Global B2B Payment Market Overview: B2B Payment Market Size was estimated at 6.95 (USD Billion) in 2024. The B2B Payment Market Industry is expected to grow from 8.41 (USD Billion) in 2025 to 29.69 (USD Billion) till 2034, exhibiting a compound annual growth rate (CAGR) of 15.62% during the forecast period (2025 - 2034).