The agency will invest a total of $55 million into the new benchmarks, including $20 million into a Boeing spacecraft safety review set for completion in July 2014, NASA said Thursday.
NASA has allotted $20 million for SpaceX dragon parachute tests ending in late 2013 and another $15 million for incremental critical design review and reaction control system testing by SNC.
William Gerstenmaier, associate administrator for human exploration and operations at NASA, the revisions to each company's Space Act agreements are intended to help them in their work, address risk issues and accelerate project schedules.
He added that the three companies are on track with the project under the Commercial Crew Integrated Capability initiative.
The funds will come from NASA's fiscal 2014 budget.