The vast majority of Brown's income is from her work on Stranger Things. According to Capital FM, the actress received roughly $30,000 per episode of the Netflix series for season one. Since, she's ended up at a net worth of about $3 million currently.
According to Pop Buzz, Brown's worth is set to increase dramatically thanks to the global popularity of Stranger Things. Apparently, all of the stars of the hit series can expect a significant salary increase for their work on the show. For Brown, this means that for season three, she can expect to earn anywhere from $300,000 to $350,000, according to The Hollywood Reporter. That's a pretty penny for a 14-year-old.
Much like other young, influential stars, Brown also makes money from endeavors and partnerships outside of just acting and Stranger Things. According to Capital FM, Brown has a modeling deal with IMG in addition to being endorsed by a variety of brands including Calvin Klein, Converse, and Moncler.