Rent Payment Tenant shall pay the Base Rent for the Premises and any additional rent provided herein without deduction or offset. Rent for any partial month during the lease term shall be prorated to reflect the number of days during the month that Tenant occupies the Premises. Additional rent means amounts determined under Section 19 of this Lease and any other sums payable by Tenant to Landlord under this Lease. Rent not paid when due shall bear interest at the rate of one-and-one-half percent per month until paid. Landlord may at its option impose a late charge of $.05 for each $1 of rent for rent payments made more than 10 days late in lieu of interest for the first month of delinquency, without waiving any other remedies available for default. Failure to impose a late charge shall not be a waiver of Landlord’s rights hereunder.