Late Rent Fee Calculator

Why late fees are limited at all

A late fee is legally treated as liquidated damages — a pre-agreed estimate of what the delay costs the landlord — not as a penalty. That distinction is why most states require fees to be reasonable: a $500 fee on a $1,000 rent looks like punishment, and courts routinely strike such fees down. About a dozen states replace that judgment call with a hard number, such as 5% of rent in Delaware, Nevada, and Maryland, 4% in Maine, or 8% in Hawaii and Minnesota.

Grace periods do the quiet work

A grace period is a window after the due date during which no late fee can be charged, even if the lease says otherwise. Massachusetts gives tenants 30 days; Maine 15; Connecticut 9 (monthly leases); Colorado, Delaware, North Carolina, Tennessee, and Virginia 5; Oregon 4; Nevada 3; Texas 2. In the other half of the states, rent is technically late the day after it is due — though most landlords still build a few days into their own policy to keep tenants happy.

The “reasonable” states

If your state has no statutory cap — like California, Florida, Illinois, or New York-adjacent New Jersey — the fee must still be defensible. A widely used benchmark is about 5% of monthly rent, which courts and mediators rarely question. Whatever you charge must be written into the lease before rent comes due; a fee invented after a late payment is unenforceable in nearly every state.

Watch out for local rules

Cities, counties, and housing programs can be stricter than the state. Chicago caps late fees where Illinois state law does not; senior and subsidized housing in New Jersey gets a five-business-day grace period; and D.C. tenants cannot be evicted over late fees at all. Always check the local layer before finalizing a number.