Ferrari and the rest of the teams in the Formula One Teams' Association (Fota) have submitted conditional entries for the 2010 championship.
Williams announced on Monday that they intend to enter next season's campaign.
McLaren, BMW Sauber, Toyota, Renault, Red Bull Racing, Toro Rosso and Brawn GP have now all followed suit.
The move would appear to bring an end to the recent row with the sport's governing body, the FIA, over the voluntary budget cap.
A statement on behalf of the Fota said: "Fota confirms all its members' long-term commitment to be involved in the FIA Formula One World Championship and has unanimously agreed further and significant actions to substantially reduce the costs of competing in the championship in the next three years."