How much rural serious illness assistance can be supplemented is divided into two types according to the specific situation: 1. Minimum living security households: up to 20,000 per year.

2. Non-subsistence allowance households: maximum subsidy of 5,000.

Sources of funds for rural serious illness relief: 1. Government appropriation: The government provides financial support for serious illness relief projects in accordance with the budget and relevant policies; 2. Social donations: individuals, enterprises or charitable organizations provide funds for serious illness relief projects through donations; 3.

Public welfare activities: raise funds needed for serious illness relief through various public welfare activities; 4. Other channels: including international aid, special funds and other possible sources of funds.

To sum up, the amount of subsidies for rural serious illness assistance varies according to the nature of household registration. Households receiving subsistence allowances can receive up to 20,000 yuan in annual assistance, while households without subsistence allowances can receive up to 5,000 yuan.

Legal basis: Article 25 of the "Social Insurance Law of the People's Republic of China" states that the state establishes and improves the basic medical insurance system for urban residents.

The basic medical insurance for urban residents combines individual contributions and government subsidies.

The government subsidizes the required personal contributions for people who enjoy the minimum living security, disabled people who have lost the ability to work, elderly people over 60 years old and minors from low-income families.

Article 26 The treatment standards of basic medical insurance for employees, new rural cooperative medical insurance and basic medical insurance for urban residents shall be implemented in accordance with national regulations.

Article 28 Medical expenses that comply with the basic medical insurance drug catalog, diagnosis and treatment items, medical service facility standards, and emergency and rescue expenses shall be paid from the basic medical insurance fund in accordance with national regulations.