Card issuers typically charge 3–3.75% a month (42–45% a year) on unpaid balances, plus 18% GST on the interest. Paying only the minimum due (about 5%) keeps you in debt for a long time.
FAQ
Is GST charged on credit card interest?
Yes, 18% on interest and fees.
Sources (checked 6 Nov 2026): RBI Master Direction on credit cards; GST on financial services.