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Fi promo codes for October 2026

We confirm every code and deal on this page on Fi's own pages and in posts about it, and each says when. 7 of 7 still work — the rest are listed below with the date they stopped.

Last checked 6 days ago
0 working codes
Best today: 5% off
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Working Fi codes today

  • FREE
    Deal

    Free shipping on orders of $100 or more

    Orders below the threshold are charged a flat $9 shipping fee.

    Min. spend $100Shipping
    Verified· 6d ago
    See terms & exclusions

    Orders with a product subtotal under $100 are charged a $9 flat shipping fee.

  • $35
    Deal

    Save $35 on a 6-month Fi membership

    The prepaid plan costs $99, listed as the equivalent of $3.80 per week.

    Memberships
    Verified· 6d ago
  • $50
    Deal

    Save $50 on a 1-year Fi membership

    The prepaid plan costs $189, listed as the equivalent of $3.60 per week.

    Memberships
    Verified· 6d ago
  • $70
    Deal

    Save $70 on a 2-year Fi membership

    The prepaid plan costs $339, listed as the equivalent of $3.20 per week.

    Memberships
    Verified· 6d ago
  • DEAL
    Deal

    One-month Fi trial with a pre-owned Series 3+

    The trial includes a new collar band; shipping is payable.

    Trial
    Verified· 6d ago
    See terms & exclusions

    Just pay shipping.

  • 5%
    Deal

    5% off Fi memberships for multiple pets

    The discount applies to all of your Fi memberships when you have multiple pets.

    Memberships
    Verified· 6d ago
  • DEAL
    Deal

    Free Fi Series 3+ with a new membership

    Every new membership includes the device. The redeem page lists an activation fee in addition to the $99 device price.

    Memberships
    Verified· 6d ago

Shopper reports this week

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Fi prices worth acting on

Prices read 21 Oct 2026 from Fi's deals page
Pet GPS trackers

Fi Ultra

$299

A satellite-GPS tracker with up to 5 days battery for off-leash dogs.

See it on Fi
Smart dog collars

Fi Series 3+

$129

An all-in-one smart collar with up to 3 months battery for medium to large dogs.

See it on Fi
Pet trackers

Fi Mini

$99

A small, light tracker with AI health insights that suits any dog size.

See it on Fi
Cat trackers

Fi Mini

$99

A snug, light cat tracker with real-time roaming and rest tracking.

See it on Fi

When Fi actually discounts

Our estimate of when Fi's biggest discounts of the year happen, month by month. November is the month to wait for.

62%of Fi's biggest discounts happen in November
Share of biggest discounts by month (%)

How to apply a code at Fi

  1. 1

    Copy the code above

    Start with the one verified most recently, not the biggest number.

  2. 2

    Open your cart

    Select the cart icon to open your cart page. The promo code field is shown directly on this page.

  3. 3

    Enter and apply your code

    Type your code into the promo code field. Then select the apply button to apply it.

  4. 4

    Check the total dropped

    If Fi shows "Invalid code", the code did not work — tell us, and a code shoppers report as failing moves to the bottom of the list.

Everything else worth knowing before you buy

Returns
Fi allows refunds or billing error notifications within 30 days of purchase. For Free Trial devices, customers must return the item within 14 days of trial completion and pay $9 for shipping.
Best month to buy
November — about 62% of Fi's biggest discounts of the year fall in it, by our estimate.
Customer service
Fi can be reached by phone at +1 (855) 343-4688 or email at [email protected]. The site does not list specific business hours, only that they aim to respond in a timely manner.

Fi sale calendar

Our estimate of when Fi's biggest discounts of the year happen
In 5 weeks

Black Friday Sale

The post-Thanksgiving kickoff of the holiday shopping season, with deals across Fi collars and accessories.

49% of its biggest discounts
In 6 weeks

Cyber Monday Sale

The online-focused follow-up to Black Friday, offering deals on Fi devices and memberships.

11% of its biggest discounts
In 6 weeks

Christmas Sale

A holiday-season sale on Fi collars, accessories and gift cards in the run-up to Christmas.

8% of its biggest discounts
In 2 months

January Sale

A new-year sale promoting Fi products at the start of the calendar year.

2% of its biggest discounts

Fi coupon questions

Six questions people actually ask us.

Does Fi offer a free trial, and what happens when it ends?

Fi may offer a free 30-day trial of its membership in select countries, and you pay only for shipping upfront. The trial starts when you activate your device or 7 days after purchase, whichever comes first, and then rolls into a paid one-year membership at $189, or $279 CAD where applicable, or the current one-year price for your country.

Does Fi refund membership fees if I return the collar?

Yes, if you terminate and return Fi products under the Fi Return Policy, the associated subscription or membership fees are fully refunded.

Does the Fi membership renew automatically?

Yes, unless you opt out, it renews at the end of each commitment period for the same length at the then-current price. To change or end it, email [email protected].

Where can I use a Fi gift card?

Fi gift cards can be used for any collar kits or accessories on tryfi.com. The recipient is emailed a link to redeem the gift.

What payment methods does Fi accept?

Fi accepts Visa, MasterCard, or any other card issuer it accepts, as well as an account with a third-party service provider. Charges may also go through a financing party where applicable.

How much is a Fi gift card?

A Fi gift card comes in $120, recommended for a Fi product plus 6 months of service, $210, recommended for a Fi product plus 1 year of service, and $360, recommended for a Fi product plus 2 years of service.

Keep looking

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