Citi Ventures, a unit of Citigroup, has invested in Billing Revolution, a mobile payments provider. Last year Citi Ventures sponsored Billing Revolution’s Single-Click Checkout, a cross-platform, low-friction mobile billing service.

“At Citi, we want to help design the future of money for our consumer, business and institutional clients globally. Our efforts are focused on creating and capturing maximum value in emerging and disruptive markets spaces,” said Christopher Kay, managing director, Citi Ventures. “We look to invest in startups with great teams and unique, defensible IP that solve global challenges. Billing Revolution fits that bill, and we are pleased to be able join DCM and SK Telecom Ventures in this latest round of financing.”

“Besides the industry validation that Citi Ventures’ investment represents, we are excited to leverage Citi’s global payments knowledge and infrastructure to really move the needle,” said Andy Kleitsch, founder and CEO of Billing Revolution. “Citi more than just ‘gets it’. They share our vision, and we will clearly benefit from this relationship.”