As Nepal enters another monsoon season, overflowing rivers, landslides and disrupted highways have once again become familiar headlines. Every year, rescue helicopters, collapsed bridges, damaged homes and rising death tolls dominate the news for a few days. But families, farmers, businesses and local governments have to bear the economic burden of the disaster even after floodwaters recede.

To better understand this burden, we analysed major weather-related disasters recorded in the internationally recognised EM-DAT database between 2015 and 2025. Our analysis identified 32 major disasters that resulted in 2,042 deaths, 1,681 injuries and affected more than 5.78 million people. Although deaths and the number of people affected are reported for every disaster, household economic losses often remain unmeasured, leaving disaster management focused largely on recovery, rather than prevention.

Only five of the 32 major weather-related disasters recorded between 2015 and 2025 include any estimate of economic damage, meaning around 84 percent have no reported monetary loss figure. Without reliable loss estimates, it is difficult to demonstrate the true cost of disasters or justify greater investment in prevention. Therefore, improving disaster loss data should be a priority for the National Disaster Risk Reduction and Management Authority (NDRRMA) and other relevant agencies to support more informed investment decisions.

Floods accounted for 53 percent of Nepal’s major weather-related disasters between 2015 and 2025 and caused the highest number of disaster-related deaths. Nearly four out of every five major weather disasters (78 percent) occurred during the monsoon season, between June and September. This reflects Nepal’s steep terrain, fragile geology and intense monsoon rainfall. Because preparedness has a narrow window, it must begin well before the monsoon arrives, and not after rivers start overflowing. Flood risk reduction should therefore be a central priority in disaster planning, with greater investment in preparedness, early warning systems and resilient infrastructure to reduce future losses.

Because floods account for most major weather disasters, understanding their economic consequences is especially important. Since these losses are poorly measured, it is worth looking closely at what households actually lose. For many rural families, the economic impact of disasters begins even before homes or infrastructure are damaged. Agriculture remains the primary source of livelihood for more than 60 percent of Nepal’s workforce, so when floods or landslides disrupt farming, households lose both immediate income and future harvests.

According to 2024 wage data from Rastriya Shramik Mahasangh Nepal, female agricultural labourers earn an average of Rs553.9 per day and male labourers Rs626.1 per day, meaning a month without work can result in income losses of approximately Rs16,000 to 19,000 per worker, even before crop losses are considered. Because women already earn less, they are more financially vulnerable to these disruptions, highlighting the need for disaster support measures that reflect such differences rather than adopting a one-size-fits-all approach.

The September 2024 floods illustrate how quickly disaster losses can accumulate. A preliminary government loss and damage assessment found the floods damaged 65,380 hectares of agricultural land, killed nearly 27,000 livestock, and contributed to an estimated Rs46.68 billion in losses across infrastructure, agriculture and other sectors. This reflects a broader national pattern. Nepal’s average annual disaster loss is estimated at Rs2.78 billion, or about 0.08 percent of GDP, but in extreme years losses can reach 2.08 percent of GDP, around 25 times higher than the annual average. This wide variation suggests that a small number of catastrophic disasters account for a disproportionate share of Nepal’s economic losses.

However, these national figures only tell one part of the story and do not fully capture the losses that individuals bear. After the 2015 earthquake, studies estimated that rebuilding a rural house cost an average of Rs681,000, while the government provided a reconstruction grant of only Rs300,000 for a fully damaged home. Families had to cover the remaining Rs381,000 themselves, often through loans that take years to repay or remittances sent home by relatives working abroad, money that could have otherwise gone toward a child’s education or a family’s savings.

This is not a one-time earthquake problem; similar financing gaps reappear after nearly every major flood or landslide, leaving households to absorb much of the recovery cost each time. This can significantly delay recovery, particularly for low-income families with limited financial resources. Government support should therefore be reviewed regularly to keep pace with the real cost of rebuilding, rather than staying fixed for years at a time, so that the financial burden does not fall so heavily on affected households.

The scale of this burden becomes even clearer at the national level. According to research supported by UNDP Nepal, households across Nepal reported Rs415.44 billion in farm and off-farm economic losses over the past five years, an average of roughly Rs83 billion annually. By comparison, the government spent about Rs50 billion per year on disaster response between 2012 and 2020. The difference highlights how much more households absorb than the state invests in prevention. Greater investment in early warning systems, flood risk management and community preparedness could reduce future losses for both families and the government.

The visible damage caused by disasters is often repaired. Roads are rebuilt, bridges restored and schools reopened, but the less visible losses are far harder to recover from. Families lose income, children miss school and debts grow. The evidence shows that investing before disasters occur is more effective than paying for recovery afterwards. According to the UNDRR, every dollar spent on disaster risk reduction can save four to seven dollars in future response and recovery costs. With Nepali households already losing around Rs83 billion to disasters each year, risk reduction should be placed at the centre of disaster management alongside emergency response. Weather disasters are bound to happen. Their financial burden is not.