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Fourplex DSCR Calculator

A fourplex loan usually has to clear a debt-service coverage ratio of at least 1.25×. The top of the residential scale; coverage requirements tighten because the loan is underwritten more like commercial debt.

Property Details

Purchase price, before closing costs

Total scheduled rent from all units

Taxes + insurance + maintenance + vacancy

Rentable units, 1 for a single family rental

Financing (optional)

Closing + repairs, cash

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Live results

Cap Rate

6.3%

Net Operating Income

$22,200

Cash-on-Cash Return

1.4%

Gross Rent Multiplier

11.2×

1% Rule

0.7%

Below 1%

DSCR

1.06×

See your cash flow & 30-yr outlook

Monthly Cash Flow

Live • updates as you type

$104/mo

$1,243 a year after the mortgage

This property is cash flow positive at $104/mo based on your inputs.

Ledger

Net operating income$22,200
Mortgage payments−$20,957
Left for you, per year
$1,243

Rent and expenses grow 3% a year; mortgage stays fixed.

Annual Cash Flow (30 Years)

Pays for itself from year 1

Total (30 years): $427,463

Rent and expenses grow 3% a year; your mortgage payment stays fixed.

C

Deal GradeC

Fails the math today, price is too high or rent too low relative to 6.3% cap and 1.4% cash-on-cash.

DSCR requirements by property type

Coverage floors are not universal. The more units and the less predictable the income, the higher the bar a lender sets. Your asset class is highlighted below.

Typical lender minimum DSCR by property type
Property typeTypical min DSCRIllustrative rate
Duplex1.20×6.8%
Triplex1.20×6.9%
Fourplex1.25×7.0%
Single-Family Rental1.15×6.5%
Short-Term Rental (Airbnb)1.25×7.5%
Multifamily (10+ Units)1.20×6.6%

Floors and rates are representative market norms for illustration, not a quote. Confirm the current requirement with your lender.

The fourplex coverage math

DSCR is net operating income divided by the annual mortgage payment. On a representative $350,000 fourplex at $2,600 a month rent and $9,000 of annual expenses, at 7.0% over 30 years with 25% down:

NOI = $31,200 − $9,000 = $22,200

Annual debt service = $1,746 × 12 = $20,957

DSCR = $22,200 ÷ $20,957 = 1.06×

At 1.06× against a 1.25× floor, this example misses the typical requirement. When coverage falls short, the fix is usually to lower the loan amount or raise NOI, because coverage is exactly the ratio of the two.

What moves fourplex coverage

  • A larger down payment lowers the loan, which lowers the annual payment and lifts DSCR.
  • A lower interest rate cuts debt service directly, the fastest lever on coverage.
  • A longer term spreads principal over more years, easing the annual payment.
  • Higher rent or lower expenses raise NOI, the numerator nobody can quote away.

Check the full picture with the cap rate calculator, then run your own coverage on the interactive DSCR calculator.

Frequently asked questions

What DSCR does a fourplex need to qualify?

Lenders typically want at least 1.25× of debt-service coverage on a fourplex loan. Coverage is net operating income divided by the annual mortgage payment; 1.25× means the property earns 125% of what it owes each year.

How is DSCR calculated on a fourplex?

DSCR = NOI ÷ annual debt service. On a representative $350,000 deal at $2,600 a month rent and $9,000 of expenses, NOI is $22,200 against $20,957 of debt at 7.0%, a DSCR of 1.06×.

What happens if fourplex DSCR comes in below 1.25×?

A lender that requires 1.25× will usually decline or ask you to raise the down payment, pay down the rate, or bring more reserves. Lowering the loan amount lifts coverage directly, because it cuts the annual payment that divides into NOI.

Is a fourplex harder to finance than a single-family rental?

The top of the residential scale; coverage requirements tighten because the loan is underwritten more like commercial debt. Compared with a single-family rental, expect the coverage bar and the rate to move with the number of units and the income type rather than the property's size alone.