Here are some of the cheapest countries to live and work as a digital nomad:

Vietnam - Vietnam is one of the most affordable countries in Southeast Asia for digital nomads. Living in cities like Ho Chi Minh City or Hanoi can be as low as $600-$1000 monthly for a decent lifestyle, including rent, food, and entertainment.
India - With its meager cost of living, India is a very budget-friendly option. You can get by for $500-$800 monthly in cities like Goa, Bangalore, or Pune.
Indonesia - Outside of Bali, Indonesia is relatively cheap. Cities like Yogyakarta or Canggu offer a monthly low-cost lifestyle from $600-$1000.
Thailand - Especially once you get away from Bangkok, Thailand has very affordable prices. $800-$1200 can cover costs in cities like Chiang Mai.
Cambodia - As one of the cheapest countries in Southeast Asia, you can easily live in Cambodia for $600-$900 per month.
Philippines - Many digital nomads flock to the Philippines for the low living costs of $700-$1200 per month outside of Manila.
Mexico - With warm weather and a vast digital nomad community, Mexico is budget-friendly at $1000-$1500 monthly.
Colombia - An emerging hotspot, Colombia offers an affordable lifestyle from $800-$1200 per month in cities like Medellin.
Morocco - In cities like Marrakesh, you can get by as a digital nomad in Morocco for just $600-$1000 per month.
Nepal - Nepal can cost as little as $500-$800 per month for a fundamental but comfortable lifestyle.
Costs can vary substantially based on your accommodation, city, and lifestyle. However, these countries offer some of the lowest living expenses for digital nomads.