SAP Ventures led a second successive round of financing for the online pay index, with the latest round taking PayScale to about $31m raised so far.

US-based online salary index PayScale has secured a $7m round of financing, led by SAP Ventures, the corporate venturing unit of Germany-based software conglomerate SAP.

SAP Ventures had already led a $10.3m round of series C financing for PayScale, which closed in July 2007. The round was also participated in by research and consultancy firm The Corporate Executive Board and media-focused investment bank Allen & Co.

A 2009 Securities and Exchange Commission filing shows PayScale later attracted $3.5m…