Rent vs Buy Calculator

When Renting Makes Financial Sense

The decision to rent or buy is not simply a matter of "throwing money away" on rent. In many situations, renting is the financially superior choice. The CFPB's homebuyer toolkit emphasizes that buying a home only makes sense when the math works in your favor—and for many Americans in 2026, it does not. When home prices are high relative to rents, when mortgage rates remain elevated, or when your time horizon is short, renting preserves capital and flexibility that buying cannot match.[1]

A widely cited guideline is the 5% rule: the annual unrecoverable cost of homeownership is approximately 5% of the home's value. This breaks down to roughly 1% for property taxes, 1% for maintenance, and 3% for the cost of capital (mortgage interest plus the opportunity cost of your down payment equity). If the annual rent for a comparable property is less than 5% of the purchase price, renting is likely cheaper. For example, on a $400,000 home, the 5% threshold is $20,000 per year, or about $1,667 per month. If you can rent a similar home for $1,500/month, renting comes out ahead financially. According to the National Association of Realtors, the median existing-home price reached $398,000 in February 2026, making the 5% rule a critical checkpoint in many metro areas.[2, 1]

Career mobility is another factor often underweighted in the rent-vs-buy equation. Selling a home within 2-3 years of purchase typically results in a net loss after accounting for closing costs (3-6% of the sale price on the seller's side alone), moving expenses, and the front-loaded interest structure of amortizing mortgages. If your career trajectory involves potential relocations—or you are uncertain about staying in your current city—the liquidity of renting provides optionality that has real financial value. The Census Bureau's Housing Vacancies and Homeownership survey shows that homeownership rates vary dramatically by age group, reflecting the reality that younger workers with higher mobility rationally choose to rent.[3]

The 2026 Mortgage Rate Landscape

The Freddie Mac Primary Mortgage Market Survey pegged the 30-year fixed rate at 6.22% as of March 19, 2026 — well off the late-2023 peak near 8%, yet still more than double the 2.65% floor touched in early 2021. At today's level, a borrower financing $400,000 faces a principal-and-interest payment roughly $580 per month higher than it would have been at pandemic-era lows, adding over $200,000 in total interest over the life of the loan. Buyers can check prevailing rates for their credit profile and location through the CFPB's Explore Interest Rates tool, which draws on real lender data.[10, 23]

A concrete comparison illustrates the stakes. On a $400,000 mortgage at 3% over 30 years, the monthly principal-and-interest payment comes to roughly $1,686, with about $207,000 paid in total interest. Bump the rate to 5% and the payment climbs to approximately $2,147 per month, generating around $373,000 in interest. At 7%, the payment reaches roughly $2,661, and total interest balloons to about $558,000. The spread between 3% and 7% amounts to nearly $975 per month — or about $351,000 in additional interest over the loan's full term. These figures underscore why the NAR Housing Affordability Index has remained under historical norms even as home-price growth has moderated.[20]

Borrowers weighing whether to lock in at today's fixed rate or gamble on an adjustable-rate mortgage face a familiar trade-off. In a declining-rate environment, a 5/1 or 7/1 ARM can shave a quarter to half a percentage point off the initial rate, producing meaningful savings during the fixed-rate introductory period. But the CFPB warns that consumers must understand adjustment caps, index margins, and worst-case payment scenarios before signing on. If rates plateau or tick back up, an ARM borrower can face payment shock once the introductory window expires. For most buyers in 2026, the 30-year fixed remains the standard product: it locks in predictable payments for the life of the loan and eliminates the risk of future rate resets — a valuable feature when long-term rate direction is anything but certain.[21]

The True Cost of Homeownership

The mortgage payment is only the beginning. First-time buyers routinely underestimate the total cost of homeownership by 30-40%, according to research from the National Association of Realtors. Beyond the monthly principal and interest, homeowners must budget for property taxes (averaging 1.1% of assessed value nationally, though varying from 0.3% in Hawaii to over 2% in New Jersey), homeowner's insurance ($2,500-$3,500+ annually depending on location and coverage), and maintenance — the industry rule of thumb is 1-2% of the home's value per year for upkeep and repairs. On a $400,000 home, that maintenance alone could run $4,000-$8,000 annually.[2]

Closing costs add another significant expense that is easy to overlook. The CFPB reports that buyers typically pay 2-5% of the loan amount in closing costs at purchase, and sellers pay 5-6% of the sale price in agent commissions and transfer taxes when they eventually sell. On a $400,000 transaction, the combined buy-and-sell closing costs can exceed $30,000. These are sunk costs that directly reduce your net return from homeownership, and they are the primary reason why short holding periods almost always favor renting.[4]

The opportunity cost of the down payment is perhaps the most underappreciated factor. A 20% down payment on a $400,000 home is $80,000 in capital that is locked into an illiquid asset. That same $80,000 invested in a diversified stock portfolio at the S&P 500's historical average return of approximately 10% nominal would grow to roughly $207,000 over 10 years. Meanwhile, home equity grows only by the rate of home price appreciation (historically around 3-4% nominal nationally) minus the ongoing costs of ownership. This calculator applies the rent vs buy financial framework using Decimal.js with 28-digit precision to model both paths month by month, so you can see exactly when—and whether—buying pulls ahead.[5, 6]

Private Mortgage Insurance and Down Payment Strategies

Private mortgage insurance (PMI) is a lender-required policy on conventional loans when the borrower's down payment falls below 20% of the purchase price. Annual premiums typically range from 0.5% to 1.5% of the original loan amount, depending on credit score and loan-to-value ratio, and the coverage can be canceled once the borrower reaches 80% LTV through payments or appreciation. Under the One Big Beautiful Bill Act signed into law in 2026, PMI premiums are once again tax-deductible as qualified residence interest — a benefit that had previously lapsed. However, the deduction phases out for taxpayers with adjusted gross income above $100,000 ($50,000 for married filing separately) and disappears entirely at $110,000 ($55,000 MFS), so higher earners should not factor it into their rent-vs-buy analysis.[22, 13]

Several government-backed loan programs reduce or eliminate the down payment barrier altogether. FHA loans, insured by the Federal Housing Administration, require as little as 3.5% down for borrowers with credit scores of 580 or above, though they carry a mortgage insurance premium (MIP) that — unlike conventional PMI — remains for the life of the loan on most terms. VA home loans offer perhaps the strongest terms available: zero down payment and no PMI requirement for eligible veterans, active-duty service members, and certain surviving spouses. USDA loans serve a similar function for buyers in designated rural and suburban areas. A full overview of federal homebuyer assistance is available through USAGov's guide to home buying programs.[24, 25]

The size of a down payment reshapes the rent-vs-buy equation in ways that are not always intuitive. A smaller down payment means less capital locked up in a single illiquid asset, preserving funds that could earn returns in a diversified portfolio — a real consideration when equity markets have averaged 8–10% annually over long horizons. On the other hand, a smaller down payment produces a larger mortgage balance and, if it falls below the 20% threshold, the added cost of PMI. Together, these push monthly housing costs higher and can extend the breakeven timeline against renting. The trade-off varies substantially by market, expected holding period, and the buyer's investment alternatives. In the calculator above, users can experiment with different down payment percentages to find the balance that best fits their financial situation.[22]

Opportunity Cost and Investment Returns

The rent-vs-buy decision is fundamentally a comparison of two investment strategies: putting your capital into real estate or into financial markets. The Federal Reserve's FRED database shows that the S&P 500 has delivered approximately 10% annualized nominal returns over the past century, or roughly 7% after adjusting for inflation. By contrast, the Case-Shiller National Home Price Index shows long-run real home price appreciation of approximately 1-2% nationally — substantially lower than equities. While individual markets vary (coastal cities have often outpaced the national average), the broad data is clear: stocks have historically been the superior wealth-building asset.[7, 8]

The mathematical framework behind this calculator models two parallel paths. In the buying scenario, your net worth grows through mortgage principal paydown and home price appreciation, minus ongoing costs (interest, maintenance, taxes, insurance). In the renting scenario, your net worth grows through investment returns on the down payment you did not spend, plus the monthly savings difference (the gap between the renter's total housing cost and the buyer's total housing cost) invested at your assumed rate of return. Each month, the calculator computes both net worth figures using Decimal.js 28-digit precision, preventing the floating-point rounding errors that can compound to meaningful distortions over 30+ year projections.[6]

It is critical to account for the monthly savings difference between renting and buying. If your mortgage payment (plus taxes, insurance, and maintenance) is $2,800/month but renting a comparable property costs $1,800/month, the renter has $1,000/month extra to invest. At 7% real returns, that $1,000/month compounds to approximately $173,000 after 10 years and $527,000 after 20 years. This "savings gap" investment is often the decisive factor in the analysis—and it is the component most people forget when they say "at least with a mortgage, you're building equity." The Federal Reserve's Survey of Consumer Finances consistently shows that households who actively invest their housing savings build competitive wealth over time.[9]

Tax Implications of the Rent vs Buy Decision

The mortgage interest deduction is frequently cited as a major perk of homeownership, but the reality is more nuanced than the talking points suggest. The One Big Beautiful Bill Act made the $750,000 mortgage debt cap permanent for loans originated after December 15, 2017, while pre-December 2017 mortgages remain grandfathered at the $1 million threshold. However, with the standard deduction set at $16,100 for single filers and $32,200 for married filing jointly in 2026, the vast majority of homeowners no longer itemize — which means they receive zero tax benefit from mortgage interest. Research from the Tax Foundation confirms that roughly 60% of the deduction's benefit flows to taxpayers earning more than $200,000, making it a regressive subsidy that disproportionately rewards higher-income households rather than the middle-class buyers it was ostensibly designed to help.[11, 14, 13]

The state and local tax (SALT) deduction adds another layer of complexity. The OBBBA raised the SALT cap from $10,000 to $40,000 for tax years 2025 through 2029, though the higher cap phases out for taxpayers with modified adjusted gross income above $500,000 and drops back to $10,000 at $600,000 or more. This change is particularly meaningful in high-tax states like New Jersey, New York, California, and Connecticut, where combined property taxes and state income taxes routinely exceed $10,000 — and often $20,000 or more for homeowners with moderately valued properties. A separate but related development for 2026: private mortgage insurance (PMI) premiums are once again deductible as qualified residence interest, though the deduction phases out for taxpayers with adjusted gross income between $100,000 and $110,000. For buyers putting less than 20% down, the PMI deduction can offset several hundred dollars in annual tax liability during the early years of the loan.[15, 13]

Perhaps the most valuable tax benefit of homeownership is the capital gains exclusion on the sale of a primary residence. Under IRS Topic 701, single filers can exclude up to $250,000 in capital gains, while married couples filing jointly can exclude up to $500,000 — provided they have owned and used the home as their primary residence for at least two of the five years preceding the sale. This is a powerful but often-overlooked advantage that dramatically improves the after-tax return on homeownership. Consider a practical example: a homeowner purchases a property for $400,000 and sells it fifteen years later for $600,000. The entire $200,000 gain is tax-free, whereas the same gain in a taxable brokerage account would generate a federal long-term capital gains liability of $30,000 or more depending on income. Over long holding periods, this exclusion can represent tens of thousands of dollars in tax savings that tilt the buy-side math meaningfully in the homeowner's favor.[16]

Homeownership, the Wealth Gap, and Inflation Hedging

The Federal Reserve's 2022 Survey of Consumer Finances reports that the median net worth of homeowners stands at $396,200 compared to just $10,400 for renters — a striking 38:1 ratio. But correlation is not causation, and this gap deserves careful interpretation. Homeowners tend to have higher incomes, are more likely to be in dual-earner households, and disproportionately hold assets in employer-sponsored retirement plans. Perhaps the most underappreciated mechanism behind the wealth gap is "forced savings": a mortgage payment is a non-negotiable monthly obligation, and a meaningful portion of each payment goes toward building equity. Most renters, by contrast, must rely on voluntary discipline to invest the difference between rent and what a mortgage payment would have been — a behavioral hurdle that many never clear. Over a 30-year period, the forced-savings component of a mortgage alone can accumulate six figures in home equity, independent of any price appreciation.[9]

A fixed-rate mortgage is a natural inflation hedge — one of the few financial instruments available to ordinary households that provides this protection. Your monthly principal and interest payment stays constant in nominal terms while rents, wages, and the general price level rise around you. Over 30 years of 3% annual inflation, a fixed mortgage payment becomes roughly 42% cheaper in real terms, meaning the burden of that payment shrinks substantially relative to your income over time. The Bureau of Labor Statistics' CPI data shows that shelter costs — including rent and owners' equivalent rent — make up nearly one-third of the Consumer Price Index basket, and rent inflation has consistently outpaced overall CPI in recent years. For renters, this means housing costs consume an ever-larger share of income; for homeowners with fixed-rate mortgages, it means their largest monthly expense becomes progressively more affordable.[17]

Regional market variations matter enormously, and any rent-vs-buy analysis that ignores local conditions is incomplete. The Federal Housing Finance Agency's House Price Index tracks appreciation across all 50 states and more than 400 metropolitan areas, providing a granular picture of where home values are growing fastest and where they have stagnated. Markets with low price-to-rent ratios — below 15 times annual rent — are common in Midwest and Sun Belt metros such as Indianapolis, Memphis, and San Antonio, and strongly favor buying over renting. Markets with high price-to-rent ratios above 25 times annual rent — typical of coastal cities like San Francisco, New York, and Seattle — tend to favor renting and investing the difference in diversified index funds. The National Association of Realtors' existing-home sales data shows current inventory at 3.8 months' supply as of February 2026, still below the 5–6 months considered a balanced market, which continues to exert upward pressure on prices in the most supply-constrained regions.[18, 19]

How to Find Your Break-Even Point

The break-even point is the moment when the buyer's net worth (home equity minus remaining costs) exceeds the renter's net worth (accumulated investments from the down payment and monthly savings). In moderate housing markets, this typically occurs between 5 and 7 years, but the range varies enormously depending on local conditions. In expensive coastal cities where price-to-rent ratios are elevated, the break-even may extend to 10-15 years or may never arrive at all. In affordable markets with low price-to-rent ratios, the break-even can occur in as few as 2-3 years. The Freddie Mac Primary Mortgage Market Survey tracks the mortgage rates that directly influence this calculation—every 1% increase in the mortgage rate extends the break-even by roughly 2-3 years for a typical scenario.[10]

Several key variables shift the break-even dramatically. Down payment size has a dual effect: a larger down payment reduces your mortgage and monthly cost, but increases the opportunity cost of capital not invested in markets. Mortgage rate is the single most powerful lever—at 4% the break-even for a median-priced home arrives quickly, while at 7% it may take over a decade. Home price appreciation can accelerate the break-even if your local market outpaces the national average, but banking on above-average appreciation is a speculative bet. Investment returns on the renter's portfolio also matter—a conservative 5% assumption versus a historical 10% assumption can swing the break-even by several years in either direction.[10, 5]

This calculator computes the break-even month precisely by running both the buying and renting scenarios simultaneously, month by month, using Decimal.js 28-digit precision throughout. At each month, the buying side calculates remaining mortgage balance (via standard amortization), accumulated home equity (home value at that month's appreciation minus remaining loan), and cumulative ownership costs paid. The renting side tracks the investment portfolio value (down payment plus monthly savings contributions, compounded at the user's assumed return rate). The break-even occurs when the buyer's net position first exceeds the renter's—a crossover that is easy to spot in the chart view where the two net worth lines intersect.[6]

Key Assumptions and Limitations

This calculator provides a first-approximation comparison designed to clarify the financial trade-offs. Several simplifications are made intentionally to keep the model transparent and the inputs manageable. Property taxes and homeowner's insurance are not modeled separately—they are implicitly part of the total monthly housing cost the user enters. Closing costs (both at purchase and eventual sale) are omitted; in practice, these sunk costs of 5-10% combined would shift the break-even further in favor of renting, meaning this calculator gives buying a slight advantage it would not have in a more detailed model.[4]

The mortgage interest deduction is not factored in. Since the 2017 Tax Cuts and Jobs Act doubled the standard deduction, the majority of homeowners no longer itemize, making the mortgage interest deduction irrelevant for them. For those who do itemize, the deduction effectively reduces the cost of mortgage interest by their marginal tax rate—but this benefit phases out for higher-income taxpayers and applies only to the interest portion, not the full payment. The model also assumes a fixed mortgage rate for the entire term, consistent with the most common mortgage product in the U.S. Adjustable-rate mortgages (ARMs) would introduce additional uncertainty not captured here.[11]

Other simplifications include: rent increases are modeled at a constant annual rate (the user can set this), rather than reflecting the lumpy, market-driven nature of actual rent adjustments; home maintenance costs are assumed constant as a percentage of home value rather than increasing with home age; and inflation on non-housing expenses is not modeled since both scenarios are affected symmetrically. Despite these simplifications, the calculator captures the primary drivers of the rent-vs-buy decision with high numerical precision. For major financial decisions, we recommend consulting a qualified housing counselor or financial advisor who can incorporate your full tax situation, local market conditions, and personal financial goals.[12]

Key Takeaways

The rent-vs-buy decision is not one-size-fits-all, and anyone who tells you otherwise is selling something. In a 6%+ mortgage rate environment, with median home prices near $398,000 and significant hidden costs of ownership — maintenance, insurance, property taxes, and opportunity cost on your down payment — the math often favors renting in expensive markets and over short time horizons of less than five years. Conversely, in affordable markets with low price-to-rent ratios and for buyers planning to hold seven years or longer, the combination of equity buildup, tax benefits, and inflation hedging can make homeownership the clear financial winner. Rather than relying on rules of thumb or anecdotal advice, run the numbers with your specific inputs: your down payment, local home prices, expected holding period, mortgage rate, and the investment returns you could realistically achieve by renting and investing the difference. For personalized guidance tailored to your financial situation, consider consulting a HUD-approved housing counselor, who can provide free or low-cost advice on homebuyer readiness, mortgage options, and local down payment assistance programs.[12, 10]

Frequently Asked Questions