Free tools for landlords

Quick calculators for the numbers small landlords actually run — no account, no email, no catch. Built by a landlord who was tired of doing this math on a napkin.

Prorated Rent Calculator

Exact partial rent for a mid-month move-in or move-out — actual-days, 30-day, or 365-day method.

Free · No signup

Late Rent Fee Calculator

Flat, percentage, or per-day late fees with a grace period and cap — plus a note on state limits.

Free · No signup

Security Deposit Interest

Interest owed on a tenant's deposit and the total to return at move-out, simple or compounded.

Free · No signup

Rent Increase Notice

The deadline to serve a rent-increase notice — or the earliest it can take effect — for your state's notice period.

Free · No signup

Rental Property ROI

Cap rate, cash-on-cash return, and monthly cash flow for a rental — the three numbers that tell you if a deal works.

Free · No signup

The tools are handy. The software does it for you.

PropertyHub prorates rent, applies late fees, tracks deposits, and collects by ACH — automatically. Free to start; $8/mo if you'd rather your tenants pay nothing.

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Working through the rules in your state? See the landlord–tenant law guides — written by a landlord and attorney, with citations.