Real Estate Cash Flow Calculator

Use our free Cash Flow Analysis Calculator to run the numbers before you buy or lease your next investment property. Whether you’re a first-time investor or managing a growing portfolio, this tool helps you understand income, expenses, and returns so you can make informed decisions.

Why Use a Cash Flow Calculator?

Real estate investing is all about the numbers. A property might look good on the surface, but the true performance comes down to monthly cash flow, net operating income, and long-term returns. Our calculator breaks down every factor that impacts your bottom line:
  • Property purchase and financing details

  • Gross rental income and additional revenue streams

  • Operating expenses and reserves

  • Key investment metrics including cap rate, cash-on-cash return, and DSCR

This way, you can see how profitable (or risky) a deal is before you commit.

Property Details

Start with the basics—purchase price, down payment, and closing costs. These figures establish your total cash investment and loan amount, the foundation for measuring returns.

Rental Income

Input your monthly rent along with any extra income streams like pet fees, parking, storage, or laundry. The calculator automatically totals your gross monthly income, giving you a clear picture of potential revenue.

Mortgage Details

Every investor needs to know their monthly mortgage payment. Enter principal, interest, loan terms, or adjust manually to match your Monthly Payment.

Operating Expenses

Factor in the costs that eat into profit. The calculator accounts for:
  • Vacancy reserves

  • Property management fees

  • Leasing costs

  • Property taxes & insurance

  • HOA dues

  • Repairs & maintenance reserves

  • Utilities (owner-paid)

  • CapEx reserves for big-ticket items

  • Miscellaneous costs (landscaping, pest control, admin)

This provides a realistic look at net income, not just gross rent.

Key Metrics

Get instant calculations on the numbers that matter most to investors:
  • Net Operating Income (NOI) – annual profit before financing

  • Cap Rate – property yield compared to price

  • Cash-on-Cash Return – ROI based on your cash invested

  • Debt Service Coverage Ratio (DSCR) – ability to cover debt payments

  • Monthly & Annual Cash Flow – what’s left in your pocket

Scenario Analysis

Markets change—rents rise, expenses shift. Test rent increases to see how small changes impact your cash flow. Understand how your deal performs today and in future conditions.

Break-Even Analysis

Find out the rent amount required to break even on your property. This helps you measure risk and set realistic goals for occupancy and rental growth.

Investment Summary

At the end, you’ll get a snapshot of your deal:
  • Total cash investment

  • Loan amount

  • Rent-to-payment ratio

  • Gross rent multiplier

It’s a quick way to compare deals side by side.

Disclaimer

This calculator is for educational and estimation purposes only. Real estate investing involves risk, and actual results may vary. Always consult with a licensed professional before making purchase decisions.

Next Step: Run the Numbers with a Pro

Want a second opinion on your deal? Our in-house investment specialists can help you analyze cash flow, compare financing options, and spot opportunities other investors miss.

© 2025 Deal Smith Realty All rights reserved.

Deal Smith Realty LLC
551 S Interstate Highway 35 #300
Round Rock, TX 78664 
(512) 377-6586
DRE#: 714810

[email protected]