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EMARKETER

B2B Ecommerce Forecast 2026

Marketplace Momentum and Operations Gaps Reshape Growth

Report by Kelsey Voss  |  Jan 29, 2026
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Table of Contents
Executive Summary
B2B ecommerce sales continue to grow as digital purchasing becomes the norm
B2B buyers are shifting more of their purchasing to ecommerce
Marketplaces will drive ecommerce growth
Recommendations for brands and solution providers
Sources
Media Gallery
About This Report
US B2B ecommerce continues to expand as it becomes a default buying channel. But slower growth, operational gaps, and marketplace momentum are reshaping where value is created and how sellers compete.
Topics
B2B Marketing
B2B Sales
Ecommerce Sales
United States
Table of Contents
Executive Summary
B2B ecommerce sales continue to grow as digital purchasing becomes the norm
B2B buyers are shifting more of their purchasing to ecommerce
Marketplaces will drive ecommerce growth
Recommendations for brands and solution providers
Sources
Media Gallery

This report examines US B2B ecommerce growth as digital buying becomes routine. Sales keep rising, but growth is slowing. Operational constraints and marketplace-led expansion are forcing sellers to rethink data, workflows, and channel strategy.

Key Question: What forces will determine the pace and composition of US B2B ecommerce growth through the forecast period?

Key Stat: US B2B ecommerce site sales will rise steadily through the forecast period, surpassing $3.100 trillion by 2029.

B2B Ecommerce Site Sales Will Surpass $3 Trillion by 2028, as Growth Moderates, (trillions in US B2B ecommerce site sales and % change, 2025-2029 (redacted))
E-Mail ChartDownload

authors

Kelsey Voss

Contributors

Eleni Digalaki
Nikolai Dineros
Delfina Huergo Bensadon
Penelope Lin
Director, Data Visualization
Heather Sprung
Senior Editor
Matt Torpey
Senior Chart Editor
Paul Verna
VP, Content
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