 [ Symptoms ] if i sign up for insurance through my marketplace when will coverage begin [ Disease ] if you sign up between october 1 2013 and december 31 2013 your coverage will begin january 1 2014 if you sign up between january 1 2013 and february 28 2014 your coverage should begin soon after your application is approved february 28 2014 is the last day to enroll in the marketplace in 2014