Free Tools

Landlord Calculators

Six free calculators to help you analyze deals, screen tenants, and manage your rental portfolio smarter.

Property ROI Calculator

Calculate cap rate, cash-on-cash return, and NOI for any investment property.

Property & Mortgage

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~2-5% of price

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yrs

Rental Income

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Parking, laundry, etc.

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Nat'l avg ~7%

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Monthly Expenses

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Results

Loan Amount$240,000
Monthly Mortgage Payment$1,517
Gross Potential Income$2,000/mo
Vacancy Loss($140)/mo
Effective Gross Income$1,860/mo
Total Monthly Expenses($600)/mo
Net Operating Income$1,260/mo
Annual NOI$15,120
Annual Cash Flow-$3,084
Cap Rate5.04%
Cash-on-Cash Return-4.47%
Gross Rent Multiplier12.50

Free Landlord Calculators for Smarter Property Investing

Whether you're evaluating your first rental property or managing a growing portfolio, our free landlord calculators help you make data-driven decisions. From analyzing a deal's return on investment to fairly calculating prorated rent for a mid-month move-in, every tool is built specifically for landlords and property managers.

Rental Property ROI Calculator

Calculate cap rate, cash-on-cash return, and gross rent multiplier for any investment property. Input purchase price, mortgage details, rental income, and expenses to instantly see your net operating income and annual cash flow.

Rental Cash Flow Calculator

Quickly evaluate a rental property's monthly and annual profitability. Enter your mortgage details, rent, and operating expenses to see whether a property will generate positive or negative cash flow before you buy.

Prorated Rent Calculator

Fairly calculate rent for tenants moving in or out mid-month. The prorated rent formula divides monthly rent by the days in the month, then multiplies by the days occupied — our calculator does this automatically for both move-in and move-out scenarios.

Rent-to-Income Ratio Calculator

Use the 3x rent rule (or your own threshold) to screen tenants consistently. Most landlords require gross monthly income to be at least 3× the monthly rent — this calculator tells you instantly whether an applicant qualifies.

Mortgage Refinance Calculator

Determine if refinancing your rental property makes financial sense. See your new monthly payment, monthly savings, break-even point, and total lifetime interest savings when comparing your current mortgage to a new loan.

Late Fee Calculator

Calculate late rent fees based on a flat amount, percentage of rent, or daily accrual — accounting for your grace period. Note that late fee limits vary by state; always verify your local laws before assessing charges.

Frequently Asked Questions

What is a good cap rate for a rental property?

Most investors target a cap rate between 5% and 10%. A higher cap rate indicates better potential returns but may also signal higher risk. Cap rate = Annual NOI ÷ Property Value.

What is the 1% rule in real estate?

The 1% rule states that a rental property's monthly rent should be at least 1% of the purchase price. For example, a $200,000 property should rent for at least $2,000/month. It's a quick screening tool, not a guarantee of profitability.

How do you calculate prorated rent?

Prorated rent = (Monthly Rent ÷ Days in Month) × Days Occupied. For example, if rent is $1,500 and a tenant moves in on the 16th of a 30-day month, they owe $1,500 ÷ 30 × 15 = $750.

What rent-to-income ratio should landlords require?

Most landlords use a 3x rent rule — requiring tenants to earn at least 3× the monthly rent in gross income. This equates to rent being no more than 33% of gross income. Some landlords use the stricter 30% threshold.

When does refinancing a rental property make sense?

Refinancing makes sense when you can lower your interest rate enough to recoup closing costs within a reasonable break-even period (typically under 24 months), or when you need to cash out equity for additional investments.

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