Lotus and Marussia have ended doubts about their official participation in the 2014 championship.
When the governing FIA released the 2014 entry list last month, the two teams’ entries were listed as "subject to confirmation".
It subsequently emerged that the teams - competitive but financially struggling Lotus, and the small-budget backmarker Marussia - had been late in paying the higher FIA entry fees.
But France’s Auto Hebdo, and other international reports, now insist both teams "have paid" the fees to the Paris federation and are entitled to race in 2014.
Other reports said the FIA has confirmed the news.