The form 8962,
Premium Tax Credit (PTC), is generated by TurboTax when you enter your
information from your 1095-A form from the health insurance Marketplace. All
you need to do is enter you 1095-A. If you need to change your form or upgrade to do this, TurboTax will prompt you to do so.
See the TurboTax FAQ
below for instructions on what to do about the letter received from the IRS.
https://ttlc.intuit.com/replies/5824742