Mortgage Guide

Rent vs Buy Calculator

Appreciation and investment returns are assumptions. Tax deductions are not included.

Published by the Mortgage Guide editorial team. Rate assumptions and content updated October 2026. This page is educational. It is not a loan offer, approval, or personalized financial advice.

How this calculator works

  1. The buyer pays the down payment and a 2% closing-cost assumption at the start.
  2. The renter is modeled as investing that same cash and earning the return you enter.
  3. Each year, the person who spends less on housing invests the difference.
  4. Owner net worth is home value minus the loan balance and a selling-cost assumption.

The break-even year is only as good as the assumptions

A higher appreciation rate, a lower selling cost, or a longer stay can move the year when buying shows the higher net worth. The reverse is also true.

The model leaves out the mortgage-interest deduction and maintenance surprises. Use it to see how the assumptions interact, not as a prediction of either net worth.

Sources

Common questions

Why is the renter's net worth invested cash?

The down payment and closing costs are money the renter still has. The model grows that cash at the investment return you choose, which is an assumption.

Does buying always win if I stay seven years?

No. Change appreciation, rent growth, or the return on invested cash and the comparison can flip.

  • Mortgage Affordability Calculator

    Estimate a home price from income and monthly debts using the 28/36 guideline, with taxes, insurance, and PMI labeled as assumptions.

  • Mortgage Payment Calculator

    Estimate a US mortgage payment with principal, interest, taxes, insurance, HOA, and PMI. See the payoff date and amortization schedule.

  • Down Payment Calculator

    Compare 5%, 10%, 15%, and 20% down. See cash required, the loan amount, the payment, and whether estimated PMI applies.

Longer guides on these topics are linked from the guides library.