I have a one year lease that ends 11/1/13. I paid first($750), last($750) and deposit($500) upon signing the lease. It is now 9/17/13, this months rent has been paid and next month is my final month. I am moving out on 10/7/13. Am I breaking my lease, even though my last month (October) was paid in full at the time I signed, and can my landlord keep my security deposit because of this fact? If I give him a 30 day written notice now, that date would be after I have moved but still within the time that I have already paid for and could legally stay. Any help would be greatly appreciated.. I was tipped off that he may not be returning my security deposit. Lease says nothing about deposit and nothing about notice. It says "tenant agrees to comply with all obligations imposes upon tenant pursuant to ORS 90.