Real Estate Investment Calculator

Q: What is cash-on-cash return in real estate investing?

Cash-on-cash return (CoC ROI) measures the annual pre-tax cash flow you receive as a percentage of the total cash you invested — typically the down payment plus closing costs. For example, if you invested $75,000 and the property generates $3,600 per year in net cash flow, your CoC return is 4.8%. It is one of the most practical metrics for comparing rental investments because it reflects your actual out-of-pocket return, unlike cap rate which ignores financing. Many experienced investors target a minimum CoC ROI of 6–8% for residential rentals.

Q: What is a good cash flow for a rental property?

A commonly cited benchmark is the 1% rule: monthly rent should equal at least 1% of the purchase price (e.g., $2,500/mo on a $250,000 property). In practice, “good” cash flow depends on your market, financing, and goals. Many investors in high-appreciation coastal markets accept break-even or slightly negative cash flow in exchange for long-term appreciation. Others require $200–$400 per month positive cash flow per door as a minimum. Use this calculator to find the rent that meets your target return at your specific purchase price and financing terms.

Q: What operating expenses should I include for a rental property?

The main operating expense categories are: property taxes (enter your annual amount ÷ 12), homeowners insurance (use a landlord/DP3 policy, typically higher than owner-occupied), HOA dues if applicable, property management fees (8–12% of gross rent if you use a manager), maintenance and repairs (budget 1% of value per year, roughly $100–$200/mo on a typical property), and vacancy allowance (5–10% of rent is standard). This calculator combines HOA, management, maintenance, and vacancy into a single HOA / Ops / Vacancy monthly field so you can enter your blended estimate easily.

Q: What is the difference between NOI and cash flow?

Net Operating Income (NOI) is your gross rental income minus all operating expenses — taxes, insurance, HOA, management, maintenance, and vacancy — but before any mortgage payments. Cash flow is what remains after also subtracting your monthly mortgage principal and interest (P&I). A property can have a positive NOI (profitable operations) but negative cash flow (debt service exceeds operating income). Both numbers matter: NOI drives cap rate and property valuation via the income approach; cash flow determines your actual month-to-month pocket income or cost.

Q: Should I use an LLC to buy a rental property?

An LLC can offer liability protection by separating your personal assets from the rental property, and may provide certain tax flexibility. However, most conventional lenders will not finance a property in an LLC — you’d typically need a commercial or portfolio loan at a higher rate, which would meaningfully hurt your cash flow and ROI. Many investors buy in their personal name and use an umbrella liability insurance policy for protection instead. The right answer depends on your state’s LLC laws, your lender options, your risk tolerance, and your tax situation. Consult a real estate attorney and CPA before making this decision.

HomeExpertly

www.homeexpertly.com

Rental Property Investment Calculator

Analyze any rental property deal. Calculate monthly cash flow, cap rate, cash-on-cash return, and NOI to decide if the numbers work before you buy.

For estimation purposes only. Actual returns depend on occupancy, maintenance, and market conditions. Consult a licensed real estate professional before investing.

1 Purchase Details

Purchase Price

Down Payment

20%

Closing Costs

2 Loan & Financing

Interest Rate

Loan Term

Adjust rate

2%8.5%15%

3 Income & Operating Expenses

Expected Monthly Rent

Property Tax (yearly)

Insurance (yearly)

HOA / Repairs / Vacancy (monthly)

Combine HOA fees, maintenance reserves, and vacancy allowance

Estimated Monthly Cash Flow

—

Enter details above and click Analyze Deal

Investment Returns

Cap Rate —

Cash-on-Cash ROI —

Gross Rent Yield —

NOI (Annual) —

Total Invested —

Annual Cash Flow —

Rent Allocation

Monthly Detail

Gross Rental Income —

Mortgage P&I —

Property Tax /mo —

Insurance /mo —

HOA / Ops /mo —

Loan Amount —

Visual Analysis

Rent Allocation

Annual Summary

Step-by-step guide

How to Analyze a Rental Property in 4 Steps

A full investment analysis takes less than two minutes. Gather your purchase details, loan terms, and rent estimate — then let the calculator show you whether the numbers pencil out before you spend a dollar on due diligence.

Enter Purchase Details

Input the purchase price, your planned down payment (watch the live percentage badge update as you type), and estimated closing costs. These three figures determine your total cash invested — the denominator for your cash-on-cash return calculation.

Set Your Loan Terms

Use the interest rate slider or type your rate directly — even a 0.25% difference matters significantly over 30 years. Select your loan term from the dropdown (10 to 30 years). The calculator immediately updates your monthly P&I payment and all downstream metrics.

Enter Income & Operating Expenses

Enter your projected monthly rent, annual property taxes and insurance, and a combined monthly figure for HOA dues, property management, maintenance, and vacancy allowance. Be conservative — underestimating expenses is the most common investor mistake.

Review All 6 Return Metrics & Download

Instantly see monthly cash flow (positive or negative), cap rate, cash-on-cash ROI, gross rent yield, NOI, and total invested. Adjust any input to stress-test the deal. Click Download Investment Report to save a professional PDF you can share with a lender, partner, or advisor.

Every metric explained

What the Investment Calculator Analyzes

Six key return metrics, a full monthly expense breakdown, and two visual charts — everything a serious investor needs to evaluate whether a rental property is worth buying.

Monthly Cash Flow

Gross rental income minus all monthly expenses: mortgage P&I, property taxes, insurance, HOA, management, and vacancy. The hero metric — positive cash flow means the property pays you every month; negative means it costs you.

Cap Rate

Net Operating Income divided by purchase price, expressed as a percentage. Cap rate measures the property’s return independent of financing — making it the best tool for comparing properties across different markets and financing scenarios.

Cash-on-Cash ROI

Annual cash flow divided by total cash invested (down payment + closing costs). CoC ROI measures your actual return on the dollars you deployed — the most practical metric for leveraged real estate investments where financing matters.

Gross Rent Yield

Annual gross rent divided by purchase price — a quick, pre-expense screen for whether a deal is worth analyzing further. The popular 1% rule is equivalent to a 12% gross yield. High yield areas often signal higher risk or lower appreciation potential.

Net Operating Income (NOI)

Annual gross rent minus all operating expenses — taxes, insurance, HOA, management, maintenance, and vacancy — before debt service. NOI is used by appraisers and lenders to value commercial and multi-family properties using the income approach.

Mortgage P&I & Amortization

Your fixed monthly principal and interest payment, calculated using standard amortization. Model different rate and term combinations — 15-year vs. 30-year loans have dramatically different P&I payments, cash flow profiles, and long-term equity build-up.

The rental market by the numbers

U.S. Rental Real Estate — Key Statistics

Who this is for

The Investment Calculator Is Built For You If…

Whether you’re buying your first rental or stress-testing a growing portfolio, running these numbers before you make an offer is the single most important habit successful investors share.

First-Time Investors

Learn to analyze deals

You’ve heard real estate builds wealth but you’ve never bought an investment property. This calculator teaches you the core metrics — cash flow, cap rate, CoC ROI — in the context of a real deal, so you understand why the numbers matter before you commit your capital.

Start by modeling the 1% rule — monthly rent ≥ 1% of purchase price
Include a 5–10% vacancy allowance even if the area has low vacancy rates
Budget at least 1% of property value per year for maintenance
Download the PDF report to review with your lender or mentor

Active Landlords

Portfolio performance tracking

You already own rental properties and you’re evaluating whether to buy more, refinance existing ones, or sell and redeploy capital. Run each potential acquisition through the calculator to compare deals head-to-head and ensure you’re deploying equity where it produces the best risk-adjusted return.

Model a cash-out refinance by entering the new loan terms
Compare short-term rental income vs. long-term rent assumptions
Use the cap rate to benchmark against your current portfolio average
Stress-test with rent reduced 10–15% to find your break-even rent

BRRRR & 1031 Investors

Advanced strategy analysis

You’re executing a Buy-Rehab-Rent-Refinance-Repeat or 1031 exchange strategy and need to model the stabilized return after refinancing or redeployment. Use the calculator to find the minimum rent needed to hit your target CoC ROI at the new loan balance and rate after a cash-out refi.

Enter the post-rehab ARV as the purchase price for BRRRR analysis
Model the refinance loan amount in Section 2 to see stabilized cash flow
Compare 1031 replacement properties by running each through the calculator
Target CoC ROI above your cost of capital to confirm the strategy works

Expert guidance

7 Tips for Accurate Rental Property Analysis

The quality of your investment analysis is only as good as the inputs. Here are the most common errors investors make — and how to avoid them when running your numbers.

Always Include a Vacancy Allowance

Even in hot rental markets, properties experience turnover, tenant screening periods, and occasional vacancies. Budget at least 5% of gross rent (about 18 days per year) as a vacancy allowance. In softer markets or with higher-turnover tenant profiles, use 8–10%. Include this in your HOA / Ops / Vacancy field.

Use Current Rate Quotes, Not Averages

Investment property mortgage rates run 0.5–0.75% higher than primary residence rates. Get a real loan quote for a rental property before you model your returns — using a rate that’s even 0.5% too low can make a marginal deal look profitable when it isn’t. Lock in your rate with a lender before making an offer.

Verify Rents with Active Comparables

The seller, listing agent, or even Zillow’s rent estimate may not reflect what tenants are actually signing leases for today. Check active rental listings on Zillow, Apartments.com, and Facebook Marketplace for the exact ZIP code, bedrooms, and condition. Use the lower end of the range for a conservative analysis.

Budget 1% of Value Per Year for Repairs

The 1% rule for maintenance means a $300,000 property should budget approximately $3,000 per year ($250/mo) for maintenance and repairs. Older homes or those with aging systems (roof, HVAC, plumbing) may require more. Include this in your monthly HOA / Ops / Vacancy field alongside management fees and vacancy.

Compare 15-Year vs. 30-Year Financing

A 15-year mortgage builds equity much faster and often carries a lower rate, but the higher monthly P&I payment can kill cash flow in the short term. Use the loan term dropdown to compare both scenarios side-by-side and decide whether the equity acceleration justifies the tighter monthly margin.

Model the Deal at Different Down Payments

More leverage (lower down payment) typically improves cash-on-cash ROI but increases risk and reduces monthly cash flow. Use the down payment field and the live percentage badge to model 15%, 20%, and 25% down and find the leverage level that achieves your target return at an acceptable risk level.

Don’t Ignore the Debt Service Coverage Ratio

Lenders evaluate rental properties using the Debt Service Coverage Ratio (DSCR): NOI divided by annual mortgage payments. Most lenders require a DSCR of at least 1.20–1.25 — meaning the property’s NOI must be at least 20–25% more than the annual debt service. If your NOI barely exceeds the mortgage, your lender may not approve the loan.

Common questions

Real Estate Investment Calculator — Frequently Asked Questions

Everything you need to know about interpreting the output metrics, what inputs to use, and how to compare investment properties using this calculator.

What is cash-on-cash return in real estate investing?

Cash-on-cash return (CoC ROI) measures the annual pre-tax cash flow you receive as a percentage of the total cash you invested — typically the down payment plus closing costs. For example, if you invested $75,000 and the property generates $3,600 per year in net cash flow, your CoC return is 4.8%. It is one of the most practical metrics for comparing rental investments because it reflects your actual out-of-pocket return, unlike cap rate which ignores financing. Many experienced investors target a minimum CoC ROI of 6–8% for residential rentals.

What is cap rate and how is it calculated?

Cap rate (capitalization rate) is the ratio of a property’s Net Operating Income (NOI) to its purchase price, expressed as a percentage. NOI equals gross rental income minus all operating expenses — property taxes, insurance, HOA, management, and vacancy — but before mortgage payments. Formula: Cap Rate = NOI / Purchase Price × 100. A higher cap rate generally means higher return but also higher risk or a lower-quality market. Most residential rental investors target cap rates of 5–10% depending on the local market and asset type.

What is a good cash flow for a rental property?

A commonly cited benchmark is the 1% rule: monthly rent should equal at least 1% of the purchase price (e.g., $2,500/mo on a $250,000 property). In practice, “good” cash flow depends on your market, financing, and goals. Many investors in high-appreciation coastal markets accept break-even or slightly negative cash flow in exchange for long-term appreciation. Others require $200–$400 per month positive cash flow per door as a minimum. Use this calculator to find the rent that meets your target return at your specific purchase price and financing terms.

What operating expenses should I include for a rental property?

The main operating expense categories are: property taxes (enter your annual amount ÷ 12), homeowners insurance (use a landlord/DP3 policy, typically higher than owner-occupied), HOA dues if applicable, property management fees (8–12% of gross rent if you use a manager), maintenance and repairs (budget 1% of value per year, roughly $100–$200/mo on a typical property), and vacancy allowance (5–10% of rent is standard). This calculator combines HOA, management, maintenance, and vacancy into a single HOA / Ops / Vacancy monthly field so you can enter your blended estimate easily.

What is the difference between NOI and cash flow?

Net Operating Income (NOI) is your gross rental income minus all operating expenses — taxes, insurance, HOA, management, maintenance, and vacancy — but before any mortgage payments. Cash flow is what remains after also subtracting your monthly mortgage principal and interest (P&I). A property can have a positive NOI (profitable operations) but negative cash flow (debt service exceeds operating income). Both numbers matter: NOI drives cap rate and property valuation via the income approach; cash flow determines your actual month-to-month pocket income or cost.

How does the down payment affect cash flow and ROI?

A larger down payment reduces your loan amount and monthly mortgage payment, which directly improves monthly cash flow. However, it also increases the cash you have invested, which can lower your cash-on-cash ROI if the improvement in cash flow is proportionally smaller than the extra capital deployed. For example, putting 30% down vs. 20% might add $200/mo in cash flow but require $50,000 more upfront — a poor trade if that capital could earn more elsewhere. Use the down payment field and the live percentage badge in this calculator to model different leverage scenarios and find your optimal balance.

Should I use an LLC to buy a rental property?

An LLC can offer liability protection by separating your personal assets from the rental property, and may provide certain tax flexibility. However, most conventional lenders will not finance a property in an LLC — you’d typically need a commercial or portfolio loan at a higher rate, which would meaningfully hurt your cash flow and ROI. Many investors buy in their personal name and use an umbrella liability insurance policy for protection instead. The right answer depends on your state’s LLC laws, your lender options, your risk tolerance, and your tax situation. Consult a real estate attorney and CPA before making this decision.

Important disclaimer: All figures produced by the HomeExpertly Real Estate Investment Calculator are for educational and estimation purposes only and do not constitute financial, investment, legal, or tax advice. Results are based entirely on the inputs you provide and standard mathematical formulas — actual investment performance will vary based on actual rents received, occupancy rates, local tax assessments, insurance premiums, maintenance costs, management fees, financing terms, and market conditions. This tool does not account for property appreciation or depreciation, income tax implications (including depreciation deductions or capital gains on sale), principal paydown equity build-up, inflation adjustments, or financing costs such as origination fees and points. Past performance of real estate markets is not indicative of future results. Always consult a licensed real estate professional, licensed mortgage lender, certified public accountant, and/or financial advisor before making any real estate investment decision. HomeExpertly is not a licensed lender, broker, real estate agent, investment advisor, or financial planner.