Tenants Projected Share of Taxes means the sum of the Tax Payment (as hereinafter defined), if any, payable by Tenant for the immediately prior Tax Year divided by twelve (12) and payable monthly by Tenant to Landlord as additional rent. 5.02 If the Taxes for any Tax Year shall be more than the Base Tax Rate, Tenant shall pay, as additional rent for such Tax Year, an amount equal to Tenant's Proportionate Share of the amount by which the Taxes for such Tax Year are greater than the Base Tax Rate. (The amount payable by Tenant is hereinafter referred to as the "Tax Payment".) The Tax Payment and the Base Tax Rate shall be appropriately prorated, if necessary, to correspond with that portion of a Tax Year occurring within the Term of this Lease. The Tax Payment shall be payable monthly by Tenant within ten (10) days after receipt of a demand from Landlord therefor, which demand shall be accompanied by a copy of the tax bill together with Landlord's computation of the Tax Payment (herein referred to as the "Tax Statement"). If the Taxes for any Tax Year are payable to the taxing authority on an installment basis, Landlord may serve such demands upon, and the Tax Payment for such Tax Year shall be payable by Tenant, on a corresponding installment basis. 5.03 Notwithstanding the fact that the increase in rent is measured by an increase in Taxes, such increase is additional rent and shall be paid by Tenant as provided herein regardless of the fact that Tenant may be exempt, in whole or in part, from the payment of any taxes by reason of Tenant's diplomatic or other tax exempt status or for any other reason whatsoever. 5.04 Only Landlord shall be eligible to institute tax reduction or other proceedings to reduce the assessed valuation of the Land and Building. Should Landlord be successful in any such reduction proceedings and obtain a rebate or a reduction in assessment for periods during which Tenant has paid or is obligated to pay Tenant's Proportionate Share of increases in Taxes then either (a) Landlord shall, in the event a rebate is obtained, return Tenant's Proportionate Share of such rebate to Tenant after deducting Landlord's expenses, including without limitation, attorneys' fees and disbursements in connection with such rebate (such expenses incurred with respect to a rebate or reduction in assessment being hereinafter referred to as "Tax Expenses"), or, (b) if a reduction in assessment is obtained prior to the date Tenant would be required to pay Tenant's Proportionate Share of such increase in Taxes, Tenant shall pay to Landlord, upon written request, Tenant's Proportionate Tax Share of such Tax Expenses.