Tax citizen of the country, using income-tax (part of people’s earning) VAT (extra money paid when buying things or services), property tax(people with land and houses pay).
Trade, industry and investment, brings money from overseas, e.g. a multinational company could build a factory, goods can be exported, customs can be charged.
Aid can be asked from other countries, but its used may be controlled by the donor country.
In Nepal planned development began with the implementation of the first 5-year plan in 2013 BS.