The reduced rates will apply for existing customers as well as new ones.
For customers who already have a Low Rate credit card, any interest charged on statements issued from July onwards will be applied at these new interest rates, Kiwibank said.
Kiwibank will also enter a new, exclusive partnership with Visa to provide both its credit and debit cards.
"We believe that teaming up with Visa will allow us to deliver better innovation to Kiwis in the future," Wilkshire said.
Where have the rates moved from?
• Low Rate purchase interest rate from 13.45% p.a. to 9.95% p.a.
• Low Rate cash interest rate from 22.95% p.a. to 9.95% p.a.
• Zero purchase interest rate from 16.90% p.a.to 13.95% p.a.
• Zero cash interest rate from 22.95% p.a. to 13.95% p.a.
• Gold purchase interest rate from 17.90% p.a. to 13.95% p.a.
• Gold cash interest rate from 22.95% p.a. to 13.95% p.a.