Free calculators for Landlords.

We’ve created a selection of free calculators for landlords to use. Determine your monthly mortgage payments, net worth, rental yield and more.

Illustration of two blue houses with a tree between them
Featured Calculator

Prorated Rent Calculator

Work out how much prorated rent to charge when a tenant moves in or out partway through the month, plus the deposit and up-front costs due at move-in.

70% Rule Calculator

Work out the most you should pay for a flip or BRRRR deal. Enter the after-repair value and your repair estimate to get a maximum offer in seconds.

BRRRR Investment Calculator

Analyse a Buy, Rehab, Rent, Refinance, Repeat deal end to end - see how much cash you pull back out, your monthly cash flow, and whether the numbers pass a lender's underwriting.

Cap Rate Calculator

Estimate a rental property's return with our free cap rate calculator. Work out the cap rate from NOI and price, or the value implied by a target cap rate.

Free Mileage Calculator

Log every business-related trip  inspections, contractor meetings, supply runs - calculate accurate driving distance automatically, and apply the IRS standard mileage rate (70¢/mile) to see your total deduction. Download a tax-ready PDF in three clicks.

Income Tax Calculator

Work out the federal income tax on your rental property using the 2026 IRS brackets - including depreciation, deductible expenses and the passive loss allowance.

Late Fees Calculator

Work out the late fee your tenant owes based on your lease - flat, percentage of rent, or daily - with grace period handling, plus ready-to-send tenant templates.

Mortgage Calculator

Work out your monthly mortgage payment on a home or rental property - principal, interest, taxes, insurance and PMI - and check whether the rent covers the debt.

Net Operating Income Calculator

Calculate the net operating income on an investment property - effective gross income less operating expenses, before financing and tax.

Prorated Rent Calculator

Work out how much prorated rent to charge when a tenant moves in or out partway through the month, plus the deposit and up-front costs due at move-in.

Rental Increase Estimator

Estimate the market rent for a US rental property using Zillow, HUD and Census data - then see how your asking rent compares to the typical rent in the same ZIP code.

Rental Yield Calculator

Work out the gross and net yield on a rental property, factor in vacancy and operating costs, and see what your investment really returns.

Vacancy Rate Calculator

Work out your true vacancy rate, what it's costing you in dollars, and how you compare to the local market - using free US Census and Zillow data.

Helpful articles

NOI conversation with prospective landlord
Investment Strategy

How to Increase NOI on an Inherited Rental Without Renovating

Raise NOI on an occupied rental without renovating. See where money leaks, two case studies, and when you can make changes.

Ryan Green

Updated

August 31, 2026

Ryan Green

Updated

August 31, 2026

Cover image for the Landlord Studio article “The Best Store Discounts and Pro Programs for Landlords.”
Property Maintenance

The Best Store Discounts and Pro Programs for Landlords (2026)

The best pro loyalty programs and store discounts for US landlords - save on repairs, materials, paint, and DIY supplies at Home Depot, Lowe's & more.

Ryan Green

Updated

August 6, 2026

Ryan Green

Updated

August 6, 2026

Cover image for the Landlord Studio article “9 Best Landlord Apps for 2026.”
Landlord Studio

9 Best Landlord Apps for 2026

The best landlord apps for 2026, from all-in-one management to receipt scanning, e-signatures, and mileage tracking. Build your landlord tech stack.

Ryan Green

Updated

July 29, 2026

Ryan Green

Updated

July 29, 2026