Here is the place for the most current coupon policies for many of the stores you might shop at. If you are aware of other official coupon policies, please leave a comment below and I will get it added to the list!
::National Chains:
Target Coupon Policy
Target Price Matching Policy
Walmart Coupon Policy
Walmart Price Matching Policy (see my post here for more information on price matching at Walmart)
::Drugstores:
CVS Coupon Policy
Walgreens Coupon Policy
Rite Aid Coupon Policy
::Grocery Stores:
Safeway Coupon Policy
Giant Eagle Coupon Policy
Kroger Coupon Policy