What Is Effective Rent?
Effective rent is what you actually collect—gross rent minus vacancy-loss, credit-loss, and concessions. A property with $3,000 gross rent and 6% vacancy loses $180 to vacancy; effective rent is $2,820. Use effective rent (not gross) when calculating noi and cash-flow. Conservative underwriting uses 8–10% vacancy in many markets.
Effective rent is the rental income you actually collect after accounting for vacancy loss, credit loss (bad debt), and concessions—the real number that flows to your bottom line.
At a Glance
- What it is: Rent collected after vacancy, credit loss, concessions
- Why it matters: Drives accurate noi and cash-flow projections
- Formula: Gross rent − vacancy − credit loss − concessions
- Typical vacancy: 5–10% depending on market and property type
- Use it for: Deal analysis, refinance underwriting, budgeting
Effective Rent = Gross Rent − Vacancy Loss − Credit Loss − Concessions
How It Works
Vacancy loss. Units sit empty between tenants. In a stable market like Indianapolis, 5–7% vacancy might be realistic. In a softer market or with a difficult property, 8–10% is safer. On $4,000 gross, 8% vacancy = $320/month lost.
Credit loss. Tenants who don't pay or pay late. Evictions, write-offs, and partial payments. Typically 1–3% of gross in a well-managed property. On $4,000 gross, 2% = $80/month.
Concessions. Move-in specials, free rent, waived fees. A half-month free on a $1,200 unit = $600 one-time hit. Amortize over the lease term for monthly impact.
The bottom line. Effective rent feeds into effective-gross-income (EGI). EGI minus operating-expenses = noi. Using gross rent instead of effective rent overstates income and makes bad deals look good.
Real-World Example
Nina in Atlanta. Nina analyzed a 4-unit in a B neighborhood. Gross rent: $4,200. She used 8% vacancy ($336) and 1.5% credit loss ($63). Effective rent: $3,801. Her operating-expenses were $1,680. Noi = $3,801 − $1,680 = $2,121. At a 6.5% cap-rate, the property was worth about $327,000. The seller wanted $355,000. Using gross rent would have shown noi of $2,520 and "justified" $388,000—she would have overpaid.
Pros & Cons
- Reflects reality, not optimism
- Prevents overpaying based on gross rent
- Aligns with lender underwriting
- Improves deal-analysis accuracy
- Requires market-specific vacancy assumptions
- Can feel pessimistic if you're used to gross numbers
Watch Out
- Underestimating vacancy: New investors often use 3–5%; many markets warrant 8–10%
- Ignoring credit loss: Even good properties have some non-payment
- Concession creep: Free rent and waivers add up; track them
Ask an Investor
The Takeaway
Effective rent is the number that matters. Always underwrite with vacancy, credit loss, and concessions baked in. It keeps you from overpaying and from being surprised when reality doesn't match the pro forma.