How the Fanatics SIBONUS promo works for Broncos-Chiefs

Mahomes is back Monday night, and Fanatics will refund a losing $1 bet as FanCash for 10 straight days.

Sep 14, 2026

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How the Fanatics SIBONUS promo works for Broncos-Chiefs

Mahomes is back Monday night, and Fanatics will refund a losing $1 bet as FanCash for 10 straight days.

In brief

Mahomes is back Monday night, and Fanatics will refund a losing $1 bet as FanCash for 10 straight days. This is a 10-day drip, not a lump sum: you only reach $1,000 by losing $100 a day for 10 days in a row, and each FanCash credit dies after seven days. Originally reported by SI.

Mahomes is back

Mahomes is back

Patrick Mahomes returns Monday night after nine months out with an ACL injury. The Chiefs host the Broncos in an AFC West opener between two of the division's sharpest offenses.

Up to $1,000 in FanCash

Claim up to $1,000 in FanCash with the Fanatics Sportsbook promo code for Broncos vs Chiefs Monday Night Football betting.

Fanatics is offering new users as much as $1,000 in FanCash through a promo code tied to the Monday night game. The code is available through Sept. 14.

It runs over 10 days

The bonus is not a single payout. It builds across your first 10 days on the platform, one qualifying bet at a time.

“a chance to earn bonus funds over their first 10 days on the platform”

Bet $1, lose, get it back

Wager at least $1 on any market priced at minus-500 or longer. If the bet loses, Fanatics returns your stake as FanCash, capped at $100 per day.

The math on $1,000

To hit the full grand you need to lose $100 every day for 10 consecutive days. Win your bets and you keep the profit instead, but the FanCash never lands.

A worked example

Put $50 on the Broncos to cover at minus-110. Denver covers, you keep the winnings. Denver falls short, $50 in FanCash hits your account for Tuesday's slate.

Where it is available

New users only, in 25 states plus DC: AZ, CO, CT, DC, IA, IL, IN, KS, KY, LA, MA, MD, MI, MO, NC, NJ, NY, OH, PA, TN, VA, VT, WV, WI and WY.

“New customers only. Offer availability varies by state.”

Enter SIBONUS at signup

The code has to go in during registration to activate the offer. Add it later and you do not qualify.

Ten dollars minimum

You need to deposit at least $10 to qualify, even though the qualifying bet itself can be as small as $1.

FanCash expires in seven days

Each credit dies a week after it lands. Stack up bonuses without using them and the early ones burn off before the 10-day run is even finished.

“FanCash bonuses expire after seven days, so use them promptly.”

One playthrough before cashing out

Like most welcome offers, this one carries a rollover requirement. Bonus funds need a 1x playthrough before you can request a withdrawal.

Signing up, step by step

Download the app, enter your name, date of birth and address, verify with a government ID, add the code, deposit $10, then place your first qualifying bet on Broncos-Chiefs.

Credits land within a day

If your qualifying bet loses, the FanCash shows up within 24 hours. Repeat the process each day to keep the streak alive.

Watch the Promos tab

Fanatics adds boosts and offers for existing customers year round. They live in the Promos section of the app, and the calendar changes often.

Know when to stop

Odds move and are subject to change. If gambling is causing problems for you or someone you know, call 1-800-GAMBLER.

The one thing

This is a 10-day drip, not a lump sum: you only reach $1,000 by losing $100 a day for 10 days in a row, and each FanCash credit dies after seven days.

Read the original on SI

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