No, having COBRA doesn’t affect your eligibility for premium tax credits. However, you can only drop COBRA and sign up for a Marketplace plan and premium tax credits during Open Enrollment. You will have to drop your COBRA coverage effective on the date your new Marketplace plan coverage begins. After Open Enrollment ends, however, if you voluntarily drop your COBRA coverage or stop paying premiums, you will not be eligible for a special enrollment opportunity and will have to wait until the next Open Enrollment period.