Tax Day is one of the most stressful "holidays" of the year. To help take the sting out of paying Uncle Sam and relieve the anxiety of rushing to file on time, a number of stores and restaurants offer deals to mark the tax deadline — Monday, April 15, this year. Celebrate sending in those pesky tax forms with these discounts and freebies. Some deals are still being announced and most offers are valid only at participating locations, so be sure to contact your local store or restaurant.