Vacancy Loss & Economic Vacancy Calculator — Rental Property
Calculate your rental property's true economic vacancy — combining physical vacancy days, collection losses, bad debt write-offs, and tenant concessions for accurate NOI.
Physical vs Economic Vacancy
Physical vacancy = days unit was empty / 365. Economic vacancy adds: collection losses (tenant moved out owing rent), bad debt (uncollectable), concessions (1 month free), discounts. Economic vacancy = REAL income lost vs gross potential rent.
Market Benchmark 5-8%
Class A residential: 4-6% economic vacancy typical. Class B/C: 7-12%. Single-family: often <5%. If yours exceeds market, investigate: pricing too high, marketing weak, slow turn process, or tenant screening too tight (too few applicants).
The Hidden Cost
Owners track physical vacancy but miss collection loss. Example: 4% physical + 3% collection loss + 1% bad debt + 2% concessions = 10% economic vacancy. On $30k/year rent that's $3,000 lost — easily $50k in valuation lost at 6% cap rate.
Reduce Economic Vacancy
Faster turns (2-week max between tenants). Tighter screening with backup applicants ready. Online rent payments + auto-pay (cuts collection loss). Use security deposit responsibly (covers most bad debt). Avoid heavy concessions in soft markets.
Source: irem.org property management benchmarks, nahb.org rental survey 2026. Last updated: May 2026.
Frequently Asked Questions
Why is concession counted as vacancy?
Conceptually it's lost income. Offering 1 month free rent reduces effective annual income — same impact as 1 month of vacancy. Underwriters and appraisers treat concessions as vacancy in cap-rate valuations.
Should I track per unit or per property?
Per unit for granular insight (identify problem units), then roll up to property. Per-portfolio averages hide outliers — one chronic vacant unit can dominate.
Is 'turnover loss' separate?
Yes — and additive. Turnover loss = paint, cleaning, repair, listing cost between tenants. Typically $500-$2,000 per turn. Not included in vacancy but eats NOI.
How do appraisers use this?
Subtract economic vacancy from GPR to get EGI, then EGI minus operating expenses = NOI. NOI ÷ cap rate = value. Higher economic vacancy → lower value. Reducing 2% economic vacancy on $50k GPR adds ~$1,000 NOI = $16k value at 6% cap.
Is my data private?
Yes. All calculations run in your browser. Inputs are never sent, stored, or shared.