Interstate migration flows are influenced by many factors,
including retirement, job opportunities, housing costs, and
climate. Experts disagree about how large a role taxes play in
migration, but that role will certainly be increased by the new
tax law.
The raw data suggest that taxes do influence migration. Of the 25 highest-tax states, 24 of them had net outmigration in 2016. Of the 25 lowest-tax states, 17 had net
in-migration. The largest out-migration is from high-tax
New York, whereas the largest in-migration is to low-tax
Florida. Florida is enjoying an influx of wealthy entrepreneurs and retirees looking for a tax climate that boasts no
income tax or estate tax.
https://object.cato.org/sites/cato.org/files/pubs/pdf/tbb-84-revised.pdf
https://fee.org/articles/americans-are-leaving-states-with-high-tax-rates-data-show/