Indian payment gateway services provider Razorpay Software has confidentially filed draft papers for an initial public offering, a newspaper advertisement showed on Monday. The confidential route allows ‌IPO-bound ⁠firms to ⁠keep their filings private until the launch of the public issue. Financial news publication Moneycontrol on Sunday reported that the proposed issue is expected to raise over $500-$600 million, while The ⁠Economic Times ‌in April said that the confidential IPO filing was for ⁠a $600-700 million issue, with the valuation pegged at $5 billion-6 billion. Razorpay, backed by investors such as GIC, Y Combinator and Lightspeed, provides technology that enables businesses to accept online payments from customers. It also ‌helps protect customers' sensitive information, reduces payment failures, and simplifies settlement of funds. The ⁠platform processes transactions through methods including credit and debit cards, UPI, net banking, buy now and pay later options and digital wallets. It earns revenue by charging a fee on transactions.