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DSCR Calculator

Estimate your debt service coverage ratio to see whether rental income covers your mortgage payments, helping you understand lender qualification thresholds.

Quick answer: Estimate a simplified NOI-to-P&I coverage ratio while making lender-definition and threshold differences explicit. Enter Monthly Rental Income, Monthly Operating Expenses, and Monthly Mortgage Payment (P&I) to personalize the estimate. It returns Debt Service Coverage, Monthly Net Operating Income, and Monthly Cash Flow After Debt Service so you can compare the impact before choosing a next step. Use it to compare payment, equity, rate, and timing tradeoffs before applying or changing a loan.

SWReviewed by SwitchWize Research Desk · Last reviewed July 20, 2026
Debt Service Coverage
100.00%
Debt Service Coverage
100.00%
Monthly Net Operating Income
$1,800
Monthly Cash Flow After Debt Service
$0
Diagnostic

In this simplified NOI-to-P&I scenario, coverage is 100.00% of the entered mortgage payment.

Use this as a screening result only; lender definitions and approval thresholds vary.

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What to do next

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Your action plan
  1. 1

    Set the target and timeline for this plan

    Estimate a simplified NOI-to-P&I coverage ratio while making lender-definition and threshold differences explicit.

  2. 2

    Pressure-test one alternate scenario before deciding

    Assumptions change the answer, especially when rates, taxes, or timing matter.

  3. 3

    Save the result to Money Map or use the linked next action

    Turn the result into a prioritized action instead of treating it as a one-off number.

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This is an educational estimate, not tax, legal, investment, or lending advice. Tax rules, rates, and eligibility change and depend on your full situation. Confirm with a qualified professional or the provider before acting.

Calculator action path

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About mortgage rates

Mortgage rates depend on loan type (30-yr fixed, 15-yr fixed, ARM, FHA, VA, jumbo), your credit score, down payment, points paid, loan amount, property state, and whether you're purchasing or refinancing. The calculator above uses a representative market rate for payment estimates, your actual rate will vary.

For a personalized rate comparison, use the tool below to see lenders ranked by APR, loan type, and your profile.

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Mortgage rates shown on SwitchWize compare pages include loan type, assumed FICO, LTV, and points. Representative only. Verify all terms directly with the lender. Advertising disclosure

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Frequently Asked Questions

Everything you need to know.

What does an example DSCR Calculator calculation look like?
Using this calculator's own default assumptions, a monthly rental income of $2,500, monthly operating expenses of $700 and monthly mortgage payment (p&i) of $1,800 produces an estimated debt service coverage of 100.0% and monthly net operating income of $1,800. Enter your own numbers above to see how it changes for your situation.
Why do lenders care about DSCR instead of just looking at my credit score?
Credit score reflects your personal payment history, but DSCR shows whether this specific property generates enough income to pay its debt regardless of your other assets or income. A property with strong DSCR can sustain itself even if your personal finances weaken, which is what matters for investment real estate lending.
What happens if my DSCR is below 1.0?
A ratio below 1.0 means the property's net operating income does not fully cover the debt service, so you would need to contribute cash from other sources each month to make the mortgage payment. This increases your risk and typically makes lenders either deny the loan or require a larger down payment to offset the shortfall.
Is the DSCR Calculator free to use?
Yes. SwitchWize calculators are free, and you do not need an account to run scenarios or view the result.
Does using the DSCR Calculator affect my credit score?
No. Using a calculator does not trigger a credit check. A credit impact can occur only if you apply directly with a lender, card issuer, or provider.
Are the results personalized financial advice?
No. Calculator outputs are educational estimates based on the inputs you enter. Review assumptions and confirm terms directly with providers before making a financial decision.
What should I do after seeing the result?
Use the recommendation module on this page to compare investment property loans, or run Money Map to compare this home & mortgage decision with your other opportunities.
How does SwitchWize choose related offers?
Related offers are matched by the calculator surface (mortgage) and ranked using SwitchWize data such as rate, fees, trust signals, product fit, and switching friction. Paid relationships do not change organic ranking order.
How fresh are the rates and offers shown?
Rate and offer data is reviewed on a recurring cadence and every offer module shows review context or links to the methodology and disclosure pages.
Where can I see the ranking methodology?
The SwitchWize methodology page explains how rate freshness, editorial review, affiliate disclosure, and category ranking factors work.
Can Money Map use this result?
Yes. Money Map is the broader diagnostic path: it compares savings, mortgage, cards, and debt so you can see whether this calculator result is your highest-impact next move.

Why This Matters

Lenders use DSCR to decide whether to approve a loan and at what terms: a ratio that shows strong income relative to debt service reduces their risk and often improves your borrowing power. Understanding your NOI and how it compares to your debt obligations clarifies whether your rental property generates enough cash flow to sustain itself, and by how much. This ratio works because it isolates the property's ability to service debt from your personal finances, which is how lenders evaluate investment real estate.

How to Use It

  1. 1Enter your total monthly rental income from all units or lease agreements.
  2. 2Enter your total monthly operating expenses, including property taxes, insurance, maintenance, utilities, and management fees.
  3. 3Enter your monthly mortgage payment covering principal and interest only.
  4. 4Review your monthly net operating income, your debt service coverage ratio, and your remaining cash flow after the mortgage payment is made.
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