Superior Court Rules of the Probate Division - Rule 108. Court Costs and Filing Fees
(a) COURT COSTS ON VALUE OF ESTATE.
(1) Court costs are assessed on the value of a decedent’s estate, conservatorship estate, and minor child’s estate subject to a guardianship, excluding the value of real property, as follows:

$500 or less ... No cost (N/C)
Over $500 to $2,500 ... 15.00
Over $2,500 to $15,000 ... 50.00
Over $15,000 to $25,000 ... 100.00
Over $25,000 to $50,000 ... 150.00
Over $50,000 to $75,000 ... 250.00
Over $75,000 to $100,000 ... 350.00
Over $100,000 to $500,000 ... 575.00
Over $500,000 to $750,000 ... 825.00
Over $750,000 to $1,000,000 ... 1,275.00
Over $1,000,000 to $2,500,000 ... 1,800.00
Over $2,500,000 to $5,000,000 ... 2,300.00
Over $5,000,000 to $50,000,000 ... 2,300.00 plus 0.02% of amount over $5,000,000
Over $50,000,000 ... 11,300.00

(2) Court costs in the total amount of $25.00 are assessed for all real property in the District of Columbia.