Between driving for Uber and Lyft and managing a tax preparation office for part of the year, Jerone Gillespie expects to earn about $25,000 in 2020, before taxes.

Still, the 23-year-old has big financial goals: Although he doesn't contribute to savings on a regular basis, Gillespie aims to save and invest around $10,000 a year. He transfers money out of his checking account when he reaches a balance that's higher than he needs to cover his monthly expenses.