---
title: "Rental Property Calculator: Cash Flow, Cap Rate, DSCR"
description: "Free rental property calculator: cash flow, cap rate, cash on cash and DSCR, with a rehab contingency and a GREEN, YELLOW or RED verdict against your own…"
url: "https://builtbyestrada.ai/tools/rental-calculator/"
lang: "en"
---

# Rental property calculator

FREE TOOL

Price, rent, costs and the loan in; cash flow, cap rate, cash on cash and DSCR out. The rehab gets a contingency, because something always turns up once the walls are open.

The property

For what shows up when the walls open: foundation, roof, plumbing, wiring, termites. Raise it for older houses.

What it should appraise for once the work is done: sold comps of fixed up homes nearby. No rehab? Use the price.

Costs

Texas appraisal districts set the value every January 1; after a sale or a rehab it can climb to the price or the after rehab value. The seller's homestead exemption and cap end when you buy.

County, city, school district and the rest, added up. The appraisal district or tax office site lists them.

A stand in until you have a quote. Insurers price on the cost to rebuild, the roof, and the wind and flood zone.

Yearly premium from a landlord (dwelling) policy quote for this address. It replaces the rate.

Financing

Your minimums

Verdict

GREEN

Meets all your minimums.

Monthly cash flow

$792

Cash flow per unit

$396

Cash on cash return

11%

DSCR (NOI ÷ loan payment)

2.11

Cap rate on total cost

9.6%

Cash needed to buy and rehab

$86,406

Monthly loan payment

$716

Net operating income (NOI) per month

$1,508

Rehab total with contingency

$44,706

Property taxes per year

$3,360

Insurance per year

$1,680

GREEN: meets all your minimums. YELLOW: misses one and still cash flows. RED: loses money each month, or misses two or more.

Estimate only. It doesn't know the property, your market or your lender. Check results before an offer, contract or purchase.

Your numbers, calculated in your browser. Nothing is saved or sent.

The full workbook adds BRRRR refinance, rehab by area with a behind the walls checklist, hard money and HELOC, a 10-year projection and a lender summary. [See the Rental & BRRRR Analyzer →](https://builtbyestrada.ai/products/rental-analyzer/)

[Download this calculator as Excel (free) ↓](https://builtbyestrada.ai/downloads/rental-analyzer-free.xlsx)

## How the math works

These are the definitions the calculator uses, the same ones as the free Excel file.

Collected rent = rent × (1 − vacancy)  
Operating costs = (property taxes + insurance) ÷ 12 + HOA + management + maintenance and capex reserve + utilities you pay  
NOI = collected rent − operating costs  
Cash flow = NOI − loan payment  
Cap rate = NOI × 12 ÷ (price + closing costs + rehab with contingency)  
Cash on cash = cash flow × 12 ÷ cash needed  
DSCR = NOI ÷ loan payment

Management is a percentage of the rent you collect. The maintenance and capex reserve is a percentage of the full rent. Cash needed is the price, closing costs and rehab with contingency, minus the loan, plus the loan costs. The loan payment is a fixed rate payment on the price minus the down payment.

The verdict checks four of your minimums: cash flow per unit, cash on cash, DSCR and cap rate.