District of Columbia Code Division VIII. General Laws. § 47-1806.09a. Tax on residents and nonresidents --Credits --Lower income, long-term homeowner credit --Allowable credit.

(a) Subject to subsection (b) of this section and § 47-1806.09b, an eligible resident shall be allowed a credit against the tax imposed by § 47-1806.03 computed as follows: the amount of the real property tax imposed on the eligible residence under § 47-811 during the real property tax year ending in the tax year for which the credit is allowed, less 105% of the real property tax under § 47-811 imposed on the eligible residence under § 47-811 during the prior real property tax year.

(b) If an eligible residence is a unit within a cooperative housing association, the credit shall be computed in accordance with subsection (a) of this section using the net amount of real property tax apportioned to the eligible residence by the cooperative housing association as the amount of real property tax imposed. The cooperative housing association shall provide to the eligible resident upon his request data concerning the amount of real property taxes apportioned to his or her eligible residence by the cooperative housing association for the real property tax year ending in the tax year for which the credit is allowed and the prior real property tax year, accounting for real property tax credits and deductions passed through to the eligible resident to include the homestead deduction under § 47-850.01 and the senior citizen deduction under § 47-863.