The Y Combinator and Peak XV Partners-backed company is seeking to raise up to Rs 6,000 crore through the IPO, sources said, adding that the final issue size and timing of launch will depend on market conditions. Razorpay declined to comment. The company was last valued at $7.5 billion. Razorpay, which rivals players such as Cashfree Payments and PayU in India, shifted its domicile from the US to the country in May last year.