Answer: If the lease has just expired, there has been no lease renewal, and the resident is to vacate, any acceptance of rent by the landlord for a period after the date of lease expiration will start a month-to-month tenancy. So, to avoid starting the month-to-month tenancy and preserve the landlord’s right to evict, that rent payment may be rejected. If the landlord has served a Demand for Compliance or Possession (3 Day Notice) due to non-payment, a partial payment within the three days may be rejected. Any payment made after the three day deadline has passed may also be rejected. Reject a payment by mailing a refund of the rejected payment amount with a written letter stating that the payment has been rejected and why within two business days of the date the payment was received. Keep copies of your letter stating that the payment has been rejected as well as the refund check.