What is Rent vs Buy Calculator?
The Rent vs Buy Calculator evaluates the financial decision between renting a home and purchasing real estate. The calculation takes into account home price, down payment, mortgage interest rate, annual property taxes, maintenance costs, and home appreciation rates. It compares this against monthly rent, rental inflation, and the opportunity cost of investing the down payment in the stock market to determine the long-term wealth difference.
Formula
Net Cost of Buying = (Mortgage + Tax + Maintenance + Fees) - Equity Build-up - Home Appreciation
Net Cost of Renting = Total Rent Paid - Investment Growth on Down Payment Capital
Benefits of Using Rent vs Buy Calculator
Comprehensive Analysis - Accounts for hidden costs like maintenance, taxes, and transaction fees.
Opportunity Cost - Evaluates what your down payment would earn if invested in mutual funds.
Break-Even Timeline - Identifies the exact year where buying a home becomes cheaper than renting.
Wealth Comparisons - Displays total net worth projections after 10, 20, or 30 years.
Pro Tip: Do not look only at monthly mortgage versus monthly rent. Real estate transaction costs (buying fees, agent commissions, registration) and maintenance fees (typically 1% of home value annually) have a major impact on the decision.
Frequently Asked Questions
It is the average annual rent divided by the home purchase price. A ratio below 5% generally favors renting, while a ratio above 8% favors buying.
Opportunity cost is the potential return you lose by using your cash for a down payment instead of investing it in compounding assets like index funds.
Rents typically rise with inflation. A fixed-rate mortgage protects your housing payment from inflation, making buying more attractive over time.
The 5% rule estimates transaction costs (1%), maintenance (1%), and capital costs (3%) of home ownership. If annual rent is less than 5% of home value, renting is often cheaper.
Not always. If you plan to move within 3 to 5 years, transaction costs and early interest payments will usually make renting more cost-effective.
Reviewed by Rahul Kumar | Founder, WPFixHub
Updated: August 2026