Free CRE Underwriting Calculators & Tools

Quick, honest, no sign-up required. Each tool isolates one number a commercial real estate deal turns on. When you're ready for the full 10-year model, deal grade, and PDF, the UpsideIQ underwriting software runs it free.

Cap Rate Calculator

See the broker cap and the true (post-reserves) cap side by side — the gap sellers don't show you.

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DSCR Calculator

Check whether NOI covers debt service — the first test every lender runs.

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Commercial DSCR Calculator

NOI ÷ debt service for any commercial asset — and the minimum coverage each lender expects.

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Multifamily DSCR Calculator

Will your apartment deal clear the 1.25× agency floor? NOI ÷ debt service, instantly.

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DSCR Refinance & Stress Test Calculator

Test your loan against a higher refi rate and a softer NOI — the 2026 maturity-wall question.

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Multifamily Pro Forma Calculator

Units in, returns out — GPR, NOI, cap rate, DSCR, and cash-on-cash in one quick estimate.

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IRR & Equity Multiple Calculator

Estimate levered return and total multiple from a simple cash-flow stream.

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IOS Land Yield Calculator

Rent per acre, land yield, and value at a target cap — built for covered-land plays.

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NNN Lease Analyzer

Triple-net rent, broker vs true cap, and rent coverage for single-tenant deals.

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Rent Coverage Calculator

EBITDAR ÷ rent — does the tenant earn enough to cover the rent? The first test in sale-leaseback underwriting.

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Debt Yield Calculator

NOI ÷ loan amount — the rate-blind, value-blind floor lenders trust most. See whether your loan clears the 8–10% line.

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Equity Waterfall Calculator

See how a deal splits between LP and GP — return of capital, preferred return, GP catch-up, then promote by LP IRR hurdle.

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Yield on Cost Calculator

Stabilized NOI ÷ total project cost — the cap rate you build, and the spread over the market cap that pays you to build it.

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LTC / LTV Calculator

Loan-to-cost and loan-to-value from one set of inputs — and which one actually caps your loan.

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Gross Rent Multiplier Calculator

Price ÷ gross annual rent — the fastest screen there is, with the cap-rate cross-check GRM leaves out.

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Break-Even Occupancy Calculator

The occupancy you must hold to cover expenses and debt — and how much vacancy cushion you have above it.

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Rental Property Cash Flow Calculator

Purchase price, rent, and real expenses in — your true monthly cash flow, cap rate, cash-on-cash, and the 1% rule out.

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Cash-on-Cash Return Calculator

Annual cash flow ÷ the cash you actually put in — the year-one yield on your down payment, closing, and rehab.

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The 1% Rule Calculator

Is the monthly rent at least 1% of the price? The 5-second screen that tells you which deals deserve a full analysis.

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Underwriting an actual sale-leaseback?

Get the one-time Sale-Leaseback Coverage Report — coverage vs. the 1.5–2.0x floor, the break-even EBITDAR growth hurdle, a term-erosion chart, and a senior underwriter's AI read (works-if / breaks-if). No account.

$49 report →

Run a site? Embed a free CRE calculator on your own pages →

From a single calculator to full underwriting software

A CRE underwriting tool turns a property's income, expenses, price, and financing into the numbers that decide a deal. The calculators above each isolate one of them — the cap rate that values the income, the DSCR a lender tests first, the multifamily pro forma from rents to cash-on-cash, the IRR and equity multiple on the exit, the IOS land yield on a covered-land yard, and the NNN lease broker-vs-true cap and rent coverage.

A calculator answers one question at a fixed point. Full underwriting software projects the whole deal across a multi-year hold — escalating rents and expenses, real replacement reserves, a financing and refinance path, an exit sale, and the return metrics that depend on all of it — and then grades the result. That is what UpsideIQ does for multifamily, industrial, and IOS deals: a 10-year DCF, a proprietary deal score, broker-vs-true cap throughout, and an investor-ready PDF — free to start, no spreadsheet required.

New to the process? Start with how to underwrite a deal honestly, or jump to the asset playbooks: multifamily, industrial, and IOS.

Frequently asked questions

What is a CRE underwriting tool?

A CRE underwriting tool turns a property's income, expenses, price, and financing into the numbers that decide a deal — cap rate, NOI, DSCR, cash-on-cash, IRR, and equity multiple. The free calculators here each isolate one metric; full underwriting software like UpsideIQ runs the whole chain — a 10-year DCF, reserves, exit, and a graded deal score — in one model.

Is there free CRE underwriting software?

Yes. These calculators are free with no login. UpsideIQ itself is free to start: you can underwrite a deal end to end — multifamily, industrial, or IOS — and see the deal score and a free preview report before paying anything.

What's the difference between a calculator and full underwriting software?

A calculator answers one question at a fixed point in time (what's the cap rate? does it clear DSCR?). Full underwriting software projects the deal across a multi-year hold — escalating rents and expenses, real replacement reserves, a financing and refinance path, an exit sale, and the return metrics that depend on all of it — then grades the result against your criteria.

Which tool should I start with?

Start with the cap rate calculator to value the income, the DSCR calculator to test whether it finances, and the multifamily pro forma (or IOS land yield for outdoor storage) to see returns. When you're ready for the full picture, run the deal in UpsideIQ.

Get the full underwriting, grade & PDF — free

Tell UpsideIQ your investment criteria once — every deal gets analyzed, graded, and flagged against YOUR targets, not a generic score.