A primary credit card is issued directly to the main applicant, who is fully and solely responsible for the account and all charges on it. A supplementary card is issued to a family member, typically a spouse or adult child, under the primary cardholder's account, sharing the same credit limit, but with the primary cardholder remaining legally and financially responsible for all charges made on both cards, including any spending the supplementary holder makes independently.
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Frequently Asked Questions
Does a supplementary cardholder build their own credit history?
Generally no - since the account and liability sit with the primary cardholder, the supplementary card's activity typically doesn't build an independent credit file for the supplementary holder.
Is there usually a separate fee for a supplementary card?
Some banks charge a smaller additional annual fee for a supplementary card, while others include it free with certain primary card products.
Can a supplementary cardholder have their own spending limit?
Many banks allow the primary holder to set a specific, lower spending limit for a supplementary card within the overall account limit.
Who is responsible if the supplementary cardholder misses payments?
The primary cardholder remains fully responsible for the full account balance and repayment, regardless of which cardholder made the specific charges.
How can I compare cards that offer supplementary card options?
Use the credit card finder and check which cards include supplementary card features that suit your family's needs.