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Investment Analysis Calculators

Full buy-and-hold rental analysis and returns

For long-term rental investors performing comprehensive underwriting: income, expenses, financing, and multi-year wealth projection.

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Rental Property Calculator

Property DetailsOptional — auto-fills market data

Calculator Inputs

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What it does

The Rental Property Calculator is a full-stack underwriting tool that models income, operating expenses, debt service, financing impact, and long-term wealth accumulation for buy-and-hold rentals in a single view. Input property price, rent, expenses, and loan terms — the calculator generates cap rate, cash flow, cash-on-cash return, and 30-year equity projection.

This calculator removes guesswork by automating calculations across all major underwriting dimensions. Compare scenarios with different purchase prices, financing structures, or rent assumptions to isolate which variables most impact your returns and identify the minimum acceptable terms for a deal to work.

Who it's for

  • Buy-and-hold investors underwriting deals before making offers or conducting deeper due diligence
  • Real estate agents presenting investment analysis packages to investor clients
  • First-time landlords learning which metrics matter and how expenses affect profitability
  • Portfolio managers screening off-market deals and institutional acquisitions at scale

How it works

1

Enter property financials

Purchase price, down payment, loan terms, annual rent, all operating expenses.

2

Set appreciation and rent growth

Annual property appreciation rate and annual rent increase rate.

3

Project wealth over time

View cumulative cash flow, equity build, and ending net worth.

Why it matters

Model every income and expense line item in one place

Project cash flow, equity, and net worth impact over 10–30 years

Test different financing scenarios

Identify which properties build true wealth fastest

Membership

Unlock all 67 calculators + AI + reports

Full access to Rental Property Calculator, 66 other calculators, live FRED rates, AI deal verdicts, conservative/base/optimistic scenario projections, printable reports, and vault storage.

Investor Starter

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No credit card — ever

  • 1 calculator per day (Quick Reference)
  • 50 glossary definitions per day
  • 5 template previews
  • Market Insights (read-only)
  • Limited investor games (1 game)
  • +3 more features
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7-Day Free Trial

Core Investor

$49/month

7-day free trial included

  • 67 Professional Calculators — Unlimited
  • 1/2/5/10-Year Scenario Projections
  • Save & Print Reports to Vault
  • 210+ Templates & Contracts
  • 110+ Phone Scripts
  • +7 more features
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Pro Investor

$79/month

7-day free trial included

  • Everything in Core Investor
  • Full Investor CRM — Included
  • AI Deal Analyzer & Listing Analyzer
  • AI Underwriting & Property Analysis
  • AI Rehab Estimator & Rent Analyzer
  • +7 more features
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What every calculator includes

67 Calculators

Every investment strategy — rental, flip, BRRRR, mortgage, commercial, wealth building.

Scenario Projections

Conservative, base, and optimistic 1/2/5/10-year return modeling.

AI Deal Verdict

Claude-powered analysis — strengths, risks, and actionable recommendations.

Investor Vault

Save unlimited reports. Revisit, compare, and track every deal you've analyzed.

Print-Ready Reports

Professional PDF reports to share with agents, lenders, and partners.

Address Auto-Fill

Enter a property address to pre-fill value, rent, and tax data automatically.

Live FRED Rates

Mortgage rate fields pre-populate with Federal Reserve interest rate data.

Investment-Grade Math

Every formula audited against professional underwriting standards.

Secure checkout · Cancel anytime · 7-day free trial on Core & Pro

Frequently asked questions

Should I use conservative or optimistic assumptions?

Use realistic base case. Run sensitivity analysis with high and low versions. Conservative assumptions are safer for go/no-go decisions.

What time horizon should I model?

10–15 years shows tax benefits and equity paydown; 20–30 years shows full leverage power and cash flow accumulation.

Do I include capital improvements and replacement reserves?

Yes — budget 1–2% of rent annually for roof, HVAC, foundation work. This prevents cash flow surprises.

How often should I remodel the property financially?

Annually if tracking actual performance; quarterly if evaluating new deals. Always before making hold-or-sell decisions.

Is this calculator free to use?

Yes — create a free Investor Starter account to run 1 calculator per day. No credit card required. Upgrade to Core ($49/mo) for unlimited access to all 67 calculators.

How accurate are the results?

Results are only as accurate as your inputs. The formulas use industry-standard real estate investment math. Always verify with a licensed professional before committing capital.

Ready to analyze your next deal?

Join thousands of investors using REI Vault Pro. All 67 calculators, scenario projections, AI insights, vault storage, and printable reports — start free, no credit card required.

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