No interest is charged. According to the relevant information of Jingdong refueling package installment, we learned that Jingdong refueling package installment does not charge interest in addition to the installment handling fee. There is no installment interest for Jingdong credit card after installment, but a handling fee will be charged. After choosing the credit card installment payment method on JD.com, you can choose to pay in 3, 6, or 12 installments. However, the installment payment only charges handling fees and no interest. The rate of handling fees varies according to the number of installments.