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Calcimator

Real Estate Investment Calculator

Comprehensive real estate investment calculator with cash flow analysis, cap rate calculation, renovation ROI, stock comparison, and 1031 exchange planning.

About this calculator

This calculator bundles five distinct real estate investment analyses behind one mode selector, each answering a different question a real investor actually asks. Cash Flow Analysis projects monthly and annual cash flow after every operating expense and mortgage payment, plus a 10-year equity and appreciation projection, giving the full financial picture of holding a specific rental property. Cap Rate & Rental Yield strips out financing entirely to compute Net Operating Income and cap rate — the metric professional investors use to compare properties independent of how each buyer finances their purchase — alongside quick screening rules like the 1% rule (monthly rent as a percentage of price) and debt service coverage ratio. Renovation ROI estimates how much value a specific home improvement project adds versus what it costs, using cost-recouped ranges by project type modeled on the kind of figures the annual Cost vs.

Value report (published by Zonda/JLC, formerly Remodeling Magazine) tracks nationally — a fresh coat of paint frequently returns more than its cost, while a major kitchen remodel typically recoups only a majority of what it costs even though it's often the single highest-cost renovation. Real Estate vs Stocks projects a property's leveraged total return (appreciation plus cash flow plus mortgage paydown, all funded by a fraction of the purchase price as a down payment) against a simple stock market compounding projection over the same holding period, making the leverage effect that amplifies real estate returns explicit. And 1031 Exchange models the capital gains tax an investor defers by rolling sale proceeds into a replacement property instead of cashing out, including 'boot' — taxable cash or reduced-value that results from trading down rather than up in property value. Every mode uses simplified, illustrative rates for taxes, appreciation, and expenses rather than your specific jurisdiction's real figures, so weigh every dollar result here as a side-by-side scenario comparison, and get a real appraisal, tax professional, or lender's numbers before acting on any of them.

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Figures current as of 2026. Source: Zonda / JLC Cost vs. Value Report (formerly published by Remodeling Magazine)

How to Use This Calculator
  1. Select an Analysis Type (Cash Flow, Cap Rate, Renovation ROI, Real Estate vs Stocks, or 1031 Exchange).
  2. Enter Purchase Price, Down Payment %, Interest Rate, and Loan Term for your financing scenario.
  3. Input Monthly Rent and adjust advanced fields like Vacancy Rate, Maintenance, and Property Management %.
  4. Review Monthly Cash Flow, Cap Rate, and Cash-on-Cash Return to assess investment quality.
  5. Switch to Renovation ROI mode to evaluate improvement projects, or 1031 Exchange mode to estimate tax deferral.

What each input means

Analysis Type
Calculation mode to use.
Purchase Price
The price paid for the property.
Down Payment
Upfront payment amount.
Interest Rate
Annual interest rate as a percentage.
Loan Term
Length of the loan in the specified time unit.
Closing Costs
Fees and costs to close the loan.
Monthly Rent
Monthly rental income or rent payment.
Vacancy Rate
Expected percentage of time the property is vacant.
Renovation Budget
Total cost of planned renovations.

How this is calculated

Figures and sources

Engine last updated . Checked against 3 independently-derived tests — how we verify calculators. Built by Paul Gunder, a software engineer, not a licensed financial, medical, or legal professional.

Frequently Asked Questions

What's the practical difference between Cap Rate and Cash-on-Cash Return?

Cap rate measures a property's return based on its full purchase price, ignoring financing entirely, which makes it useful for comparing properties as pure assets regardless of how each buyer finances them. Cash-on-cash return instead measures return only against the actual cash you put in — your down payment plus closing costs — which is why a leveraged property with a smaller down payment often shows a much higher cash-on-cash return than its cap rate, since the same dollar of profit is being measured against a smaller invested amount.

Why does a cheap renovation like paint show a higher ROI than an expensive one like a kitchen remodel?

Renovation ROI in this calculator reflects typical value-recouped percentages by project type, in the same pattern the annual Cost vs. Value report (published by Zonda/JLC, formerly Remodeling Magazine) tracks nationally year after year: smaller cosmetic projects like paint and landscaping tend to return a value increase close to or even exceeding their cost, since they're relatively inexpensive fixes that meaningfully improve buyer perception. Major structural projects like a full kitchen remodel cost far more in absolute dollars and typically recoup a smaller percentage of that cost, even though the total value they add to the home is often larger in raw dollar terms.

Why does real estate often show a higher annualized return than stocks in the comparison mode, even with a lower appreciation rate than the stock return assumption?

Leverage is the key driver — you're only putting down a fraction of the purchase price as cash, but you benefit from appreciation, cash flow, and mortgage paydown on the full property value, which amplifies your effective return relative to the actual cash invested. This same leverage effect cuts both ways in reality: it magnifies losses just as much as gains if property values decline or cash flow turns negative, which this calculator's return projection doesn't stress-test.

What is 'boot' in a 1031 exchange, and why does it matter?

Boot is any value you receive that isn't reinvested into like-kind replacement property — most commonly, trading down into a less expensive property than the one you sold, which leaves cash or reduced equity in your pocket that the IRS still taxes even within an otherwise tax-deferred exchange. This calculator flags boot whenever your new property price is lower than your current property's value, since trading up avoids boot entirely by reinvesting the full proceeds.

The questions that sit next to this one — chosen by subject, including calculators filed under a different category.

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