Calculate flat-rate or percentage-based late fees. Includes grace period guidance and a state-by-state limit reference.
Late fees are one of your most important tools for encouraging on-time rent payment — but only if they're clearly defined in your lease and comply with your state's limits. This calculator helps you determine the correct fee amount whether you use a flat rate or a percentage of monthly rent, and shows the total owed including unpaid rent.
— Results
Most states allow landlords to charge late fees, but many regulate how much you can charge, when you can start charging, and whether you must provide a grace period. Charging a fee not authorized by your lease or above your state's limit can expose you to penalties.
| State | Max Late Fee | Required Grace Period |
|---|---|---|
| California | Must be "reasonable" (courts often uphold ~5–8%) | None required by law |
| New York | $50 or 5% of rent (whichever is less) | 5 days |
| Texas | 12% (4+ units) / 10% (1–3 units) | 2 days |
| Florida | No statutory cap | 3 days (recommended) |
| Georgia | No statutory cap | None required |
| Illinois | No statutory cap (varies by city) | None statewide |
| Pennsylvania | No statutory cap | None required |
| North Carolina | $15 or 5% (whichever is greater) | 5 days |