PLCC: Personal Loan on Credit Card (Interest Rate, Proc. Fee, and Offering Banks)

[2025]

HDFC (Insta): 11.04-21.96% (Mean 14.96%, offered rate 16.34%) (12-60 months) (+Proc.Fee up to 1299/-, +GST on interest amount for Insta loan, within the limit (upto 80% of total limit), pre-approved, easy to get)
HDFC (Jumbo): 11.04-21.96% (Mean 14.49%, offered rate 15.04%) (12-60 months) (+Proc.Fee 999/-, +No GST on interest amount for Jumbo loan, over the limit, pre-approved, difficult to get) (https://www.hdfcbank.com/personal/borrow/popular-loans/loan-on-credit-card)

Today, I received an offer of HDFC CC Insta loan @ 0.99% pm. However, that was for a 5-year duration only. I took it for one year, which was 1.22% pm (14.64% + GST). Proc. fee 1299/-. Three days back, the processing fee was waived, but the interest rate was higher.

I am not able to figure out whether their back-end system is cleverer than mine or not!