Theory promo codes
4 of 40 Theory codes passed a checkout test. Each one lists what it covers and when it was last checked.
- Codes listed
- 40
- Verified
- 4
- Sitewide
- 27
- Last checked
- Oct 12, 2026
Verified codes
Accepted at checkout on the date shown15% Off
Verified
15% Off Storewide at Theory
- 15% off your order
- Works sitewide — no specific product required
- Applies to: storewide
15% Off
Verified
15% Off Storewide at Theory
- 15% off your order
- Works sitewide — no specific product required
- Applies to: storewide
- Excludes: apponly
15% Off
Verified
15% Off Storewide at Theory
- 15% off your order
- Works sitewide — no specific product required
- Applies to: storewide
SALE
Verified
Special Offer on (storewide) at Theory Outlet Storewide at Theory Outlet
- Works sitewide — no specific product required
- Applies to: storewide
Unverified codes
Listed as found; some may have ended60% Off
Not verified
Theory: Extended sale - up to 60% off plus an additional +10% off with code
25% Off
Not verified
25% Off Selected Styles at Theory Outlet
- 25% off your order
- Applies to: other
25% Off
Not verified
25% Off Select Styles with Theory Outlet's Mobile App
- 25% off your order
- Applies to: Select items
- Excludes: apponly
20% Off
Not verified
20% Off Select Items at Theory
- 20% off your order
- Applies to: Select items
20% Off
Not verified
20% Off Sale Items at Theory
- 20% off your order
- Applies to: Select items
20% Off
Not verified
20% Off Select Catgories (Must Order 1) Members Only at Theory Outlet
- 20% off your order
- Applies to: Select categories
- Excludes: members
20% Off
Not verified
20% Off Select Styles at Theory Outlet
- 20% off your order
- Applies to: Select items
20% Off
Not verified
20% Off Your Order at Theory Outlet
- 20% off your order
- Applies to: Select items
20% Off
Not verified
20% Off Storewide at Theory Outlet
- 20% off your order
- Works sitewide — no specific product required
- Applies to: storewide
20% Off
Not verified
20% Off Storewide at Theory
- 20% off your order
- Works sitewide — no specific product required
- Applies to: storewide
20% Off
Not verified
20% Off Select Items at Theory Outlet
- 20% off your order
- Applies to: Select items
15% Off
Not verified
15% Off Storewide at Theory
- 15% off your order
- Works sitewide — no specific product required
- Applies to: storewide
15% Off
Not verified
15% Off Storewide at Theory Outlet
- 15% off your order
- Works sitewide — no specific product required
- Applies to: storewide
15% Off
Not verified
15% Off Storewide at Theory
- 15% off your order
- Works sitewide — no specific product required
- Applies to: storewide
15% Off
Not verified
15% Off Storewide at Theory
- 15% off your order
- Works sitewide — no specific product required
- Applies to: storewide
15% Off
Not verified
15% Off Select Full Priced Items with Theory Outlet's Mobile App
- 15% off your order
- Applies to: Select items
- Excludes: apponly
15% Off
Not verified
15% Off (Storewide) at Theory Outlet
- 15% off your order
- Applies to: Select items
15% Off
Not verified
Theory Promo Code: 15% Off
15% Off
Not verified
Save 15% Off Your Purchase
15% Off
Not verified
15% Off Your Purchase at Theory
15% Off
Not verified
15% Off Your Order with Discount Code
15% Off
Not verified
15% Off Storewide at Theory
- 15% off your order
- Works sitewide — no specific product required
- Applies to: storewide
15% Off
Not verified
15% Off Storewide at Theory
- 15% off your order
- Works sitewide — no specific product required
- Applies to: storewide
15% Off
Not verified
15% Off Storewide at Theory Outlet
- 15% off your order
- Works sitewide — no specific product required
- Applies to: storewide
15% Off
Not verified
15% Off Storewide at Theory Outlet
- 15% off your order
- Works sitewide — no specific product required
- Applies to: storewide
15% Off
Not verified
15% Off Storewide at Theory Outlet
- 15% off your order
- Works sitewide — no specific product required
- Applies to: storewide
15% Off
Not verified
15% Off Storewide at Theory
- 15% off your order
- Works sitewide — no specific product required
- Applies to: storewide
15% Off
Not verified
15% Off Storewide at Theory
- 15% off your order
- Works sitewide — no specific product required
- Applies to: storewide
15% Off
Not verified
15% Off Storewide at Theory
- 15% off your order
- Works sitewide — no specific product required
- Applies to: storewide
15% Off
Not verified
15% Off Storewide at Theory
- 15% off your order
- Works sitewide — no specific product required
- Applies to: storewide
15% Off
Not verified
15% Off Storewide at Theory
- 15% off your order
- Works sitewide — no specific product required
- Applies to: storewide
15% Off
Not verified
15% Off Storewide at Theory
- 15% off your order
- Works sitewide — no specific product required
- Applies to: storewide
15% Off
Not verified
15% Off Storewide at Theory
- 15% off your order
- Works sitewide — no specific product required
- Applies to: storewide
15% Off
Not verified
15% Off Storewide at Theory Outlet
- 15% off your order
- Works sitewide — no specific product required
- Applies to: storewide
15% Off
Not verified
Get 15% Off Your First Order When You Sign Up for Emails
- Get 15% off your first order. Offer is valid for first-time email subscribers on full-priced items only. A promo code is required at checkout. Valid for one-time use only.
10% Off
Not verified
10% Off Select Items at Theory Outlet
- 10% off your order
- Applies to: Select items
How to use a Theory code
Show and copy the code
Start with a verified code. The code opens in a new tab and this tab continues to Theory.
Fill your bag at Theory
Add the items the code applies to. Sale items and some brands are often excluded.
Paste it at checkout
Enter the code in the promo field before you pay. If the total does not change, try the next code.
Questions about Theory codes
Does Theory have a working promo code right now?
Yes. 4 of the 40 Theory codes listed here passed a checkout test, most recently on October 12, 2026.
What is the best Theory promo code today?
The strongest offer we have on file is “15% Off Storewide at Theory”, which is verified.
Do Theory codes work on everything?
27 of the listed codes are described as sitewide. The rest are limited to selected items, a minimum spend or new customers; each code lists its terms where they are known.
How do I use a Theory promo code?
Select “Show code” on this page and copy the code, add your items to the bag at Theory, and paste the code into the promo or discount field at checkout before you pay. The order total should update straight away; if it does not, the code does not apply to your basket.
Why did my Theory code not work?
The usual reasons are an expired code, sale items that are excluded, a minimum spend that has not been reached, or a code limited to first orders. Codes marked “Verified” were accepted at checkout on the date shown; unverified codes are listed as found and may already have ended.
Codes are collected from public sources and re-checked on a rolling schedule; retailers can end an offer at any time. InfluencerRate may earn a commission when you shop through links on this page.