Real Estate Investment Calculator

Analyze house flips, rental properties, short-term rentals, and BRRRR investments in one tool. Switch strategies below, or go straight to a dedicated calculator: Rental, Flip, BRRRR, Cap Rate, or Cash-on-Cash Return.

Deal Analysis

Real-time calculations based on local market factors

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Cash on Cash ROI

3.92%

Negative trend

Yearly Return

Monthly Cash Flow

$229

Negative trend

Net Operating Income

Cap Rate

7.44%

Positive trend

Actual Property ROI

Est. Market Value

$212,571

Positive trend

Based on 7% Cap

10-Year Growth Projection

Equity
Cash Flow

Purchase Details

The upfront cost of the property.
$
$
After Repair Value. This is your target sale price. By default, it stays synced to your (Purchase + Rehab) basis unless edited.
$
%
$
20%
Loan Principal$160,000
%
Y

Operational Data

Operating Expenses
The total monthly income generated by the property.
$
Used to estimate the property's market value based on its net operating income.
%
%
Annual HOA or association fees.
$
%
$
%
%
%

How Comps Calculator Works

  1. Choose your investment strategy — Buy & Hold Rental, Fix & Flip, BRRRR, or Short-Term Rental, using the tabs in the sidebar.
  2. Enter the property numbers — purchase price, financing terms, rent, repair budget, and operating expenses.
  3. Review the results — cash flow, Cash-on-Cash ROI, Cap Rate, NOI, or projected flip profit, updated instantly as you type.
  4. Adjust your assumptions — test different purchase prices, rents, repair costs, or financing scenarios to see how sensitive the deal is to each one, or use Stress-Test mode to model a downturn.

Why analyze a deal before you buy?

Small changes in a handful of inputs can materially change a projected return. A vacancy rate that's a few points higher than expected, a repair budget that runs over, a financing rate that moves before closing, or an ARV that's optimistic by 5% can each turn a solid-looking deal into a break-even one — sometimes without the difference being obvious from the property listing alone. Running the numbers before making an offer (and re-running them if any input changes) is what separates a deal you can defend to a lender or a partner from one you're guessing on.

For deeper walkthroughs of specific topics — ARV, the 70% Rule, vacancy's effect on ROI, and more — see the full guides library.