Model vacancy impact on NOI and cash flow
For landlords and portfolio managers understanding how different vacancy assumptions change net operating income and annual returns.
Vacancy Rate Calculator
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Create Free AccountWhat it does
The Vacancy Rate Calculator models how different vacancy loss assumptions impact your NOI, cash flow, and annual returns by reducing gross income. Enter annual rent and various vacancy scenarios — 0%, 5%, 10%, 15% — to see the exact income reduction and corresponding return degradation.
Vacancy risk separates underwritten assumptions from reality. Conservative investors assume 5-10% vacancy; markets with quality tenants might sustain lower vacancy; distressed markets might face 15%+ vacancy periods. By modeling vacancy scenarios upfront, you avoid assuming 100% occupancy and setting yourself up for underperformance against projections.
Who it's for
- Prudent investors stress-testing assumptions and modeling downside scenarios before acquisition
- Lenders evaluating DSCR using realistic vacancy assumptions rather than perfection scenarios
- Market analysts comparing vacancy risk across different sub-markets and property types
- Syndicators presenting conservative return projections and validating investor return targets
How it works
Enter full occupancy rent
100% occupancy monthly rent for all units or single property.
Test vacancy rates
Model 0%, 5%, 10%, and 15% vacancy scenarios.
View NOI and cash flow impact
See how $1000/month vacancy compounds into annual impact.
Why it matters
See exact cash flow impact of even small vacancy changes
Identify whether negative cash flow turns positive with full occupancy
Build realistic vacancy reserves
Decide whether to aggressively reduce vacancy or accept it
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Every investment strategy — rental, flip, BRRRR, mortgage, commercial, wealth building.
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Conservative, base, and optimistic 1/2/5/10-year return modeling.
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Enter a property address to pre-fill value, rent, and tax data automatically.
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Mortgage rate fields pre-populate with Federal Reserve interest rate data.
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Every formula audited against professional underwriting standards.
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Frequently asked questions
What vacancy rate is realistic?
Class A urban: 3–5%; Class B suburban: 5–8%; Class C or rural: 8–12%. Historical average is 5–7%.
Should I always budget worst-case vacancy?
Use realistic market rates, not worst case. However, budget 1–2% contingency above market for unknowns.
Does vacancy have a seasonal pattern?
Often yes — summer and end-of-month are peak move times; January and February are slow. Model average but recognize patterns.
Can I reduce vacancy below market?
Sometimes — via aggressive rent pricing, superior location, or premium amenities. But don't assume you'll beat market; model conservatively.
Is this calculator free to use?
Yes — create a free Investor Starter account to run 1 calculator per day. No credit card required. Upgrade to Core ($49/mo) for unlimited access to all 67 calculators.
How accurate are the results?
Results are only as accurate as your inputs. The formulas use industry-standard real estate investment math. Always verify with a licensed professional before committing capital.
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