Late Rent Fee Calculator

Calculate a proposed late fee and compare it with monthly rent. This tool does not determine whether the fee is legal; that may depend on state and local law, the lease, and the facts.

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Monthly rent ($)

Late fee charged or proposed ($)

Days late (optional)

Before paying or charging a late fee

Read the lease provision that authorizes the fee.
Check whether state or local law sets a cap, a grace period, or reasonableness requirements.
Confirm when rent was due, when payment was made, and how the lease counts days.
Save the ledger, notices, receipts, and communications.

Explore our landlord-tenant law guides and state law pages.

Disclaimer: This tool performs arithmetic only. It does not determine whether a late fee is enforceable or whether an eviction notice is valid. Check current official sources for your location.