TSMC reported consolidated revenue of approximately NT$511.86 billion for September 2026 on 8 October 2026, a decrease of 0.6 percent from August and an increase of 54.6 percent from September 2025, according to its monthly revenue report. Revenue for January through September totaled NT$3,898.73 billion, up 41.1 percent.
Adding TSMC’s reported revenue for July, August and September, third-quarter revenue comes to about NT$1,494.2 billion, against about NT$989.9 billion a year earlier, an increase of about 51% on our arithmetic.
Business Pill · COMPARED WITH WHAT?
A one-minute explainer of year-over-year growth: comparing a period with the same period a year earlier. It teaches the general idea only and says nothing about any company in this story.
The key insight: As we read it, the growth is accelerating through the year rather than levelling off. TSMC’s year-to-date growth rate has risen with each monthly report, from 37.0 percent after July to 41.1 percent after September, and the third quarter alone is up about 51% on our arithmetic.
TSMC’s July report put July 2026 revenue at NT$467.58 billion, up 44.7 percent from July 2025. Its August report put August at NT$514.81 billion, up 10.1 percent from July and 53.3 percent from August 2025.
September’s NT$511.86 billion was slightly below August, according to the September report’s table, which lists August at NT$514,806 million and September at NT$511,857 million.
Year-to-date growth has risen with each report: 37.0 percent for January to July, 39.3 percent for January to August, and 41.1 percent for January to September, according to TSMC’s three releases.
TSMC monthly consolidated revenue, NT$ billion, 2025 vs 2026: July 323.2 vs 467.6, August 335.8 vs 514.8, September 331.0 vs 511.9. From TSMC’s monthly revenue reports.TSMC third-quarter revenue, NT$ billion, our sum of its monthly reports: about 989.9 in 2025 and about 1,494.2 in 2026.
How We Built the Quarter
TSMC reports revenue monthly; the third-quarter figure in this article is our sum of its July, August and September revenue of NT$467,580 million, NT$514,806 million and NT$511,857 million.
The year-earlier quarter is the sum of the comparison months in the same reports: NT$323,166 million for July 2025, NT$335,772 million for August 2025 and NT$330,980 million for September 2025.
The Nine Months
TSMC’s August filing lists January-to-August 2025 revenue of NT$2,431,983 million. Adding September 2025’s NT$330,980 million gives about NT$2,763.0 billion for the first nine months of 2025 on our arithmetic, against the NT$3,898.73 billion TSMC reports for 2026.
The July filing also lists June 2026 revenue of NT$442,680 million, so August and September are the two months above NT$500 billion in the period these three reports cover.
The Structural Read
Monthly revenue stepped up in August and held. August was NT$514.81 billion, and September NT$511.86 billion, slightly lower but still the second-highest figure in the three reports.
The comparison base is not moving much. September 2025 revenue was NT$330.98 billion, similar to July and August 2025, so the growth comes from this year’s level, not last year’s dip.
The detail comes later. Monthly reports carry no breakdown by technology, platform or customer, so the share of this revenue tied to AI chips is not in these documents.
TSMC, September 2026 Revenue Report
“Revenue for January through September 2026 totaled NT$3,898.73 billion, an increase of 41.1 percent compared to the same period in 2025.”
Three Implications
A NT$1.49 TRILLION QUARTER TSMC’s three monthly reports add up to about NT$1,494.2 billion for the third quarter, our sum.
GROWTH THAT IS RISING Year-to-date growth went from 37.0 percent to 41.1 percent across the three reports.
DETAIL WITH THE RESULTS The monthly reports give no breakdown by platform or customer.
The framework’s starting point describes 2026 spending by the largest technology groups as “the largest single-year concentrated infrastructure cycle in the history of technology.”
As we read it, TSMC’s revenue is where much of that spending ends up as a supplier’s sales. Its monthly reports do not split AI from other work, so the link is a reading of the cycle, not a figure in these documents.
What Is Not Established
We read TSMC’s September revenue report and its July and August revenue filings. Monthly revenue reports do not break revenue down by technology, platform or customer, and give no profit figures; those come with the quarterly results. We did not contact TSMC.
Business Engineer Framework
The AI Capex Map
A Business Engineer framework mapping who is spending on AI infrastructure, and where the money flows.
TSMC reported September revenue of about NT$511.86 billion, up 54.6 percent from a year earlier. Adding July and August, third-quarter revenue is about NT$1,494.2 billion, up about 51% on our arithmetic, and revenue for the first nine months is up 41.1 percent.
A note on sourcing. We read TSMC’s September 2026 revenue report and its July and August revenue filings with the SEC. Monthly figures are TSMC’s; the third-quarter totals and growth rate are our sums. We did not contact TSMC. Nothing here is a forecast, and nothing here is financial or investment advice.
Gennaro Cuofano is a CRO and tech executive who has worked in AI since late 2015, starting with bringing NLP, natural-language generation, voice and chatbot products to the marketing industry. His background is in law and finance: he holds a Master's degree in Law and an International MBA with an emphasis on corporate finance (LUISS Business School and the University of San Diego, 2012), and worked as a financial analyst at a real-estate investment firm in San Diego and as an assistant controller. His work focuses on business model strategy, business engineering and, more broadly, structural analysis: how companies make money, read from their own filings. He created FourWeekMBA and leads research there and at The Business Engineer, his newsletter on AI and business strategy, with over 95,000 subscribers and more than 1,000 published analyses. His writing has also appeared on Entrepreneur (for example, How to Digitize a Family Business in Europe) and HackerNoon. Find him on LinkedIn and Substack. See how we source.
