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If I own 2 separate corporations can I get 2 AMEX Gold Charge cards and have the sign-up bonus twice?
Also, if I opt for a Plum card, can I downgrade that to Gold?
If your personal credit is good then yes its possible since they are two separate legal entities though you may want to review the card agreement to see if there is any restrictions on a bonus.
So you can apply for mulitple cards if you have 2 brand new businesses?