Rent vs. Buy Decision Engine
Should you buy a home or rent and invest the difference? Compare 30-year net wealth trajectories, calculate unrecoverable sunk costs, and discover your exact break-even year.
Rent vs. Buy Decision Report
Comparative Net Wealth & Opportunity Cost Analysis
Renting & compounding the down payment in index funds remains superior over the full 30-year span.
Option A: Home Purchase ParametersProperty
Option B: Renting & Investing ParametersPortfolio
Detailed Financial Snapshot at Year 10
30-Year Year-by-Year Financial Projection Schedule
| Year | Home Value | Remaining Debt | Buyer Net Equity | Renter Portfolio | Decision Advantage |
|---|---|---|---|---|---|
| Yr 1 | $467k | $356k | $83k | $116k | Renting (+$33k) |
| Yr 2 | $485k | $352k | $104k | $143k | Renting (+$39k) |
| Yr 3 | $503k | $347k | $126k | $173k | Renting (+$47k) |
| Yr 4 | $522k | $342k | $149k | $206k | Renting (+$57k) |
| Yr 5 | $542k | $337k | $173k | $241k | Renting (+$68k) |
| Yr 6 | $563k | $331k | $198k | $279k | Renting (+$81k) |
| Yr 7 | $584k | $325k | $224k | $320k | Renting (+$97k) |
| Yr 8 | $606k | $319k | $251k | $365k | Renting (+$114k) |
| Yr 9 | $629k | $312k | $279k | $414k | Renting (+$135k) |
| Yr 10 ★ | $653k | $305k | $309k | $467k | Renting (+$158k) |
| Yr 11 | $678k | $297k | $340k | $524k | Renting (+$184k) |
| Yr 12 | $704k | $289k | $372k | $587k | Renting (+$214k) |
| Yr 13 | $731k | $281k | $406k | $655k | Renting (+$249k) |
| Yr 14 | $759k | $271k | $442k | $729k | Renting (+$287k) |
| Yr 15 | $787k | $261k | $479k | $809k | Renting (+$330k) |
| Yr 16 | $817k | $251k | $518k | $897k | Renting (+$379k) |
| Yr 17 | $848k | $239k | $558k | $992k | Renting (+$434k) |
| Yr 18 | $881k | $227k | $601k | $1.10M | Renting (+$495k) |
| Yr 19 | $914k | $214k | $645k | $1.21M | Renting (+$564k) |
| Yr 20 | $949k | $200k | $691k | $1.33M | Renting (+$641k) |
| Yr 21 | $985k | $186k | $740k | $1.47M | Renting (+$726k) |
| Yr 22 | $1.02M | $170k | $791k | $1.61M | Renting (+$822k) |
| Yr 23 | $1.06M | $153k | $844k | $1.77M | Renting (+$928k) |
| Yr 24 | $1.10M | $135k | $900k | $1.95M | Renting (+$1.05M) |
| Yr 25 | $1.14M | $116k | $958k | $2.14M | Renting (+$1.18M) |
| Yr 26 | $1.19M | $96k | $1.02M | $2.34M | Renting (+$1.32M) |
| Yr 27 | $1.23M | $74k | $1.08M | $2.57M | Renting (+$1.48M) |
| Yr 28 | $1.28M | $51k | $1.15M | $2.82M | Renting (+$1.66M) |
| Yr 29 | $1.33M | $26k | $1.22M | $3.08M | Renting (+$1.86M) |
| Yr 30 | $1.38M | $0 | $1.29M | $3.38M | Renting (+$2.08M) |
Renting & Investing Wins by $157,969
With current market rates, renting and compounding the down payment in index funds outpaces buying over the entire 30-year period.
Option A: Home Purchase Details
Mortgage, property taxes, maintenance & appreciation
Option B: Renting & Investing Details
Monthly rent, inflation & stock market compounding
The full down payment amount is invested immediately in index funds on Day 1.
30-Year Net Worth Trajectory: Buying vs. Renting & Investing
Visualizing cumulative equity vs. compounded investment portfolio over time
How to Make a Smart Rent vs. Buy Decision (2026 Guide)
Evaluating the true trade-offs between real estate equity and market opportunity costs
The decision to buy a home or rent is the single largest financial choice most people make in their lifetimes. Popular culture often labels renting as “throwing money away,” but rigorous financial mathematics shows that renting and investing your down payment in index funds frequently builds equal or superior net worth over short-to-medium timeframes.
Homeownership carries unrecoverable costs: ~1% property taxes + 1% maintenance + 3% cost of capital. If equivalent annual rent is under 5% of home value, renting wins.
Tying up a 20% down payment in illiquid brick-and-mortar forfeits compounding in equity index funds (S&P 500 / Nifty 50 historical 9%–12% CAGR).
Upfront closing costs (2%–5%) and selling commissions (5%–6%) require at least 5 to 7 years of residency for home equity appreciation to overcome friction fees.
Frequently Asked Questions About Renting vs. Buying
How does the Rent vs. Buy decision engine calculate the opportunity cost of renting?
When you rent instead of buying, you don't need to lock up a large lump sum for a down payment (e.g. $80,000 or ₹15 Lakhs), nor do you pay for home maintenance, property taxes, or mortgage interest. The decision engine assumes this initial down payment capital AND any monthly cash savings are immediately invested into a diversified stock index fund (such as the S&P 500 or Nifty 50) compounding at historical market returns.
What is the famous '5% Rule' in the Rent vs. Buy debate?
The 5% Rule, popularized by portfolio managers, estimates the annual unrecoverable (sunk) cost of homeownership: 1% for property taxes, 1% for maintenance and repairs, and ~3% for the cost of capital (mortgage interest + equity opportunity cost). If your annual rent is less than 5% of the purchase price of an equivalent home, renting and investing the difference is mathematically superior.
What is the typical break-even year when buying a house becomes cheaper than renting?
In most moderate real estate markets, the break-even point occurs between Year 4 and Year 7. Buying rarely makes sense for horizons under 3 years because upfront closing costs (2%–5%) and future selling fees (6% agent commissions) consume early equity.
Is rent really 'throwing money away'?
No. Rent pays for shelter, flexibility, zero repair liability, and the freedom to invest your down payment capital into high-growth financial assets. Homeowners also pay substantial 'unrecoverable' money every month in mortgage interest, property taxes, HOA dues, and structural repairs that build zero equity.
When is buying a home clearly the better choice?
Buying is typically superior when you plan to stay in the property for 7+ years, live in a city with rapidly rising rents, value total housing stability, and benefit from a fixed-rate mortgage acting as an inflation hedge while amortizing principal debt.
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