D.C. Mun. Regs. tit. 9, § 209
209.1 The following is an example of the method to be used in computing taxes imposed by § 5 of Article 2 of the Act: Assume that a decedent who was not domiciled at the time of his death in the District left the following estate:
| Real estate and tangible personal property situated in the District | $ 50,000.00 |
|---|---|
| Assets in the State in which decedent was domiciled | 250,000.00 |
| Total estate | $ 300,000.00 |
| The federal estate tax, under the 1926 Federal Revenue Act | 4,500.00 |
| The maximum credit of 80% of this tax against which the estate may apply inheritance, estate, and succession taxes | 3,600.00 |
| Assume that the estate paid inheritance taxes of $ 300 to the District and inheritance taxes of $ 500 in another jurisdiction | 800.00 |
| Balance of 80% credit ($ 3,600 • $ 800) | 2,800.00 |
| One-sixth (ratio of real estate and tangible personal property in the District of the total estate) of $ 2,800 is the estate tax assessable by the District | 466.67 |
SOURCE: Commissioners' Order 299-637/12, effective June 14, 1944, 16 DCRR § 409.