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Rental Income Calculator – Calculate Monthly Cash Flow, Cap Rate, Cash-on-Cash Return & Rental Yield for Investment Properties

Rental Income Calculator
Enter your monthly rent, purchase price, and property expenses to instantly see net cash flow, cap rate, cash-on-cash return, and gross rental yield — free rental property income calculator for landlords and investors.
No data stored
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Mobile friendly
100% free
Landlord-trusted formula

Property Details

Total rent collected per month
Enter 1 for a single-family home
Used to calculate cash-on-cash return
Principal + interest only
Rule of thumb: 1% of price ÷ 12
Typical range: 5–10%
Leave blank if self-managed
HOA, utilities, accounting, etc.

Rental Income Breakdown

Fill in your property details on the left and click Calculate to see your rental income breakdown.

Monthly Net Cash Flow
+$0.00
per month
Income & Expense Breakdown
Gross Monthly Rent
Vacancy Loss
Effective Rental Income
Total Monthly Expenses
Net Operating Income (NOI)
Mortgage Payment
Annual NOI
Key Investment Metrics
Cap Rate
Cash-on-Cash Return
Gross Rental Yield
Break-Even Occupancy

Income vs Expenses

Monthly Cash Flow vs Gross Rent

How Rental Income Works

Rental income is the money you collect from tenants who rent your property. It's one of the most common ways people build long-term wealth through real estate. But your actual profit — called net cash flow — depends on how much you spend to own and operate the property.

Gross rental income is the full amount your tenants pay each month. Net operating income (NOI) is what's left after all operating expenses except the mortgage. Cash flow is what's left after you also pay the mortgage — your real pocket money each month.

Two properties with the same rent can have very different returns depending on purchase price, local taxes, and management costs. That's why investors use metrics like cap rate and cash-on-cash return to compare deals fairly.

Key Rental Income Formulas

These are the core calculations this tool uses:

  • Effective Income = Gross Rent × (1 − Vacancy Rate)
  • NOI = Effective Income − Operating Expenses (excl. mortgage)
  • Cash Flow = NOI − Mortgage Payment
  • Cap Rate = Annual NOI ÷ Purchase Price × 100
  • Cash-on-Cash = Annual Cash Flow ÷ Cash Invested × 100
  • Gross Yield = Annual Rent ÷ Purchase Price × 100

Example: $1,800/mo rent, $220,000 purchase. NOI = $900/mo. Cap Rate = ($10,800 ÷ $220,000) × 100 = 4.9%.

Cap Rate vs Gross Yield Benchmarks

Market Type Typical Cap Rate Typical Gross Yield Risk Level
Prime Urban (NYC, SF)2–4%3–5%Low
Major Metro Suburbs4–6%6–8%Low–Medium
Mid-Size Cities5–8%7–10%Medium
Secondary Markets7–10%9–13%Medium–High
Rural / Small Town8–14%10–16%High
Buy-to-Let (UK)3–6%5–8%Medium

Typical Monthly Expense Guide

Use these benchmarks if you don't have exact numbers yet. All figures are rough averages and vary by location and property type.

Expense Type Typical Range
Property Tax0.5–2% of value per year
Landlord Insurance0.5–1.5% of value per year
Maintenance & Repairs1% of value per year
Property Management8–12% of monthly rent
Vacancy Allowance5–10% of gross rent
HOA Fees (if any)$100–$500/month (varies)

Common Questions About Rental Income

Most investors aim for at least $100–$200 in net cash flow per unit per month as a minimum threshold. However, the quality of a deal depends on your total cash invested. A property that earns $300/month cash flow on a $20,000 down payment (18% cash-on-cash) is better than one earning $500/month on a $100,000 down payment (6% cash-on-cash). Focus on percentages, not just dollar amounts.
The 1% rule is a quick screening tool. It says that a rental property's monthly rent should be at least 1% of its total purchase price. For example, a property bought for $200,000 should rent for at least $2,000/month. If a deal meets the 1% rule, it's likely to generate positive cash flow in most markets. In expensive urban areas, hitting 1% is rare — investors there often accept 0.5–0.7% and rely more on appreciation.
Cap rate ignores financing — it measures the property's income potential based on its full value, as if you paid cash. It's useful for comparing properties regardless of how they're financed. Cash-on-cash return, on the other hand, only measures your actual cash profit on the cash you invested. If you borrowed most of the purchase price, your cash-on-cash return can be much higher (or lower) than the cap rate depending on your mortgage terms.
A property manager typically charges 8–12% of monthly rent plus fees for leasing and maintenance coordination. The benefit is that you save time and avoid dealing with tenant issues directly. Self-management costs nothing but requires time, availability, and knowledge of local landlord-tenant law. For most first-time landlords with one or two local properties, self-managing is common. If you have multiple properties, live far away, or value your time highly, professional management often pays for itself.
Yes, rental income is generally taxed as ordinary income in most countries. In the US, you report it on Schedule E and can deduct expenses like mortgage interest, property taxes, insurance, maintenance, depreciation, and management fees. Depreciation is a valuable non-cash deduction that can significantly reduce your taxable rental income. Always consult a tax professional for advice specific to your situation, as rental tax rules vary by country and filing status.
Break-even occupancy is the minimum percentage of time your property needs to be rented out in order to cover all expenses, including the mortgage. For example, if your total monthly costs are $1,400 and your monthly rent is $1,800, your break-even occupancy is about 78%. This means the property only needs to be occupied about 78% of the time to avoid losing money. The lower your break-even occupancy, the safer your investment is against vacancies.

Cap Rate by Monthly Rent vs Purchase Price

Annual NOI assumed to be 60% of gross rent (40% expense ratio). Cap Rate = Annual NOI ÷ Purchase Price.

Monthly Rent $100K $150K $200K $300K $400K $500K

Cap rates above 6% are generally considered good for residential properties. Highlighted cells show cap rates ≥ 6%.

Cash-on-Cash Return by Annual Cash Flow & Down Payment

Annual Cash Flow ÷ Cash Invested (down payment + closing costs). Shows your actual return on money you put in.

Annual Cash Flow $20K Down $40K Down $50K Down $75K Down $100K Down $150K Down

Most investors target a cash-on-cash return of at least 6–10%. Highlighted cells show returns ≥ 8%.

5-Year Annual Rental Income Projection

Estimated gross annual rental income with 3% annual rent increase starting from different monthly rent levels.

Starting Rent/Mo Year 1 Year 2 Year 3 Year 4 Year 5 5-Yr Total

Assumes 3% annual rent growth and 5% vacancy. Actual growth depends on local rental market conditions.

Expense Ratio Impact on Monthly Cash Flow

How different expense ratios affect monthly cash flow for a property with a fixed mortgage payment at various rent levels.

Monthly Rent 30% Expenses 40% Expenses 50% Expenses 60% Expenses 70% Expenses Mortgage Est.

Expense ratio = Total operating expenses ÷ Gross rent. Typical range is 35–55% for residential rentals. Mortgage estimate uses 30yr at ~7%.

Average Gross Rental Yields by Country

A reference guide to typical gross rental yields and investment conditions in major markets worldwide.

Country Avg Gross Yield Major Cities Yield Vacancy Rate Foreign Buyer? Market Trend
🇺🇸 USA5–8%3–5% (NY, SF)5–7%YesStrong demand
🇬🇧 UK4–7%3–5% (London)3–5%YesGrowing
🇦🇺 Australia3–6%2–4% (Sydney)2–4%RestrictedRising prices
🇨🇦 Canada4–7%3–5% (Toronto)2–4%RestrictedHigh demand
🇩🇪 Germany3–5%2–4% (Berlin)2–3%YesStable
🇯🇵 Japan5–8%4–6% (Tokyo)10–18%YesStable/flat
🇺🇦 UAE (Dubai)6–10%6–9%8–12%YesRapidly growing
🇲🇾 Malaysia4–7%3–5% (KL)15–25%YesOversupply risk
🇵🇹 Portugal4–7%4–6% (Lisbon)4–8%YesTourism demand
🇿🇦 South Africa7–11%6–9% (Cape Town)8–15%YesHigh yields, risk
🇮🇳 India2–4%1.5–3% (Mumbai)10–20%RestrictedAppreciation driven

Data is approximate and for reference only. Yields vary widely by city, neighborhood, and property type. Always research local conditions before investing.

Estimated After-Tax Monthly Rental Income

Monthly net cash flow after estimated tax at common brackets. Assumes cash flow is fully taxable as ordinary income (no deductions modeled).

Monthly Cash Flow After 15% Tax After 22% Tax After 25% Tax After 28% Tax After 32% Tax After 37% Tax

Actual tax depends on deductions like depreciation, mortgage interest, and local taxes. Consult a tax professional for accurate rental income tax planning.