Security deposit laws by state › Montana

Montana Security Deposit Law and Move-In Costs (2026)

Montana sets no statutory cap on the security deposit and requires it back within 30 days (or 10 days in the cases noted) with an itemized statement of deductions.

The rules

  • Maximum deposit: No statutory cap
  • Return deadline: 30 days (or 10 days in the cases noted). 30 days with deductions; 10 days if no deductions.
  • Interest: Not required.
  • Separate account: Not required.
  • Itemized deductions: Required with the refund.
  • Application fee: No statutory cap.

Statute: MCA §70-25-202. As of October 25, 2026.

Move-in cash at $1,500/month

First month's rent$1,500
Security deposit (one month, typical)$1,500
Application fee$40
Utilities and setup$150
Movers$400
Renters insurance$15
Total$3,605

With no cap, the deposit is whatever the lease says; one to two months is the market norm.

Run your own numbers for Montana

Getting the deposit back

Document the unit's condition at move-in with dated photos, give proper notice before leaving, return the keys, and hand the landlord a forwarding address in writing — in Montana and most states the return clock does not start until the landlord can reach you. Normal wear and tear cannot be deducted; damage, cleaning beyond normal use and unpaid rent can. If the deadline passes without a refund or itemized statement, small-claims court is the usual remedy, and many states add penalties of two or three times the deposit for bad-faith withholding.

Local rules

Cities and counties can add requirements on top of Montana law — interest, caps, inspection rights, fee limits. Check your city's housing or rental-standards office before signing.

Sources

Last reviewed October 25, 2026.