Why these are free, and what the catch is
There isn’t one, and it is worth explaining why. Every one of these tools runs on an engine that already exists inside Rentmark — the per-state rules table behind the lease generator, the arithmetic behind the rent schedule. Opening them up costs us nothing we were not already paying for, and it means the person who lands here with a single question gets an answer instead of a signup form.
None of them ask for an email address, and none of them stop halfway and demand an account to see the result. If a tool on this page ever does, we have broken our own rule and you should tell us.
Which tool answers which question
| If you are asking… | Use |
|---|---|
| “Is the lease I am about to sign actually legal here?” | Lease audit |
| “How much deposit am I allowed to hold?” | Deposit limit checker |
| “They move in on the 17th — what do they owe me?” | Prorated rent |
| “Can this applicant actually afford it?” | Rent-to-income ratio |
| “What does this property really put in my pocket?” | Cash flow |
| “Should I make an offer on this one?” | Cap rate & cash-on-cash |
What these tools cannot do for you
They compute and they check; they do not advise. The calculators produce estimates from the numbers you type, and an estimate built on an optimistic vacancy assumption is an optimistic estimate. The lease audit checks a document against a per-state rules table covering all 50 states and DC — it does not know your city, and Chicago, New York City and San Francisco all impose requirements on top of their state’s.
Where real money or an eviction is at stake, none of this replaces a local attorney or an accountant. It replaces the guess you would otherwise have made.