Google Ventures has led a $15 million investment in Rocketrip, the tool that gives employees rewards if they "travel smart".
The Series C round brings the total amount of funding in the U.S.-based company to date up to $32 million.
Other backers in he round include Bessemer Venture Partners and Canaan Partners, both of which have backed the company with earlier investments.
Erik Nordlander, a partner at GV, joins the Rocketrip board of directors as part of the investment deal.
The latest round will be used to expand the sales team as the company looks to partner with more companies in the Fortune 1000 range, as well as grow its enterprise customer portfolio.
Rocketrip claims to have saved an average of $208 per business travel for those using its platform during 2017.
This works by the platform predicting the cost of a business trip and then rewarding an employee with a portion of the savings they made when they made a booking.
Part of its strategy will be work with travel management companies to develop new tools for those operating within existing managed travel programs.
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Earlier this year, Google's own Area 120 internal incubation lab revealed it was testing a similar product to the Rocketrip service known as Yondo.
The app creates instant travel budgets for employees of a company.
It then uses a mechanism to incentivize the workforce to save money on their corporate travel plans.
Google says the Yondo project is a "very early experiment" and has declined to share any further details.