No. The 0% rate only applies to standard credit card purchases. Other transactions attract interest and could negate the savings you make on the promotional purchase rate. You should try to avoid using the credit card for cash advances, including ATM withdrawals, buying foreign currency and using you credit card for gambling. Relatively high interest rates are applied to these types of transaction, and they start accruing interest immediately. Once again, it is important to check the terms and conditions to familiarise yourself with exactly what payments are included in the introductory rate, what transactions are exempt and the relevant interest rates.