The average budget of Batu City residents for purchasing tubers is Rp2,422.56 per capita per week.

The average expenditure of residents in Batu City for purchasing tubers in 2023 was Rp2,422.56 per capita per week. This figure surged compared to the previous year's expenditure, which was recorded at Rp2,084.46 per capita per week.

The five largest expenditures of residents for tubers in Batu City, from highest to lowest, were: potatoes at Rp1,295.85 per capita per week; cassava at Rp541.25 per capita per week; sweet potatoes at Rp421.61 per capita per week; taro at Rp115.08 per capita per week; and the lowest expenditure was for sago (not from cassava) at Rp2.18 per capita per week.

Average per capita expenditure is the cost incurred for the consumption of all household members over a month, including purchases, gifts, and self-produced goods, divided by the number of household members. Household consumption is categorized into food and non-food consumption, regardless of the origin of goods, and is limited to household needs only, excluding consumption/expenditure for business purposes or given to others.

Expenditure for food consumption is calculated weekly, while non-food consumption is calculated monthly and for the past 12 months. Both food and non-food consumption are then converted into average monthly expenditure. The average per capita consumption/expenditure figures presented in BPS publications are obtained by dividing the total consumption of all households (both consuming food and not) by the total population.

According to the Central Bureau of Statistics (BPS) publication, the average per capita expenditure in this city reached Rp1.79 million per capita per month in March 2023. This figure increased by 25.4% compared to March 2022, which was Rp1.42 million per capita per month.

Based on region, the highest expenditure for purchasing tubers was in Lanny Jaya Regency and the lowest in Rote Ndao Regency. Batu City's expenditure for purchasing tubers ranked 103rd. Meanwhile, the national average per capita expenditure for purchasing tubers is Rp257.5 per capita per week.