§PlainStatute

Tools · Security Deposit

Oregon Security Deposit Calculator (2026)

Enter your rent and move-out date to see the most a Oregon landlord can charge and the exact date your deposit is due back — no statutory cap here, returned 31 days after the tenancy ends and the tenant hands back possession of the unit.

Cited to ORS 90.300Source: Oregon Revised Statutes 90.300 (Security deposits; prepaid rent).

Oregon security deposit calculator

Security deposit · Oregon
Oregon rule applied to your numbers
Maximum deposit
No cap
Oregon sets no statutory maximum; your lease sets the amount. ORS 90.300 does not cap the security deposit amount. Portland is the exception: under city code, if the landlord requires last month’s rent then the security deposit cannot exceed one-half of one month’s rent, and if last month’s rent is not required the deposit cannot exceed one month’s rent. A separate state rule bars a landlord from requiring a new or increased security deposit during the first year after the tenancy begins.
Return deadline
31 days
31 days after the tenancy ends and the tenant hands back possession of the unit. Enter your move-out date for the exact deadline.

These are the Oregon 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.

If a deposit is wrongly kept
If the landlord keeps money without giving a written accounting, or keeps it in bad faith, the tenant can recover twice the amount that was wrongfully withheld. A prevailing tenant may also recover court costs and reasonable attorney fees.
Interest on the deposit
State law does not require a landlord to pay interest on a security deposit. Portland is different: if a Portland landlord holds the deposit in an interest-bearing account, the interest belongs to the tenant (the landlord may keep a small administrative share), so check the local rule if you rent in the city.
Local ordinances
Portland adds its own rules under city code. Deposits are capped (one month’s rent, or one-half month’s rent if last month’s rent is also collected), must sit in a segregated federally insured account, and any interest earned belongs to the tenant. Check the Portland Housing Bureau if you rent in the city.

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 Oregon security deposit reference, cited to ORS 90.300.

How Oregon security deposits work

Oregon gives a landlord 31 days after your tenancy ends and you hand back the unit to either return your security deposit or send you a written accounting that spells out exactly what is being kept and why. If the landlord keeps money without that written accounting, or keeps it in bad faith, you can recover twice the amount that was wrongfully withheld, and a court can add your costs and attorney fees. State law sets no cap on how large the deposit can be, though it bars a landlord from requiring a new or larger deposit during your first year in the unit. A landlord can claim only what is reasonably necessary to cover unpaid rent, other defaults, and damage you caused, never ordinary wear and tear. All of this comes from ORS 90.300. Portland renters get extra protection: the city caps the deposit, requires a segregated bank account, and hands any interest earned back to the tenant.

This calculator shows the Oregon 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 Oregon security deposit reference.

Security deposit calculators for other states

Same tool, each with its own cap and return deadline.