Update your card on file
How to change your card on file for Kindle Unlimited
By the Pikt editorial teamLast updated
Kindle Unlimited renews monthly on your Amazon account. It can sit on a different card than Prime. You keep every card you carry — this just makes sure Kindle Unlimited renews on the one likely to earn the most.
Where to update it
In your Kindle Unlimited account: Amazon → Kindle Unlimited Central → Payment settings.
Step by step
Sign in at amazon.com and open Kindle Unlimited Central.
Choose Edit payment method.
Select the card Pikt suggests for this bill, or add it.
Save. The change applies on your next renewal.