The City of Bijeljina is the second most developed local community in Republika Srpska, and all four sectors of economy are active in this community:
 
1. Primary sector – agriculture, forestry, hunting and fishing:
 
Favourable location at the edge of the Pannonian Basin and almost completely flat terrain enabled the development of agriculture, so the most of economy is based on agriculture, and Semberija is considered a granary of RepublikaSrpska and BaH. The most produced are crops – 80% (wheat, corn, barley), vegetables – 8% (cabbage, for which Semberija is known in the whole of former Yugoslavia, watermelon, cucumber, pepper, tomato...), industrial and roughage – 12% (sugar beet, tobacco, alfalfa...).
 
Farmers in Semberija are turning towards growing vegetables in protected areas, and there is a large, so far unused potential for heating greenhouses using geothermal water. The City Administration encourages the production of healthy food, because the environment is preserved and unpolluted by heavy industry or genetically modified organisms. Livestock production has been intensively developing recently, mostly pig and cattle breeding.
 
2. Secondary sector – industry, mining, civil engineering and manufacturing trades
 
The secondary sector in the City of Bijeljina is developing across several branches:

 
Most common industries in the processing sector:

 
So far, construction in the city has primarily included residential construction, road construction, and production of construction materials.
Construction companies in the area are equipped for civil engineering (infrastructure), residential construction, and hydraulic engineering (water-related infrastructure).
 
The largest number of business entities in Bijeljina operate in wholesale and retail trade, and processing industry.
 
3. Tertiary sector - transportation and telecommunications, trade, tourism, catering, crafts, banking and utilities
 
Geostrategic location of Bijeljina and Semberija allows for a fast development of activities in this sector.
 
The City of Bijeljina, with approximately 115,000 inhabitants attracted the largest regional retail chains that opened well stocked mega markets.In addition, goods of numerous global and domestic brands can be bought, because the manufacturers have their branch offices or distributors in Bijeljina. Beside the competition which offers local customers lower prices compared to other places in RepublikaSrpska and BaH, the possibility to decrease the price of goods by the amount of value added tax (VAT) makes shopping in Bijeljina very affordable for customers from neighbouring countries. Most of them come from Serbia.
 
Agro Trade Centre “Knez Ivo od Semberije” has developed into one of the largest wholesale markets for agricultural products in the north-eastRepublikaSrpska and BaH. This location hosts offices of many companies and branches. Agro Trade Centre is the place for organisation of fairs, and the Agricultural Fair in September is organised every year.
 
Location on the banks of two rivers, spa potential, numerous religious buildings, big investments in the development of ethno-tourism, cultural happenings and entertainment, made tourism one of the carriers of economic development of the City. Additional information about tourist potential of the City of Bijeljina can be found on the web site of the Tourism Organisation of Republika Srpska.