Fi promo codes
21 of 40 Fi codes passed a checkout test. Each one lists what it covers and when it was last checked.
- Codes listed
- 40
- Verified
- 21
- Sitewide
- 28
- Last checked
- Oct 14, 2026
Verified codes
30% Off
Verified
30% Off Select Items at Fi Dogs
- 30% off your order
- Applies to: Select items
30% Off
Verified
30% Off (Storewide) at Fi
- 30% off your order
- Works sitewide — no specific product required
- Applies to: storewide
30% Off
Verified
30% Off Select Items at Fi Dogs
- 30% off your order
- Applies to: Select items
5% Off
Verified
5% Off Storewide at Fi Dogs
- 5% off your order
- Works sitewide — no specific product required
- Applies to: storewide
$20 Off
Verified
$20 Off Storewide at Fi Dogs
- Works sitewide — no specific product required
- Applies to: storewide
$20 Off
Verified
$20 Off Fi Series 3 Collar at Fi
- Applies to: Select items
$20 Off
Verified
$20 Off Select Items at Fi
- Applies to: Select items
$20 Off
Verified
$20 Off Storewide at Fi Dogs
- Works sitewide — no specific product required
- Applies to: storewide
$20 Off
Verified
$20 Off Activation Fee for Fi Series 3 Collar at Fi
- Applies to: Select items
$20 Off
Verified
$20 Off Activation Fee For Fi Series 3 Collar Kit at Fi
- Applies to: Select items
$20 Off
Verified
$20 Off Storewide at Fi Dogs
- Works sitewide — no specific product required
- Applies to: storewide
$20 Off
Verified
$20 Off Storewide at Fi Dogs
- Works sitewide — no specific product required
- Applies to: storewide
$20 Off
Verified
$20 Off Waived Activation Fee for Fi Series 3 Collar Kit Free Month at Fi
- Applies to: Select items
$20 Off
Verified
$20 Off Series 3 at Fi Dogs
- Applies to: Select items
$20 Off
Verified
$20 Off Fi Series 3 Pink at Fi
- Applies to: Select items
$20 Off
Verified
$20 Off Storewide at Fi Dogs
- Works sitewide — no specific product required
- Applies to: storewide
$20 Off
Verified
$20 Off Storewide at Fi Dogs
- Works sitewide — no specific product required
- Applies to: storewide
Free Gift
Verified
Free Gift Storewide at Fi Dogs
- Works sitewide — no specific product required
- Applies to: storewide
Free Gift
Verified
Free Gift Storewide at Fi Dogs
- Works sitewide — no specific product required
- Applies to: storewide
SALE
Verified
Free Activation + Free Extra 1 Month Storewide at Fi Dogs
- Works sitewide — no specific product required
- Applies to: storewide
SALE
Verified
1 Month Free Select Items at Fi
- Applies to: other
Unverified codes
Listed as found; some may have ended25% Off
Not verified
25% Off Fi Series 3 at Fi
- 25% off your order
- Applies to: Select items
25% Off
Not verified
25% Off Storewide at Fi
- 25% off your order
- Works sitewide — no specific product required
- Applies to: storewide
25% Off
Not verified
25% Off Storewide at Fi
- 25% off your order
- Works sitewide — no specific product required
- Applies to: storewide
20% Off
Not verified
20% Off Eligible Purchases
15% Off
Not verified
15% Off Storewide at Fi
- 15% off your order
- Works sitewide — no specific product required
- Applies to: storewide
$70 Off
Not verified
Up To $70 Off Your Order
$25 Off
Not verified
$25 Off Storewide at Fi
- Works sitewide — no specific product required
- Applies to: storewide
$25 Off
Not verified
$25 Off Storewide at Fi
- Works sitewide — no specific product required
- Applies to: storewide
$25 Off
Not verified
$25 Off Storewide at Fi
- Works sitewide — no specific product required
- Applies to: storewide
$25 Off
Not verified
$25 Off Storewide at Fi
- Works sitewide — no specific product required
- Applies to: storewide
$25 Off
Not verified
$25 Off Storewide (Minimum Order: $124) at Fi
- Works sitewide — no specific product required
- Applies to: storewide
$25 Off
Not verified
$25 Off Storewide at Fi
- Works sitewide — no specific product required
- Applies to: storewide
$20 Off
Not verified
$20 Off Series 3 at Fi Dogs
- Applies to: Select items
$20 Off
Not verified
$20 Off Storewide at Fi Dogs
- Works sitewide — no specific product required
- Applies to: storewide
$20 Off
Not verified
$20 Off Your Order
$20 Off
Not verified
$20 Off Your Activation Fees
$20 Off
Not verified
$20 Off Your Order
$20 Off
Not verified
$20 Off Your Order
$20 Off
Not verified
$20 Off Your Order
How to use a Fi code
Show and copy the code
Start with a verified code. The code opens in a new tab and this tab continues to Fi.
Fill your bag at Fi
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 Fi codes
Does Fi have a working promo code right now?
Yes. 21 of the 40 Fi codes listed here passed a checkout test, most recently on October 14, 2026.
What is the best Fi promo code today?
The strongest offer we have on file is “30% Off Select Items at Fi Dogs”, which is verified.
Do Fi codes work on everything?
28 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 Fi promo code?
Select “Show code” on this page and copy the code, add your items to the bag at Fi, 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 Fi 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.