Updated: October 2026 | 6 min read

Executive Summary

E-commerce in 2026 is still growing, but the cleanest story is not a speculative global forecast. The best supported numbers come from the U.S. Census Bureau, Adobe Analytics, and company investor reporting. In its report released August 18, 2026, the Census Bureau estimated that U.S. retail e-commerce sales reached USD 340.2 billion in the second quarter of 2026 on a seasonally adjusted basis. That was a 3.8% increase from the first quarter of 2026 and a 12.2% increase from the second quarter of 2025. E-commerce accounted for 17.1% of total U.S. retail sales in the second quarter of 2026. Census also revised its first-quarter 2026 estimate upward, to USD 327.9 billion, or 17.0% of total retail sales.

Consumer behavior also shows that digital shopping is not limited to desktop checkout. Adobe reported that U.S. consumers spent USD 257.8 billion online during the 2025 holiday season, covering November 1 through December 31. That was up 6.8% year over year, with 25 days above USD 4 billion in online spend. Adobe also reported that smartphones drove 56.4% of online transactions during that holiday period. On the platform side, Shopify reported USD 115.567 billion in GMV for the second quarter of 2026, up from USD 87.837 billion in the second quarter of 2025. These figures describe measured online retail growth, mobile-first buying, and commerce platform scale without treating 2027 forecasts as facts.

Quick Overview

  • U.S. retail e-commerce sales were USD 340.2 billion in the second quarter of 2026, seasonally adjusted.
  • Quarterly U.S. e-commerce sales increased 3.8% from the first quarter of 2026.
  • U.S. e-commerce sales increased 12.2% from the second quarter of 2025.
  • E-commerce accounted for 17.1% of total U.S. retail sales in the second quarter of 2026.
  • Adobe measured USD 257.8 billion in U.S. online holiday spending from November 1 to December 31, 2025.
  • Shopify reported USD 115.567 billion in GMV for the second quarter of 2026.

Key Takeaways

  • The strongest 2026 e-commerce claims should be based on reported sales, not market-size forecasts.
  • U.S. online retail penetration is meaningful, but physical retail still represents most total retail sales.
  • Mobile shopping is now central to holiday e-commerce behavior, according to Adobe’s transaction data.
  • Platform GMV shows how much commerce infrastructure is moving through merchant software ecosystems.

What the 2026 e-commerce numbers actually show

The most reliable 2026 e-commerce statistic is the Census Bureau’s quarterly estimate. In the second quarter of 2026, U.S. retail e-commerce sales were USD 340.2 billion after seasonal adjustment, while total retail sales were USD 1,986.5 billion. E-commerce represented 17.1% of total retail sales for the quarter. That share is large enough to make online operations a core retail channel, but it also keeps the analysis grounded: most U.S. retail sales still happen outside the e-commerce line item.

The growth rate is still notable. Census reported that second-quarter 2026 e-commerce sales rose 3.8% from the first quarter of 2026 and 12.2% from the second quarter of 2025. Total retail sales grew more slowly over the same year-over-year comparison, at 6.7%. That gap supports a measured conclusion: online sales continue to expand faster than total retail, but the pace is steady rather than explosive. For operators, the practical takeaway is that digital merchandising, checkout reliability, product content, fulfillment communication, and returns handling remain important because online revenue is still taking share.

Holiday data shows how concentrated online demand can become. Adobe reported USD 257.8 billion in U.S. online spending from November 1 through December 31, 2025, up 6.8% year over year. The same report said 25 days exceeded USD 4 billion in online spend. Cyber Week generated USD 44.2 billion, Cyber Monday reached USD 14.25 billion, and Black Friday reached USD 11.8 billion. These figures should be used as actual holiday-season measurements, not as a forecast for every month of 2026. They are especially useful for explaining why retail teams plan traffic, inventory, payment capacity, promotions, and customer service staffing around seasonal peaks.

Mobile behavior is another supported trend. Adobe reported that smartphones drove 56.4% of online transactions during the 2025 holiday period, compared with 54.5% in 2024. Christmas Day was even more mobile-heavy, with smartphones driving 66.5% of online sales. The practical point is straightforward: a 2026 e-commerce strategy that treats mobile checkout as secondary is behind actual consumer behavior. It simply means that mobile page speed, product filters, wallet support, address entry, fraud checks, and post-purchase messaging deserve careful attention.

Platform reporting adds a merchant-infrastructure view. Shopify’s second-quarter 2026 results reported GMV of USD 115.567 billion, compared with USD 87.837 billion in the second quarter of 2025, and quarterly revenue of USD 3.583 billion, up 34% year over year. Those numbers do not represent the entire e-commerce market, but they show that a large amount of merchant activity now runs through commerce software, payments, storefront tools, and related services. For readers, this is a reminder to separate platform GMV from retailer revenue and from net revenue retained by the software provider.

Methodology and limitations

This article prioritizes direct public sources: the U.S. Census Bureau for quarterly retail e-commerce estimates (second-quarter 2026 report released August 18, 2026), Adobe for observed U.S. online holiday transaction data, and Shopify investor reporting for platform GMV (second-quarter 2026 results released August 5, 2026). Figures are the latest available public data, reviewed on October 24, 2026. The Census Bureau’s next quarterly release, which adds third-quarter 2026 estimates and further revisions, is scheduled for November 19, 2026. The article does not estimate global e-commerce market size, does not claim 2027 results, and does not treat one platform’s merchant volume as a proxy for all online retail.