	$75.00
Days of daily fee	2
Daily fees	$20.00
Cap applied?	No

Estimate only. Not legal or financial advice.

How this calculator works

If the days late are within the grace period, no fee applies. On the first day after the grace period, the initial fee is assessed: flat, a percentage of rent, or the greater of the two.

Each additional day late adds the daily fee, until the optional maximum is reached.

Formulas

Initial fee = flat, rent × %, or max(flat, rent × %)Daily days = days late − grace days − 1 (minimum 0)Total = min(cap, initial + daily days × daily fee)

Assumptions & limits

Many states and cities cap late fees, require a minimum grace period, or require fees to be "reasonable." This tool does not check legality (last reviewed 2026-10-18). Confirm your state and local rules and follow your lease.
How days are counted (weekends, holidays, due-date conventions) depends on your lease and local law.

Assumptions last reviewed 2026-10-18.

Disclaimer: This calculator provides estimates for educational purposes only and is not legal, tax, lending or financial advice. Results depend on your inputs and simplifying assumptions. Confirm with a qualified lender, attorney, CPA or title/escrow professional before making decisions.

Frequently asked questions

How much can a landlord charge for a late fee?

It depends on your state and sometimes your city. Some states set a fixed percentage cap (often around 5% of rent), others require a grace period, and some only require the fee to be reasonable. Check your local law before setting or charging a fee.

When does a late fee start?

Usually the day after the grace period stated in the lease ends. If rent is due on the 1st with a 5-day grace period, the fee typically applies starting on the 6th.