Mitt Romney and his wife, Ann, paid $1.94-million in federal taxes on last year's income of $13.7-million, for an effective tax rate of 14.1%, his campaign said Friday.

That's slightly above the 13.9% rate the couple paid in 2010. Most of the 2011 income was from investments.

Campaign officials said the couple filed the return Friday with the Internal Revenue Service, after receiving an extension.