How do banks decide my credit limit?

If you’re earning an annual income of RM36,000 or less, the maximum limit extended to you will not exceed twice your monthly income for every credit card issuer. This guideline does not apply if you are earning more than RM36,000 per annum, so you should consult your credit card issuer in Malaysia to find out how much your credit limit will be. Your credit limit can also be raised if you show good repayment behaviour. You can talk to your credit card issuer about raising your credit limit.