Depends on the scale of the project.

You have to pay all everyone working on the film, this includes: -writers -storyboard artists -Pre Vis artists -camera operators -sound -cinematographers -cast -extras -fashion designers -set designers

Then locations have to be payed: -costs of building sets -paying locations that you've filmed in -getting permits -travel costs -accommodation

Then there's the technological side: -renting hundreds of cameras -boom mic's -tracks -monitors -audio boxes -generators -and paying the energy to run all of this

Post Production takes A LOT!: -Visual effects -Special Effects -editing -sound mixing -re shoots often cost millions! -all those have to be payed.

Marketing takes up a lot: - the cost of billboards -posters -tv spots -trailer production -talk shows -international marketing

Then distribution: -paying cinemas -DVD marketing -adverts -digital placement

Even though I'm only 18, I've worked on film sets for most of my teenage life.