Saturday's powerful quake devastated much of the capital Kathmandu and killed more than 3,200 people in Nepal's deadliest disaster for more than 80 years.
Racked by political instability since a deadly war with Maoist rebels ended in 2006, earthquake-prone Nepal must now cope with the added burden of a massive rebuilding effort that its shattered economy will not be able to afford on its own.
"The Nepal earthquake has had a devastating impact on the economy of Nepal, which is a very poor nation and has extremely limited capacity to finance relief efforts and reconstruction from their own resources," said Rajiv Biswas, Asia-Pacific chief economist at business research firm IHS.
"Massive international disaster relief and rescue efforts will be needed urgently, as well as large-scale international financial and technical assistance for long-term reconstruction of the economy," Biswas said.
More From This Section
Nepal has an annual per capita GDP of only USD 1,000 per person, according to IHS, with many families living in poverty -- relying on agriculture and increasingly tourism to make ends meet.
Agriculture is the economy's biggest sector, employing over 70 percent of the population and contributing 33 per cent of GDP, according to the trading economics website.
Asian Development Bank official Hun Kim estimated that 40 per cent of the country was affected.
"On a personal level, people have lost their houses and assets. The government will have to quantify the loss of infrastructure," Kathmandu-based economist Bishamber Pyakurel told AFP, describing the impact on the economy as "grave".
"The growth rate of the country will be hit. Agriculture contributes over 30 percent of our GDP and with 36 districts affected, it is unlikely that our growth projections will be met. Difficult times are ahead," Pyakurel said.