My relationship bonus was posted in October 2016 statement, a few days earlier than my exact anniversary date.

I did the calculation myself (shame on Citi for not providing spending breakdown/total in any customized period, learn from Amex!), the best guess is it is calculated using raw spending from October 2015 statement to October 2016 (13 statements), minus $350.00. The raw spending does NOT include $350.00 annual fees, but does include $250.00 air reimbursement, as well as $200+ 4th hotel night reimbursement (which were both considered payment not credit in corresponding statements, so they did not deduct TYP).

A couple points that puzzle me:

• All $3000+ transactions in October 2015 statement were spent/posted before my anniversary date in 2015, so was the October 2015 statement date. They were also before 10/18/2015 when the relationship bonus formula changed. Why should they be included in calculating relationship bonus for 2015-2016?
  
• $350 annual fee was NOT calculated in raw spending. Why do I need to subtract $350 again for calculating base spending in relationship bonus? My best guess is $350 is composed of $250 air reimbursement and $100 annual fee discount. Anyone can confirm?