Final answer:
The day a late fee is assessed varies and is often outlined in the lease agreement between the tenant and landlord. Without specific information from a lease, it's not possible to determine the correct day. Typically, landlords may provide a grace period before applying late fees.
Step-by-step explanation:
The question is regarding the assessment of a late fee by a tenant. According to the reference information provided, a credit card company charges a late fee of $10 when a payment is late, followed by an additional $5 a day for each day the payment remains unpaid.
However, the question seems to be about a rental situation, not a credit card payment. In rental agreements, the day by which the late fee is assessed can vary and is typically stipulated in the lease agreement.
For instance, some landlords may allow a grace period until the 5th of the month before charging late fees, while others may have different terms. It's important to review your specific lease agreement to determine when a late fee may be applied after a rent payment is due.