New Delhi, July 2 -- Several banks have devalued their credit cards by cutting reward points, restricting lounge access and revising cashback benefits, prompting cardholders to wonder how many credit cards they should actually have to maximise benefits.

Most recently HDFC Bank capped the accelerated reward points earned through SmartBuy brand vouchers to a monthly limit of 3,000 points for premium credit cards like Infinia, Diners Black and Regalia.

While multiple cards can help you earn better rewards across different spending categories, they can also make it harder to manage payments and spending if not used responsibly. Here's what you need to know about finding the right balance.

According to three experts who spoke to Mint, there...