When does Citi send out Costco CashBack Reward Checks?

Citi bank will send you a Costco credit card reward certificate in February billing statements.

• This cash reward certificate can be redeemable for cash or merchandise at US Costco Warehouses.
• This certificate will expire on Dec 31st of the year issued.
• 2017 Costco Anywhere Visa Card by Citi rewards will include your 2016 rewards balance from your Costco card from American Express.

Rewards Details: 

4% cash back on eligible gas worldwide, including gas at costco, for the first $7,000 per year and then 1% thereafter
3% cash back on restaurant and eligible travel purchases worldwide
2% cash back on all other purchases from costco and costco.com
1% cash back on all otherpurchases

see the benefits: Costco Visa Card by Citi