ShopKeep today announced $60 million in Series D funding led by investor Activant Capital with support from existing investors, according to a press release. 

ShopKeep said it plans to use the new capital to aggressively grow its overall U.S. customer base, strengthen industry partnerships, and launch international operations, starting this month with the U.K.

Steve Sarracino, founder of Activant Capital, will join ShopKeep's board of directors as a result of this investment, according to the announcement. ShopKeep has raised $97.2 million in funding to date.

"This is a crucial time for the mobile payments and small business technology sectors; both are evolving at a rapid pace and competition amongst the major players is heating up," Sarracino said in a statement. "ShopKeep is at the forefront of this evolution and is offering the most comprehensive and forward-thinking solution for growing businesses, combined with unmatched customer care. We see tremendous opportunity for the company to build on its existing success as the operating system for small business and retail, and rise above the noise to cement its position as the industry leader in this space."