Tools · Security Deposit
Montana Security Deposit Calculator (2026)
Enter your rent and move-out date to see the most a Montana landlord can charge and the exact date your deposit is due back — no statutory cap here, returned 10 days if no deductions, 30 days with an itemized list after the tenancy terminates or the tenant surrenders and the landlord accepts the premises, whichever occurs first.
Montana security deposit calculator
These are the Montana figures applied to what you entered: a plain summary of the rule and the dates, not a determination that anyone did or did not comply.
- Maximum deposit
- No statutory cap
- Monthly rent
- $2,000
- Move-out date
- Not entered
- Return deadline
- 10 days if no deductions, 30 days with an itemized list after the tenancy terminates or the tenant surrenders and the landlord accepts the premises, whichever occurs first
Plain-language summary, not legal advice.
Informational only, not legal advice. Security-deposit rules carry exceptions (lease type, small landlords, city ordinances) this summary cannot weigh. See the full statute and exceptions on the Montana security deposit reference, cited to Mont. Code Ann. §§70-25-101 to 70-25-206.
How Montana security deposits work
Montana sets no maximum on a residential security deposit, so the amount is whatever you and the landlord agree to, though one to two months of rent is typical. The return timeline splits in two. If the landlord takes no deductions, the full deposit is due back within 10 days. If the landlord deducts for unpaid rent, damage, or cleaning, it must instead deliver a written itemized list of those charges and pay any remaining balance within 30 days. That 30-day window runs from whichever happens first: the tenancy ending, or you handing back the unit and the landlord accepting it. A landlord who never sends the required written list gives up the right to keep any of your deposit for damage or cleaning. Montana does not require the landlord to pay interest on your deposit or to hold it in a separate account.
This calculator shows the Montana figures applied to your own rent and dates. It is informational only and not legal advice — exceptions this summary cannot weigh may apply. For the full rules, penalties, and citations, see the Montana security deposit reference.
Security deposit calculators for other states
Same tool, each with its own cap and return deadline.