KEY POINTS
  • New York conducted about 3,000 "non-residency" audits a year between 2010 and 2017, collecting around $1 billion, according to a data company.
  • New York is looking at cellphone records, social media feeds, and veterinary and dentist records in verifying residency.
  • Auditors are even conducting in-home inspections to look inside taxpayers' refrigerators.

The cat-and-mouse game between state tax collectors and wealthy New Yorkers who are moving to Florida has reached new levels — and gone high tech.

New federal tax laws limiting the deduction of state and local income taxes have created incentives for wealthy New Yorkers to move to Florida or other lower-tax states. New York Gov. Andrew Cuomo last month blamed wealth flight for the state's $2.3 billion revenue shortfall in December and January.