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$75 Off $350+ purchase. Offer valid for 30 days, one-time use only, and applied when the code is entered at checkout. Valid online at theory.com in the US only. Excludes Theory Outlet, sale merchandise, gift cards, Common Projects products.
20% Off End of Season Sale
15% Off Your Order
15% Off With Code
$75 Off $350+. Online only at theory.com in the US. Valid for one time use on full priced products only. Excludes Sale Merchandise, gift cards, and Common Projects products. Offer valid for 30 days.
Mobile App Only
Offers last updated Thursday, October 8, 2026
Theory currently has 9 current offers listed. Availability and terms can change, so check the offer details before checkout.
One current featured Theory offer is "15% Off". Availability and terms can change, so review the offer details before checkout.
When a code is listed, copy it from this page, add your items to your Theory cart, and paste the code in the promo code field at checkout. Check the offer terms to confirm the discount applies.
The offer and store data on this page was last updated Thursday, October 8, 2026. Offer terms can change after that date, so check the details before shopping.
Theory is a contemporary fashion brand offering sophisticated, minimalist wardrobe essentials, precision tailoring, and workwear for men and women in the United States.
