Free Tools
Landlord Tools & Calculators
Free tools built for landlords. No sign-up required. Bookmark them, share them, use them whenever you need.
Prorated Rent Calculator
Calculate prorated rent for move-ins or move-outs that happen mid-month. Three calculation methods, instant results.
Use calculator →Late Fee Calculator by State
Calculate the maximum late fee you can charge based on your state's specific laws, grace periods, and fee caps. All 50 states + DC.
Use calculator →Rent Estimate Calculator
Get an estimate of what you should charge for rent based on your property's location, size, features, and condition.
Use calculator →Rental Property ROI Calculator
Calculate cash flow, cap rate, and cash-on-cash return. Includes mortgage, expenses, vacancy, and a visual expense breakdown.
Use calculator →Should I Raise Rent?
An interactive decision tool that weighs market data, tenant risk, cost pressure, and rent control laws to recommend the right move.
Use calculator →DIY vs PM vs Tenby Cost Calculator
Compare the true cost of self-managing, hiring a property manager, or using Tenby. Includes time cost, turnover, and 5-year projections.
Use calculator →Airbnb Fee Calculator
See what Airbnb service fees really cost you per year — and whether a 12-month lease on the same property would net you more.
Use calculator →STR Bonus Depreciation Calculator
Estimate the Year-1 tax deduction a short-term rental generates under the One Big Beautiful Bill's permanent 100% bonus depreciation — cost segregation, the ≤7-day loophole, and recapture.
Use calculator →STR Compliance Watch
Get a free short-term rental rule summary for your market — permits, night caps, occupancy taxes. Then let us watch for changes so a rule update never becomes a fine.
Use calculator →Landlord Law Watch
Get a free landlord-tenant rule summary for your state — late fee caps, grace periods, deposit deadlines. Then let us monitor the statutes and email you an alert when anything changes.
Use calculator →These tools are brought to you by Tenby, an AI-powered property management platform for independent landlords managing 1-50 rental units. All tools are free, no account required.
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