How a late fee adds up
Most late fee policies have three parts. A grace day, which is the last day rent can arrive without a fee. A one-time fee that hits once rent passes that day. And often a daily amount that keeps adding for every day after the grace day until the rent lands.
The daily part only starts counting after the grace day, not after the due date, which is where most hand-calculated late fees go wrong. If rent is due on the 1st, the grace day is the 5th, and payment arrives on the 12th, the daily amount applies to seven days, not eleven and not twelve.
- Days that earn the daily fee = days late minus the grace day
- Total = the one-time fee plus the daily amount for those days
- Nothing is charged while rent is inside the grace window
Check the total against your state's cap before you charge it
Late fee rules are state law. Some states cap what you can charge as a share of monthly rent, or require the fee to be a reasonable estimate of what the late payment cost you. A daily fee that looks small can pass a cap in the first week and keep climbing, which is why this shows the running total as a percentage of rent.
Read your own state's rule and your own lease before charging. RentCaddie does not tell you what your limit is, and no calculator should.
Late fees you charge by hand are late fees you forget
The reason to automate is not the arithmetic. A fee has to be applied on the morning it is earned, every time, for every resident, or it stops being a policy and becomes a thing you do when you notice. Residents work that out quickly.
In RentCaddie the rule lives on the lease or the charge and posts itself on the day it is earned. Recording a payment dated before a fee accrued offers to take that fee back off, because a fee that was never earned should not sit on somebody's ledger.
A worked example
Rent of $1,800 was due on the 1st with a grace day on the 5th. The policy is a $75 one-time fee plus $10 for each day after the grace day. Payment arrives on the 13th, which is 12 days late.
- Monthly rent
- $1,800
- Grace day
- 5
- Days late
- 12
- Days earning the daily fee (12 minus 5)
- 7
- One-time fee
- $75
- Daily fee (7 days at $10)
- $70
That is 8.1% of one month's rent. Two more days would push it past 10%, the point to re-read your state's rule.
Common questions
Does the daily fee start on the due date or after the grace period?
Can I charge a late fee if my lease does not mention one?
Is there a cap on late fees?
Should I waive a late fee for a good long-term resident?
These calculators are educational and are not legal, tax, lending, or accounting advice. Rules vary by state and by city, and your lease governs your own properties. Check your own requirements before relying on any number here.