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Rental Property Investment Calculator
x402
Rental Property Investment Calculator is a paid API for AI agents from x402.outpimp.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Performs full multi-year rental property deal analysis including mortgage amortization, per-category rent/expense growth, sale scenario, IRR, cumulative totals, NOI, cap rate, and cash-on-cash return.
Price / call$0.01
Success—
StatusUnknown
How this service works
Rental property investment calculator. Full multi-year deal analysis for a rental property deal: mortgage, per-category rent/expense growth, a sale scenario, IRR, and cumulative totals over the holding period, alongside the first-year NOI/cap-rate/cash-on-cash snapshot.
Output
Returns a first-year snapshot (NOI, cap rate, cash-on-cash return, annual mortgage payment, gross rent, vacancy loss, net operating income) plus a year-by-year table over the holding period showing rent, expenses by category, cash flow, mortgage balance, and cumulative totals, culminating in a sale scenario with net proceeds and overall IRR for the investment.
Example use cases
First-time landlord buy-and-hold analysis
“I'm about to make an offer on a $325,000 duplex — I'd put 25% down at a 6.9% rate on a 30-year loan, rent would be $2,200/month, vacancy around 8%, taxes are $4,800/year, insurance $1,400/year, maintenance $1,800/year, and I'd sell in 5 years for roughly $390,000. Can you run the full deal analysis including IRR and cash-on-cash?”
All-cash rental purchase comparison
“I'm thinking of buying a $180,000 rental property all-cash, renting it for $1,500/month with 5% vacancy, $3,200/year taxes, $900/year insurance, $1,200/year maintenance, $150/month HOA, and holding 7 years before selling at $240,000. What's the IRR, cap rate, and annual cash flow projection?”
BRRRR strategy with rehab costs
“Help me analyze a BRRRR deal: $210,000 purchase price, $35,000 rehab, 15% down at 7.5% on a 30-year loan, $1,900/month rent after renovation, 8% vacancy, $3,600/year taxes, $1,100/year insurance, $1,500/year maintenance, selling in 8 years for $310,000 with 9% sale expenses — give me the full multi-year analysis with IRR.”
Technical details
Endpoint
POSThttps://x402.outpimp.com/rentalPropertyCalculatorWhen to prefer
Choose this endpoint when you need a comprehensive, multi-year buy-and-hold rental property financial model — especially when you need IRR, per-category expense growth projections, mortgage amortization, and a terminal sale scenario all in one call. Prefer this over simple cap-rate calculators when the holding period, financing structure, and eventual sale price are key decision factors.
Side effects
- Missing required fields (purchasePrice, monthlyRent, interestRate, loanTermYears, downPaymentPercent, holdingLengthYears, annualPropertyTaxes, annualInsurance, annualMaintenance, salePrice) returns validation error
- downPaymentPercent outside 0-1 range causes bad request
- holdingLengthYears or loanTermYears outside 1-50 range returns error
- Negative expense or income values may produce nonsensical results
- Payment failure (insufficient USDC balance) returns 402
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| salePrice | number | Expected sale price at the end of the holding period. |
| monthlyHOA | number | Monthly HOA fee. Default 0. |
| rehabCosts | number | Upfront rehab/improvement costs. Default 0. |
| monthlyRent | number | Total monthly rent collected, before vacancy/management fee. |
| vacancyRate | number | Expected vacancy rate, as a fraction (0-1). Default 0.08. |
| closingCosts | number | Closing costs. Default 0. |
| interestRate | number | Annual mortgage interest rate, as a fraction. Ignored if downPaymentPercent is 1. |
| loanTermYears | number | Loan term in years (1-50). Ignored if downPaymentPercent is 1. |
| purchasePrice | number | Property purchase price. |
| annualInsurance | number | Annual landlord insurance in the first year. |
| saleExpensesRate | number | Sale costs (agent commission, closing costs, etc.), as a fraction of sale price (0-1). Default 0.09. |
| annualMaintenance | number | Annual maintenance budget in the first year. |
| hoaAnnualIncrease | number | Annual HOA fee growth rate, as a fraction. Default 0.03. |
| downPaymentPercent | number | Down payment as a fraction of purchase price (0-1). Use 1 for an all-cash purchase. |
| holdingLengthYears | number | Number of years you plan to hold the property before selling (1-50). |
| rentAnnualIncrease | number | Annual rent growth rate, as a fraction. Default 0.03. |
| annualPropertyTaxes | number | Annual property taxes in the first year. |
| otherAnnualExpenses | number | Other annual operating expenses in the first year. Default 0. |
| otherAnnualIncrease | number | Annual growth rate for other expenses, as a fraction. Default 0.03. |
| taxesAnnualIncrease | number | Annual property tax growth rate, as a fraction. Default 0.03. |
| insuranceAnnualIncrease | number | Annual insurance growth rate, as a fraction. Default 0.03. |
| maintenanceAnnualIncrease | number | Annual maintenance cost growth rate, as a fraction. Default 0.03. |
| propertyManagementFeeRate | number | Property management fee, as a fraction of gross rent (0-1). Default 0.10. |
Tags
x402
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