{"uid":"cap_BOTnvw1dcconwahSxX5Tf","slug":"cap-rate-calculator-for-real-estate-investing-c703a4a8","name":"Cap Rate Calculator for Real Estate Investing","description":"Cap rate calculator for real estate investing. Runs a full multi-year deal analysis (per-category rent/expense growth, a sale scenario, IRR) and headlines the capitalization rate: first-year NOI divided by purchase price.","url":"https://x402.outpimp.com/capRateCalculator","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"salePrice":{"type":"number","description":"Expected sale price at the end of the holding period."},"monthlyHOA":{"type":"number","default":0,"description":"Monthly HOA fee. Default 0."},"rehabCosts":{"type":"number","default":0,"description":"Upfront rehab/improvement costs. Default 0."},"monthlyRent":{"type":"number","description":"Total monthly rent collected, before vacancy/management fee."},"vacancyRate":{"type":"number","default":0.08,"description":"Expected vacancy rate, as a fraction (0-1). Default 0.08."},"closingCosts":{"type":"number","default":0,"description":"Closing costs. Default 0."},"interestRate":{"type":"number","description":"Annual mortgage interest rate, as a fraction. Ignored if downPaymentPercent is 1."},"loanTermYears":{"type":"number","description":"Loan term in years (1-50). Ignored if downPaymentPercent is 1."},"purchasePrice":{"type":"number","description":"Property purchase price."},"annualInsurance":{"type":"number","description":"Annual landlord insurance in the first year."},"saleExpensesRate":{"type":"number","default":0.09,"description":"Sale costs (agent commission, closing costs, etc.), as a fraction of sale price (0-1). Default 0.09."},"annualMaintenance":{"type":"number","description":"Annual maintenance budget in the first year."},"hoaAnnualIncrease":{"type":"number","default":0.03,"description":"Annual HOA fee growth rate, as a fraction. Default 0.03."},"downPaymentPercent":{"type":"number","description":"Down payment as a fraction of purchase price (0-1). Use 1 for an all-cash purchase."},"holdingLengthYears":{"type":"number","description":"Number of years you plan to hold the property before selling (1-50)."},"rentAnnualIncrease":{"type":"number","default":0.03,"description":"Annual rent growth rate, as a fraction. Default 0.03."},"annualPropertyTaxes":{"type":"number","description":"Annual property taxes in the first year."},"otherAnnualExpenses":{"type":"number","default":0,"description":"Other annual operating expenses in the first year. Default 0."},"otherAnnualIncrease":{"type":"number","default":0.03,"description":"Annual growth rate for other expenses, as a fraction. Default 0.03."},"taxesAnnualIncrease":{"type":"number","default":0.03,"description":"Annual property tax growth rate, as a fraction. Default 0.03."},"insuranceAnnualIncrease":{"type":"number","default":0.03,"description":"Annual insurance growth rate, as a fraction. Default 0.03."},"maintenanceAnnualIncrease":{"type":"number","default":0.03,"description":"Annual maintenance cost growth rate, as a fraction. Default 0.03."},"propertyManagementFeeRate":{"type":"number","default":0.1,"description":"Property management fee, as a fraction of gross rent (0-1). Default 0.10."}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_J5diCtM2bht79-jwNJOz9","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Runs a full multi-year real estate deal analysis including per-category rent/expense growth, a sale scenario, and IRR, with the capitalization rate (first-year NOI ÷ purchase price) as the headline output.","exampleAgentPrompt":"Run a full cap rate and IRR analysis on a $350,000 rental property that brings in $2,400/month in rent, with a 20% down payment, 7.25% interest rate on a 30-year loan, $5,000/year in property taxes, $1,200/year insurance, $2,000/year maintenance, 8% vacancy, and I plan to sell after 7 years at $450,000.","exampleUseCases":[{"title":"Evaluating a new rental property purchase","prompt":"I'm looking at a $280,000 single-family rental that rents for $1,950/month. I'd put 25% down at 6.9% interest over 30 years, taxes are $3,800/year, insurance is $900/year, maintenance budget is $1,500/year, 8% vacancy, and I'd sell in 5 years for $340,000. Can you calculate the cap rate, NOI, and IRR for me?"},{"title":"All-cash deal return analysis","prompt":"I'm buying a condo for $220,000 all cash — rents for $1,600/month, taxes are $2,400/year, $700/year insurance, $1,200/year maintenance, $200/month HOA with 3% annual increases, 5% vacancy, and I'll sell in 10 years for $310,000. What's my cap rate and projected IRR?"},{"title":"Comparing rent growth assumptions on a hold","prompt":"Run the numbers on a $500,000 duplex I'm buying: $2,800/month combined rent, 20% down at 7.5% for 30 years, $7,500/year taxes, $1,800/year insurance, $3,000/year maintenance, 8% vacancy, rent growing at 4% per year, and I'll sell in 8 years at $680,000 with 9% sale costs. Show me cap rate and IRR."}],"resultDescription":"Returns the first-year capitalization rate (NOI ÷ purchase price), year-by-year cash flow projections accounting for per-category rent and expense growth, mortgage amortization, a sale-year scenario (net sale proceeds after agent commissions and closing costs), internal rate of return (IRR) over the full holding period, and cash-on-cash return metrics.","failureModes":["Missing required fields (purchasePrice, monthlyRent, downPaymentPercent, interestRate, loanTermYears, holdingLengthYears, annualPropertyTaxes, annualInsurance, annualMaintenance, salePrice) cause validation errors","holdingLengthYears or loanTermYears outside 1–50 range rejected","downPaymentPercent of 1 (all-cash) requires omitting or ignoring interestRate and loanTermYears — may error if not handled","vacancyRate or saleExpensesRate outside 0–1 fraction range causes unexpected results","Negative input values for costs or prices may produce nonsensical output"],"whenToPreferThis":"Choose this endpoint when you need a comprehensive multi-year rental property investment analysis that goes beyond a simple cap rate formula — specifically when you want IRR, year-by-year cash flow projections with individual growth rates, and a modeled sale scenario. Prefer this over generic financial calculators when the user is evaluating a buy-and-hold real estate deal with a mortgage or all-cash structure.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T18:42:01.694Z","isFirstParty":false}