	December 31, 2020			March 31, 2020
Gross carrying amount	$	91,243		$	75,212
Accumulated amortization		(50,153	)		(38,208	)
Net capitalized software costs	$	41,090		$	37,004

During the nine months ended December 31, 2020, we retired $2,882 of fully amortized capitalized software costs that are no longer being utilized by our client base.

Amortization expense related to capitalized software costs was $4,975 and $4,282 for the three months ended December 31, 2020 and 2019, respectively, and is recorded as cost of revenue in the condensed consolidated statements of net income and comprehensive income.

Amortization expense related to capitalized software costs was $14,828 and $12,962 for the nine months ended December 31, 2020 and 2019, respectively.

The following table presents the remaining estimated amortization of capitalized software costs as of December 31, 2020. The estimated amortization is comprised of (i) amortization of released products and (ii) the expected amortization for products that are not yet available for sale based on their estimated economic lives and projected general release dates.

For the year ended March 31,
2021 (remaining three months)	$	8,300
2022		19,800
2023		9,600
2024		3,390
Total	$	41,090