Free Tools for
Landlords & Property Managers

Calculate rent increases, screen tenants, analyze your ROI, estimate deposit deductions, and more — all free, no signup required.

Start with the Rent Increase Calculator →
No account needed  ·  Works in any browser  ·  Plain-English results
All Free Tools
Built for landlords who want fast answers — not spreadsheet headaches.
📈
Rent Increase Calculator
Enter your current rent and increase type to see your new rent, annual gain, and how much notice you're required to give in your state.
Most Popular
👤
Tenant Income Screener
Enter the applicant's income and your monthly rent to instantly see if they pass the 3x income rule — and get a plain-English screening verdict.
Landlord Favorite
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Landlord ROI Calculator
See your full return on investment — cash flow, cap rate, cash-on-cash return, and equity — all in one place with a plain-English verdict.
Free
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Security Deposit Deduction Estimator
Itemize damages, separate them from normal wear and tear, and see exactly how much of the deposit you can keep — with a ready-to-send deduction summary.
Free
📅
Late Fee Calculator
Calculate the late fee owed based on your lease terms, grace period, and state rules — and see the total amount due from the tenant.
Free
🏚️
Vacancy Loss Calculator
Find out exactly what an empty unit is costing you per day, per week, and per month — so you know what it's worth to fill it fast.
Free
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Built for Landlords, By a Landlord
Every tool gives you the number and tells you what it means.
1

Enter Your Numbers

Current rent, tenant income, property details — whatever the situation requires. Simple inputs, no jargon.

2

Get Instant Results

Your rent increase, screening verdict, ROI, deposit deductions — calculated instantly in your browser.

3

Make Better Decisions

Every result includes a plain-English explanation and a clear verdict — so you always know what to do next.

Why RentalOwnerCalc.com?

Most landlord tools are buried inside expensive property management software or built for real estate agents — not independent landlords. These calculators are built specifically for people who own rental property and need fast, accurate answers: Is this tenant qualified? How much can I raise the rent? What's my actual return? How much of this deposit can I keep? Every answer comes in plain English, not accounting jargon.

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