Rent vs. Buy Calculator
Compare the true long-term costs of renting versus buying a home.
The Formula
Monthly Rent Cost = Rent + Renters Insurance
5yr Buy Equity = Principal Paid + Appreciation
Mortgage: $1,863 + $400 tax + $150 ins = $2,413/mo
After tax benefit ≈ $2,200/mo
Break-even ≈ 3–4 years
Renting vs. Buying: It's Complicated
The common wisdom that "renting is throwing money away" is misleading. Renting has real value: flexibility, no maintenance costs, no property tax, and the ability to invest the difference. Buying builds equity and provides stability, but comes with significant transaction costs.
The 5% Rule
A useful shortcut: if your annual rent is less than 5% of the home's purchase price, renting is likely cheaper. The 5% accounts for property taxes (~1%), maintenance (~1%), and the cost of capital (~3%). If the home costs $400,000, compare your rent to $20,000/year ($1,667/month).
Frequently Asked Questions
Is renting really throwing money away?
No — this is one of the most persistent myths in personal finance. When you rent, you pay for housing, flexibility, and freedom from maintenance. When you own, you also pay interest, property taxes, insurance, and maintenance — none of which build equity. The equity you build comes from principal paydown and appreciation, which vary widely. In many markets over many periods, renters who invested the difference between rent and total ownership costs ended up ahead financially.
How long do I need to stay for buying to make financial sense?
In most markets, you need to stay at least 5–7 years to recoup the transaction costs of buying and selling. In rapidly appreciating markets the break-even can be shorter. In slower markets or if you bought near peak prices, it can be much longer. If your timeline is genuinely uncertain — due to job, relationships, or life stage — renting preserves flexibility that has real financial value.
Should I buy if I can afford it even if renting is cheaper?
Yes, if non-financial factors favor it. Home ownership provides stability, the ability to customize your space, protection against rent increases, and community roots. These are legitimate benefits that a financial calculator cannot capture. Just go in with eyes open: understand the total cost of ownership, have a realistic maintenance budget, and stay long enough to justify the transaction costs.
What is opportunity cost in the rent vs. buy decision?
Opportunity cost is what you could have earned by investing your down payment and any monthly savings instead of putting them into a home. If you put $80,000 down and that same $80,000 would have grown at 8% in an index fund for 10 years, the opportunity cost is substantial. A true rent vs. buy comparison includes what your money would have done in the alternative scenario.
Does it make sense to buy in a very expensive market?
In high price-to-rent ratio markets — where home prices are very high relative to local rents — renting is often the financially smarter choice. The price-to-rent ratio is the home price divided by annual rent. Ratios above 20 generally favor renting; below 15 generally favor buying. Cities like San Francisco, New York, and Seattle have historically had ratios above 30, making renting financially rational for many residents.