FlyerTalk Forums - View Single Post - Give a supplementary card to a stranger?
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Old Feb 1, 2012 | 6:38 pm
  #40  
makemoretospendmore
10 Years on Site
 
Join Date: May 2011
Location: Closer to YKZ than YYZ
Programs: AC*75K, Amex Centurion, Marriott Platinum Elite, All Accor Diamond, Hilton Diamond
Posts: 269
I do not believe being a supplementary card holder will get you any credit history. I had an arrangement with my sister where she was the primary card holder. She spent nothing, while I spent about 15K a month. It gave me no credit history at all but improved hers. This was using a US-based SPG Amex.
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