The four main young stars are planning to begin their own contract renegotiations with 20th Century Fox Television next week, The Hollywood Reporter says.
They are apparently paid a fraction of their adult counterparts and waited until Julie Bowen, Ty Burrell, Jesse Tyler Ferguson, Eric Stonestreet and Sofia Vergara had secured new deals before asking for a raise.
Rico Rodriguez (Manny), Nolan Gould (Luke) and Ariel Winter (Alex) have discussed negotiating together and demanding uniform salaries in a similar manner to the adult actors.
Sources say they will probably be paid the same anyway since the studio considers them of equal importance to Modern Family.
Sarah Hyland, 21, who plays Haley, will renegotiate her contract, but is already paid more since she has previously starred in shows such as Lipstick Jungle and One Life to Live.
It's unknown how much they currently make per episode, although sources state that Rodriguez and Gould likely made between $10,000 and $12,000 per episode for the first season and have received small raises since.
The negotiations aren't expected to be as hostile as the adults' salary talks, which led to the cancellation of the first table read for season four and a lawsuit.
They later agreed a deal for $170,000 (£108,000) to $175,000 (£111,000) an episode for season four, plus a small cut of the show's back-end profits.
This was in exchange for dropping the lawsuit and extending their seven-year contract by a year. The adults' salary will rise to $350,000 (£222,000) per episode in the show's eighth season.
Aubrey Anderson-Emmons, 5, who joined the show last season as Lily, isn't expected to receive a big raise since she plays a small part in the show.
Watch a clip of Modern Family below: