Definition
Credit loss is the income you were supposed to collect but didn’t, because a resident or tenant failed to pay (or only partially paid). In operating statements this is often labeled bad debt, uncollected rent, or credit loss.
Credit loss reduces effective gross income (EGI) and therefore reduces NOI—even if the unit is occupied.
Where It Shows Up in Underwriting
Most multifamily models start with Gross Potential Rent (GPR), subtract vacancy, and then subtract credit loss to arrive at collected rental income.
Common structure
- Gross Potential Rent (GPR): rent if everyone paid in full, on time.
- Less: Vacancy Loss: lost rent from empty units and downtime.
- Less: Credit Loss: lost rent from nonpayment / delinquencies in occupied units.
- Plus: Other Income: parking, pet, RUBS, fees (often also subject to some credit loss).
How It’s Measured
Credit loss is typically measured as a percentage of scheduled rent (and sometimes other income), based on trailing financials and current collections performance.
Common formula
- Credit Loss (%) = Uncollected charges during period ÷ Scheduled charges during period
Why It Matters
- NOI durability: high credit loss is a signal that collections are weak or tenant quality is deteriorating.
- Lender comfort: unstable collections can tighten DSCR and affect proceeds.
- Operational focus: credit loss is often fixable through process (screening, follow-up, payment plans, notices).
What Drives Credit Loss
- Tenant screening: income verification, credit standards, rental history.
- Rent-to-income pressure: when rents outrun wages, delinquencies tend to rise.
- Management execution: notice cadence, follow-up discipline, online payment adoption.
- Unit condition: deferred maintenance can increase disputes, move-outs, and nonpayment.
- Local rules and timelines: eviction process length and enforcement can influence collections behavior.
Example
A 100-unit property has scheduled monthly rent of $180,000. During the month, $4,500 remains uncollected after normal collection efforts.
- Credit Loss (%) = 4,500 ÷ 180,000 = 2.5%
- If underwriting assumes 1.0% credit loss, the model may be overstating collected income by about $2,700/month (2.5% − 1.0% = 1.5% of $180,000).
Credit Loss vs Vacancy vs Concessions
- Vacancy loss: units are empty or in downtime (no tenant paying rent).
- Credit loss: units are occupied but rent isn’t fully collected.
- Concessions: rent reductions/promotions (collected income is intentionally discounted).
Common Pitfalls
- Using “normal†years only: ignoring recent delinquency trends can hide risk.
- Netting out move-out balances incorrectly: write-offs can be delayed and spike in certain months.
- Ignoring other income leakage: RUBS and fees may also be partially uncollectible.
- Assuming collections magically improve: improvement requires process, staffing, and enforcement.