How much is the tax penalty for not having an individual health insurance plan?

As of January 1, 2019, there is no longer a federal penalty for not having an individual medical insurance policy through a private insurance company or the health insurance exchanges. However, residents in the states of New Jersey, Vermont, California, Rhode Island, Massachusetts and the District of Columbia (Washington, D.C.) are subject to a tax penalty for not having ACA-compliant health insurance.