The Government of Ho Chi Minh City (HCMC) has proposed extending the city’s metro system beyond its original scope to include Ba Ria – Vung Tau and Tay Ninh, in addition to the already planned connections to Binh Duong and Dong Nai in Vietnam. This proposal is part of a broader vision to support the regional integration process and urban expansion strategy, especially as the city plans future mergers with neighbouring provinces.

Currently, the inter-provincial Suoi Tien–Binh Duong metro extension is under study, with a projected 32.4 km line expected to begin construction in 2027. A similar extension to Trang Bom in Dong Nai is also being explored. Chairman Duoc stressed the importance of combining state budget, ODA funds, and private investment to meet the financing demands. 

Looking ahead, HCMC plans to build seven metro lines totalling 355 km by 2035 and expand the network to 510 km by 2045. After the opening of Metro Line 1 later this year, Line 2 (Ben Thanh–Tham Luong) is scheduled to break ground in December 2025, further linking the central district with northwestern suburbs.