A tax credit that can help you afford coverage bought through the Marketplace. Sometimes known as APTC, “advance payments of the premium tax credit,” or premium tax credit. Unlike tax credits you claim when you file your taxes, these tax credits can be used right away to lower your monthly premium costs. If you qualify, you may choose how much advance credit payments to apply to your premiums each month, up to a maximum amount. If the amount of advance credit payments you get for the year is less than the tax credit you're due, you'll get the difference as a refundable credit when you file your federal income tax return. If your advance payments for the year are more than the amount of your credit, you must repay the excess advance payments with your tax return.