Aviation IndiGo, HDFC Bank tie up to launch credit card. Check eligibility, key features Updated : February 28, 2020 03:29 PM IST Salaried individuals who fall in the age bracket of 21-60 years and have a monthly income of at least Rs 20,000 will be eligible to get this card. Self-employed customers who fall in the age group of 21-65 years and file an ITR of more than Rs 6 lakh per annum will be eligible to avail the 'Ka-Ching' card. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.