1/2 price Cheeseburgers at Sonics on 4/15/15 Tax Day! Check your local restaurants! 1/2 price Rib Dinner on Tax Day (4/15/15) at Sonny’s Barbecue! BOGO Boston Market Meals on 4/15/15 Tax Day! No coupon required! Limit 3 BOGOs per person/visit! FREE Sugar Cookie at Great American Cookie on Tax Day (4/15/15)! No Coupon Needed!