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Montana Security Deposit Return Deadline
The rule
| Deadline | 10 days if nothing is deducted; 30 days if there are deductions |
|---|---|
| Maximum deposit | No cap |
| Penalty for wrongful withholding | Forfeiture of deductions; liable for amount withheld |
| Statute | Mont. Code § 70-25-202 |
Montana deadline calculator

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What to send the tenant
Send the remaining deposit, or a written, itemized list of each deduction with its cost (free letter template), to the tenant's forwarding address before the deadline. Keep proof of the date you sent it. Normal wear and tear generally can't be deducted, and a deduction is strongest when your signed move-in report shows the item was in good condition.
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Common questions
How long does a landlord have to return a security deposit in Montana?
Under Mont. Code § 70-25-202, a Montana landlord has 30 days to return the deposit or send an itemized statement of deductions. Details: 10 days if nothing is deducted; 30 days if there are deductions.
What is the maximum security deposit in Montana?
Montana law sets no maximum security deposit.
What happens if a Montana landlord misses the deadline or withholds in bad faith?
The penalty in Montana: forfeiture of deductions; liable for amount withheld. Missing the deadline can also cost the landlord the right to keep any of the deposit.
Last reviewed November 2026. Summary of Mont. Code § 70-25-202, cross-checked against multiple published sources. General information, not legal advice. Laws change, and cities and counties can add requirements. Read the statute or ask a local attorney before you act.