If your income falls within the FPL parameters, the premium you're required to pay for insurance purchased through a Marketplace is reflected as a percentage of your household income. So based on the table above, if you have a family of three and your household income is between $19,720 and $99,440, you will be eligible for a PTC. The actual PTC amount is based on the premium for the second-lowest-cost Silver plan available through the Marketplace. If you elect to buy more expensive coverage, such as a Gold or Platinum plan, you'd be responsible for the additional premium.