California, with its relatively large tax burden compared to other states, has seen a taxpayer exodus in recent years and, along with it, billions in taxable gross income.
State-to-state migration data recently released by the Internal Revenue Service (IRS) shows that California lost an estimated net 70,534 households—or 165,355 taxpayers and their dependents—in the years 2017–2018, with those fleeing taking around $8.8 billion in net adjusted gross income with them.