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Break-Even Leverage Calculator

Leverage past a limit flips a deal negative. This calculator shows the max LTV you can take and still cover debt service with current NOI.

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$
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Break-even LTV

83.3%

Max loan at break-even

$8,333,333

Safe LTV (75% of break-even)

62.5%

How the math works

Break-even loan = NOI ÷ mortgage constant. Break-even LTV = that loan ÷ price. Anything above breaks cash flow.

Underwrite reserves and stress cases to stay meaningfully below break-even LTV. Deals that pencil only at maximum leverage are fragile — small NOI slips turn them cash-negative.

Editorial noteMaintained by EveryCalc - Reviewed June 2026

EveryCalc calculators are designed for fast, practical estimates with transparent inputs and no required account. We use plain formulas, visible assumptions, and related tools so visitors can check the result from more than one angle.

Results are informational only. For financial, tax, legal, medical, construction, or other high-impact decisions, verify the output against primary sources or a qualified professional.

Learn more about our review process on the EveryCalc methodology page.

How this calculator works

What this page estimates

This Break-Even Leverage Calculator is built to give a quick, browser-based estimate for break-even leverage. Leverage past a limit flips a deal negative. This calculator shows the max LTV you can take and still cover debt service with current NOI. The inputs stay on the page during normal use, and the result should be treated as an estimate for planning, comparison, or education rather than professional advice.

Calculation approach

The calculator applies the standard relationship implied by the inputs, then formats the answer so it can be checked and reused. For finance tools, the most important step is using consistent units, rates, time periods, and assumptions before comparing the result with another calculator or outside quote.

Example workflow

For example, start with a realistic value you already know, change one input at a time, and watch how the answer moves. That makes it easier to tell whether the result is being driven by the main amount, the rate, the time period, or a unit conversion.

Practical checks

  • Use current, real-world numbers when the result affects money, health, tax, or legal decisions.
  • Run a low, base, and high case when the inputs are estimates.
  • Check the related calculators below when the next decision depends on a different assumption.

How to interpret the break-even leverage result

Best use

Use the result as a planning number for comparing payments, rates, returns, tax reserves, or cash-flow choices before you request a quote or make a commitment.

Cross-check

Compare the answer with the contract, lender estimate, tax form, brokerage statement, payroll record, or invoice that will control the real-world outcome.

Watch for

Do not rely on a single optimistic rate, return, or fee assumption. Money pages work best when you run low, base, and high cases and keep professional advice separate from the estimate.

This page belongs to the Finance calculator library, so the answer should be read in the context of the decision you are modeling rather than as a universal rule.

Before relying on this break-even leverage estimate

Most calculator mistakes come from the inputs, not the arithmetic. Use this short audit before you reuse the answer in a spreadsheet, quote, application, or important conversation.

Confirm source numbers

Match balances, rates, fees, taxes, income, and payment dates against the lender quote, payroll record, tax form, statement, invoice, or contract.

Separate cash flow from total cost

A lower monthly payment can still cost more over time if fees, interest, taxes, or a longer term are hidden in the structure.

Run conservative cases

Test at least one higher-cost or lower-return case before using the output for a purchase, refinance, investment, loan, or tax decision.

Rerun this page when the rate, price, term, fee, tax rule, income, expense, or expected holding period changes.

How to Use

  1. Enter purchase price.
  2. Enter NOI (annual).
  3. Enter mortgage constant (debt service ÷ loan).
  4. Read break-even LTV.

Frequently Asked Questions

What is mortgage constant?

Annual debt service ÷ loan amount. Combines rate and amortization. A 30-yr 7% loan has ~7.98% constant; interest-only 7% = 7.00%. Always use the loan's actual constant.

Why LTV matters?

Above break-even LTV, cash flow goes negative. Negative cash flow deals require owner to feed the asset, which burns equity fast. Always stay under break-even.

Safe cushion?

Underwrite to 70-75% of break-even LTV. Reserves protect against expense surprises. Max-leveraged deals lose money when one tenant defaults or taxes reassess.

How do institutional LPs use this?

Institutional LPs expect sensitivity tables at every underwriting — base case plus at least two stress scenarios. Submit this output alongside traditional pro formas. LPs read quickly for two things: does the base case clear target IRR, and does the stress case produce positive equity multiple. If both yes, deal is investable. If stress goes negative, more equity or a lower purchase price is needed.

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