Back Rent Owed Calculator
Calculate the total amount of back rent owed, including any applicable late fees and daily interest accrued over the missed payment period.
Formula
Gross Rent Owed = Monthly Rent × Months Missed
Net Unpaid Principal = Gross Rent Owed − Partial Payments Made
Total Late Fees = Late Fee Per Month × Months Missed
Daily Interest Rate = Annual Interest Rate ÷ 365
Interest Accrued = Net Unpaid Principal × Daily Interest Rate × Days Overdue
Total Back Rent Owed = Net Unpaid Principal + Total Late Fees + Interest Accrued
Assumptions & References
- Interest is calculated using simple (non-compounding) daily interest based on the net unpaid principal.
- The daily interest rate is derived by dividing the annual rate by 365 days.
- Late fees are applied once per missed month regardless of how many days within that month are overdue.
- Partial payments are subtracted from gross rent before interest is calculated, reducing the interest-bearing balance.
- This calculator does not account for jurisdiction-specific rent control laws, eviction moratoriums, or court-ordered payment plans — consult a local attorney or housing authority for legal advice.
- Reference: Simple interest formula I = P × r × t, where P = principal, r = daily rate, t = days overdue.