Rent vs. Buy Calculator
Compare the financial cost of renting versus buying a home over time.
Last updated: February 15, 2026
Table of Contents
How to Use the Rent vs. Buy Calculator
- Enter Home Price: The target property cost.
- Rent Comparison: What would it cost to rent a similar home?
- Timeline: How long do you plan to stay? Buying usually wins over longer periods due to transaction costs.
- Market Assumptions: Adjust appreciation and interest rates to see different scenarios.
Formula & Methodology
Rent vs. Buy Analysis
We compare the total cost of ownership vs. renting by simulating wealth accumulation over time.
Inputs & Capital Assumptions:
- Initial Capital: We assume you have the Down Payment (20%) + Buying Closing Costs (3%) available in cash.
- Renter Scenario: You invest this Initial Capital in a diversified index fund (6% annual return). You pay rent. If Rent < Buying Cost, you invest the monthly savings.
- Buyer Scenario: You deploy the capital to purchase the property. You pay Mortgage Principal & Interest + Property Taxes + Maintenance + Homeowners Insurance. If Buying Cost < Rent in later years, you invest the surplus.
Net Worth Formulas:
$$ \text{Net Worth Rent} = \text{Investment Portfolio Value (Initial Capital + Compounded Monthly Savings)} $$
$$ \text{Net Worth Buy} = (\text{Current Home Value} - \text{Remaining Loan Balance} - \text{Estimated 6% Selling Costs}) + \text{Buyer Investments} $$
Deciding whether to rent or buy a home is a complex financial decision that goes far beyond comparing a monthly mortgage payment to rent. Our advanced Rent vs. Buy Calculator helps you simulate your net worth over time by accounting for opportunity costs, inflation, taxes, and market returns.
By inputting your local housing market data, you can find your break-even year—the point where buying becomes financially superior to renting.
How the "Break-Even Year" is Actually Calculated
Comparing rent directly to a monthly mortgage payment is one of the most common financial mistakes prospective buyers make. A mortgage payment includes principal paydown (which builds equity) and interest (a sunk cost), while homeownership also adds recurring non-recoverable expenses like property taxes, homeowners insurance, and ongoing maintenance (typically 1% of the property value per year).
The Break-Even Year is the exact point in time when the cumulative net worth of buying (taking into account home appreciation, amortization, and deducting a 6% selling commission) exceeds the net worth of renting (where the upfront down payment and monthly savings are compounded in a diversified investment portfolio).
Years 1–3: The Drag
Upfront 3% closing costs and early mortgage interest tilt the financial advantage toward renting.
Years 4–7: The Crossover
Compounding home appreciation on the full asset value overtakes rent inflation and closes the gap.
Years 8–30: Wealth Compounding
Fixed mortgage payments protect against inflation while market rents surge, building generational net worth.
Worked Example: $400,000 Home vs. $2,200/Month Rent
Let's examine a real-world case study with realistic market variables to see how the numbers compound year by year:
| Timeline | Home Value (3% Appr.) | Net Worth (Buying)* | Net Worth (Renting)** | Financial Winner |
|---|---|---|---|---|
| Year 1 | $412,000 | $69,800 | $105,400 | Renting (+ $35.6k) |
| Year 3 | $437,100 | $106,300 | $128,900 | Renting (+ $22.6k) |
| Year 5 | $463,700 | $149,500 | $156,200 | Renting (+ $6.7k) |
| Year 7 (Break-Even) | $492,000 | $199,400 | $187,800 | Buying (+ $11.6k) |
| Year 10 | $537,600 | $287,100 | $241,500 | Buying (+ $45.6k) |
| Year 30 (Mortgage Paid Off) | $970,900 | $912,600 | $495,200 | Buying (+ $417.4k) |
* Buying net worth accounts for mortgage balance paydown, appreciation, and deducts 6% broker commission on sale.
** Renting net worth reflects upfront $92,000 down payment + closing capital invested at 6% return, plus monthly savings invested.
The Price-to-Rent Ratio: A Fast Screening Rule
Before running detailed 30-year projections, economists and real estate analysts use the Price-to-Rent Ratio as a quick rule of thumb to assess local housing market valuation:
For our $400,000 home renting for $2,200/mo ($26,400/yr), the ratio is $400,000 ÷ $26,400 = 15.15. Here is how to interpret your ratio:
Strong Favor: Buying
Purchasing is very cost-effective relative to local rents. Buyers usually break even within 3 to 5 years.
Moderate / Neutral
Balanced market. Decision hinges primarily on whether you plan to remain in the property for 6+ years.
Strong Favor: Renting
Homes are priced at high multiples of rent. Renting and diligently investing the surplus typically yields superior wealth.
The 5% Rule Explained
Specific to high-interest environments, the 5% Rule is a quick heuristic to gauge affordability. It estimates the annual cost of capital and maintenance at 5% of the property value.
| Home Price | 5% Annual Cost | Break-Even Monthly Rent |
|---|---|---|
| $300,000 | $15,000 | $1,250 |
| $500,000 | $25,000 | $2,083 |
| $800,000 | $40,000 | $3,333 |
Note: If you can rent a similar home for LESS than the Break-Even Rent, renting is mathematically cheaper (using this simplified rule).
The Power of Opportunity Cost
The biggest factor often ignored in the "rent vs buy" debate is Opportunity Cost.
When you buy, you lock up a large Down Payment (e.g., $50,000) in the house. If you rented instead, that $50,000 could be invested in the S&P 500 or other assets. Over 30 years, the compound growth of that invested capital often rivals or beats real estate appreciation.
Our calculator uniquely handles this: We simulate an investment portfolio for the Renter using the Down Payment cash and any monthly savings difference. This provides a fair "Apples-to-Apples" net worth comparison.
When Does Renting Make More Sense Even If Buying Looks Cheaper?
Online calculators often make homeownership look like an automatic win over 30 years, but real life carries risks that numbers on a spreadsheet don't show. Consider renting if:
- You may move within 3–5 years: Transaction costs (3% purchase closing + 6% agent commission on sale) can easily wipe out several years of equity.
- Your emergency fund is depleted by the down payment: When a water heater bursts or the roof leaks ($10,000+), an owner must pay out of pocket. If closing leaves you with zero reserves, homeownership becomes a high financial hazard.
- You value career mobility: Being able to relocate for a 25% salary bump in another city or state without selling an illiquid physical asset is a valuable financial superpower.
- Current mortgage rates make payments unaffordable: If mortgage rates push your monthly obligation past 35% of your gross income, check our Mortgage Affordability Calculator to ensure you don't become house-poor.
Frequently Asked Questions
What is the "Break-Even Year"?
The year when the accumulated net worth of buying exceeds that of renting. Selling before this year typically means you lose money compared to renting.
Does this include maintenance costs?
Yes, we assume an annual maintenance cost of 1% of the home value, which increases slightly over time.
What about tax deductions?
This simple calculator does not factor in mortgage interest tax deductions, as they depend heavily on individual filing status and standard deduction limits.
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💡 Quick Rule of Thumb
Planning to stay less than 5 years? Renting almost always wins after accounting for 6% selling commissions and closing costs.
Staying 7+ years? Fixed-rate homeownership shields you from rising rents and turns housing costs into equity.
🛡️ Verified Methodology
This calculator factors in opportunity cost, maintenance (1%/yr), property taxes, homeowners insurance, and sales transaction fees to deliver an unbiased comparison.