Interactive tool
Multifamily Loan Sizing Calculator
Back into maximum supportable debt from DSCR, debt yield, and LTV—the three metrics that bind most apartment loan term sheets.
Last updated:
Loan inputs
What's the max loan?
Market rent or in-place lease
Annual tax ÷ 12
Hazard premium ÷ 12
Optional
Optional
Max loan results
Max loan amount
At 7.25% / 30-yr · keeps DSCR ≥ 1.0x
- Max monthly P&I
- $2,370
- Monthly fixed costs (tax + ins + HOA)
- $430
- Max purchase @ 75% LTV
- $463,223
- Max purchase @ 80% LTV
- $434,272
How this works
We solve for the maximum monthly P&I such that rent ÷ (P&I + fixed costs) ≥ your target DSCR, then back-calculate the loan amount using standard amortization. The purchase price ranges assume 75% and 80% LTV at closing. Adjust the target DSCR to model different lender requirements.
DSCR target comparison
| Target DSCR | Max P&I / mo | Max loan | Max price @ 75% |
|---|---|---|---|
| 0.75x | $3,303 | $484,235 | $645,646 |
| 1.0x | $2,370 | $347,418 | $463,223 |
| 1.25x | $1,810 | $265,327 | $353,770 |
Save your results
Want a real lender-fit read?
Submit your numbers for a free underwriting and lender-fit review — usually within one business hour. No credit pull.
Related Resources
Hand-picked next steps — go deeper on this topic, compare alternatives, or run the numbers.
Guide
Multifamily Underwriting Basics for 5+ Unit Deals
Comprehensive underwriting framework for US commercial multifamily acquisitions and refinances on 5+ unit properties.
Guide
Debt Yield and LTV: A Practical Framework
Practical debt yield and LTV framework for multifamily sponsors balancing proceeds, resilience, and refinance risk.
Guide
Capital Stack Design for Value-Add Multifamily
Capital stack design guide for value-add multifamily projects, covering senior debt, mezzanine, pref equity, and sponsor equity.
Loan type
Fannie Mae Multifamily Loan — Agency Stabilized
Fannie Mae multifamily loan execution for stabilized US apartment buildings (5+ units)—agency underwriting, DSCR, debt yield, and fit vs bridge or CMBS.
Loan type
Bank Balance-Sheet Multifamily Loan
Execution framework for Bank Balance-Sheet Multifamily Loan in US commercial multifamily financing, including fit, constraints, and risk controls.
Loan type
Bridge Loan for Value-Add Multifamily
Execution framework for Bridge Loan for Value-Add Multifamily in US commercial multifamily financing, including fit, constraints, and risk controls.
How to size a multifamily loan
Commercial multifamily proceeds are usually limited by the lowest of three calculations:
- DSCR constraint: Max Debt Service = NOI ÷ Min DSCR → solve for loan from payment
- Debt yield constraint: Max Loan = NOI ÷ Min Debt Yield
- LTV constraint: Max Loan = Property Value × Max LTV
The binding constraint determines proceeds. Always stress NOI and rates in downside cases.
Worked example: 56-unit stabilized acquisition
NOI: $980,000. Value: $14,000,000. Lender floors: 1.25x DSCR, 9.25% debt yield, 75% LTV. At a 6.5% rate and 30-year amortization, annual debt service on a $10.5M loan ≈ $798,000.
- DSCR max ≈ $10.5M (1.23x at that balance—near floor)
- Debt yield max: $980,000 ÷ 0.0925 ≈ $10.59M
- LTV max: $14M × 75% = $10.5M
Proceeds likely bind near $10.5M. Explore structure trade-offs in our agency vs bridge execution guide.