The carnival company hired for a Queens elementary school’s end-of-year festival that only paying students could attend is now offering to throw a free bash for the banned kids.

“I’m in the business for over 25 years and always put kids first,” said Gary Pincus, president of Send in the Clowns Entertainment. “Therefore, I would love to do a free carnival for all the kids that weren’t permitted to attend.”

PS 120 in Flushing hired Send in the Clowns to set up a carnival on its property during school hours Thursday. But about 100 of the students — many from low-income immigrant families — were not allowed to attend because their parents did not pay the $10 fee.

Some of them cried as they were forced to sit in the school’s auditorium while they listened to classmates enjoying inflatable slides, tea-cup rides and flavored ices outside.

The event brought in around $2,000 to $3,000 in profit for future projects, school sources said.

Pincus said he’s happy to host the make-up party as soon as possible.

“If I had known that there were kids not allowed to attend the carnival, I would have paid for them,” he said, explaining that school carnivals are supposed to be for “all the children as a reward for getting through the school year.”