The latest round of funding could be announced in the next few weeks, according to sources.
The new round would value the city-based eCommerce platform at about USD 4-5 billion, they said.
Snapdeal has, so far, raised more than USD 1 billion, from investors including Japanese telecom giant Softbank (USD 627 million or Rs 3,762 crore) and former Tata Group Chairman Ratan Tata (personal investment).
When contacted, a Snapdeal spokesperson said: "This is a speculation and as a policy we do not comment on speculations".
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Earlier this year, talks between Alibaba and Snapdeal to raise a similar amount had fallen apart due to high valuations being sought by the homegrown online marketplace.
PE firms and angel investors are aggressively funding start ups and Internet-led businesses in India, targeting higher returns in the years to come.
Rivals Flipkart and Amazon have also committed to invest about USD 8 billion over the next few years in India, where eCommerce is growing at a blazing pace, driven by affordable smartphones and increasing Internet penetration.