CSRA said this week sales during its most recent quarter reached $1.3 billion, up 7 percent from the same three-month period a year earlier.
The contractor's quarterly profit hit $188 million, up from $126 million a year earlier.
In a call with analysts Wednesday afternoon, Larry Prior, CSRA's chief executive, said the company plans to return savings from the new tax legislation to the bottom line.
"We're investing in our people and our solutions, especially around platforms," Prior said. "The new tax rate derisks that investment and buttresses our ability to remain on the leading edge of technology. The majority of the tax-reform savings will fall to the bottom line."