IBM — Q3 2026 Financial Report Analysis

Growth came back after a lost June, but most of the profit jump is a tax comparison

IBM's revenue rose 4.7% to $17.10 billion in the three months to 30 September 2026 (6% in constant currency, which strips out exchange-rate moves), up from just 1.1% growth in the second quarter. The recovery was led by Software (+8.2%) and by a return to growth in Infrastructure (+4.2%), the hardware segment that had fallen 7.4% in the June quarter when large mainframe deals failed to close. Net income rose 25.6% to $2.19 billion, but that headline overstates how much the business improved: pre-tax income rose only 2.8%, and most of the rest came from a one-off tax charge in last year's third quarter that did not repeat. IBM held its full-year revenue outlook and raised its free-cash-flow target.

This analysis is based on the earnings release (Exhibit 99.1 of the Form 8-K filed 21 October 2026). IBM's full Form 10-Q for the quarter has not been filed yet, so management's detailed explanations, Software annual recurring revenue, Consulting signings and the regional breakdown are not available yet.

The numbers

IBM's income statement has no operating-income line: interest and other income sit in one combined expense total. Pre-tax margin, the share of revenue left after all costs except income tax, is the closest equivalent and is what the summary strip calls "operating margin", as in our Q2 report. Total diluted EPS including a $0.01 loss from discontinued operations was $2.30.

Where the profit growth really came from

Revenue growth did not turn into much extra profit before tax. Gross profit rose 3.8%, slower than revenue, because gross margin slipped 0.5 points to 56.8%. Gross margin fell in every segment: Software 82.5% from 83.1%, Consulting 27.4% from 29.3%, Infrastructure 56.7% from 57.2%. The release does not say why; the 10-Q should.

Below gross profit, IBM kept doing what it did in Q2: spending more on research and less on overhead. Research and development rose 14.2% to $2,378 million while selling, general and administrative expense fell 2.7% to $4,620 million. Two smaller lines worked against the result. Income from licensing intellectual property fell to $164 million from $219 million, and other income fell to $109 million from $173 million, partly because non-operating pension costs rose to $91 million from $13 million. Interest expense was flat at $491 million despite higher debt. The net effect: pre-tax income up only $67 million.

The jump in net income is a tax story. The tax provision fell to $298 million from $686 million. IBM's own reconciliation shows that last year's figure included a $309 million charge it labels "tax reform impacts", worth $0.33 a share. Without it, last year's income from continuing operations would have been about $2,053 million, and this year's $2,199 million is roughly 7% higher, not 26%. That 7% is the better measure of how the quarter went.

What the headline numbers hide

• GAAP vs adjusted. IBM's "operating" (non-GAAP) EPS of $2.95 excludes $707 million of pre-tax acquisition-related charges (mostly amortisation, the gradual write-off of intangible assets it bought, such as customer lists and technology), up 19.8% from $590 million, plus $91 million of non-operating pension costs. The acquisition charges keep rising because of Confluent, the data-streaming company bought in Q1 2026 for about $11.6 billion. Confluent also drives much of the growth in the Data business (+19%), so the adjusted figure counts the revenue from the purchase but not its cost.
• Adjusted EPS growth also got help from tax. Operating pre-tax income rose 8.6%, while operating net income rose 11.7%, because IBM's adjusted tax rate fell to 14.7% from 17.0%. About three points of the 11% adjusted EPS growth came from a lower tax rate rather than from the business.
• No help from buybacks. IBM is not buying back stock (the only repurchases are shares withheld for employee taxes). The diluted share count rose 0.5% to 953.5 million, which slightly reduced EPS growth.
• Cash conversion was strong. Free cash flow of $3.03 billion was 1.38 times net income in the quarter, and $7.79 billion year to date was 1.40 times. Part of that gap is non-cash costs: amortisation ($828 million) and stock-based compensation ($535 million, up 20.5%), which is a real cost to shareholders even though no cash leaves the company.
• Inventory has grown fast. Inventories reached $1,945 million, up 59% from $1,220 million at the end of 2025, much faster than Infrastructure revenue (+2.7% year to date). That could be stock built for Power and Storage orders or acquired with a business. The release doesn't say which; it is the one balance-sheet line worth checking in the 10-Q.
• Guidance went up, not down. Revenue guidance held at 4–5% constant-currency growth, and free-cash-flow guidance rose from about $1 billion of growth to more than $1 billion. After Q2's cut, this is the first time this year the outlook improved.

Segments

Software: $7,804M, +8.2% (+9% cc). Segment profit $2,734M, +15.2%; margin 35.0%, up 2.1 points. This was the best part of the quarter. Hybrid Cloud (Red Hat) grew 11%, Data grew 19% (largely Confluent), and Transaction Processing, the software that runs on IBM's mainframes, rose 9% after falling 8.1% in Q2. Automation fell 3%, down from +3.6% last quarter. It is the only Software business that shrank, and the release gives no reason.

Consulting: $5,335M, flat (+2% cc). Segment profit $653M, −4.8%; margin 12.2%, down 0.7 points. This undoes Q2, when Consulting profit rose 15% on flat revenue. Gross margin fell 1.9 points to 27.4%. Strategy and Technology grew 2% (4% cc), while Intelligent Operations, the outsourced-operations business, fell 2%. Revenue has now been roughly flat for two quarters while Software has accelerated.

Infrastructure: $3,707M, +4.2% (+5% cc). Segment profit $715M, +11.0%; margin 19.3%, up 1.2 points. IBM Z mainframe revenue fell 20%, a much smaller decline than Q2's 42%. Distributed Infrastructure (Power servers and Storage) grew 31%, after 37% in Q2. The mainframe comparison is still hard because the z17 launched in June 2025, so last year's Q3 was an early, strong quarter of that cycle. Infrastructure Support fell 3%.

Financing: $192M, −3.9%. Small, with a lower gross margin (40.7% from 45.6%).

Did last time's read hold up?

Our Q2 report said the main question for the second half was whether the mainframe deals that slipped out of June would close or were lost. It also flagged that free cash flow was flat after six months while IBM still promised a $1 billion increase for the year. Both have moved IBM's way. The release doesn't say how many of the slipped deals closed. But mainframe software swung from −8.1% to +9%, IBM Z's decline narrowed from 42% to 20%, and total growth went from 1.1% to 4.7%. That fits deals arriving late rather than being lost. On cash, year-to-date free cash flow is now up about $0.6 billion and the target was raised, so less is left for Q4. The view that the June shortfall was timing, not a broken franchise, looks right so far. Mainframe hardware is still shrinking, though, and the 10-Q's commentary will say how much of the slipped business has come back.

Takeaway: The quarter fixed the problem Q2 created: mainframe software grew again, revenue growth more than quadrupled, and cash generation improved enough for IBM to raise its free-cash-flow target. But the 25.6% net income rise is mostly last year's $309 million tax charge dropping out; underlying profit grew about 7%, with Software carrying the result while Consulting margins slipped.

Cash, debt and the balance sheet

Operating cash flow was $4.03 billion, up $0.9 billion. Free cash flow, which removes capital spending and changes in the loans IBM makes to customers buying its equipment, was $3.03 billion, up $0.65 billion. Year to date, free cash flow is $7.79 billion against $7.18 billion a year ago. IBM paid $1.60 billion in dividends in the quarter, about 53% of free cash flow, and declared a quarterly dividend of $1.69 per share.

Cash, restricted cash and marketable securities ended at $11.1 billion, up from $8.2 billion at the end of June but down $3.4 billion from year-end 2025. IBM has spent $11.4 billion on acquisitions this year, about $0.9 billion of it in Q3. Debt rose to $63.8 billion (including $12.7 billion of IBM Financing debt), up $1.8 billion in the quarter after IBM raised about $2.0 billion of new debt. A $575 million inflow from transactions with minority shareholders lifted noncontrolling interests to $669 million from $93 million at year-end. The release doesn't explain this; the 10-Q should.

Outlook

IBM still expects full-year revenue growth of 4–5% in constant currency, with currency neutral to growth. Reported revenue is up 4.9% after nine months, so the range doesn't need a stronger fourth quarter. Free cash flow is now expected to rise by more than $1 billion for the year. With about $0.6 billion of that achieved, Q4 free cash flow needs to beat last year's Q4 by more than $0.4 billion. Q3 beat its year-ago quarter by $0.65 billion, so that looks achievable.

Our view: the mix is moving the right way. Software, IBM's highest-margin segment, grew 8% and lifted its profit margin by two points, and Software is now about 46% of revenue. Three things to watch next quarter. First, whether Consulting margins keep falling, since that would offset the Software gains. Second, whether the 59% build in inventory turns into Infrastructure revenue. Third, how much of GAAP growth keeps going to acquisition amortisation as the Confluent deal and this year's other purchases are absorbed. The year-ago tax charge won't help any more, so next quarter's GAAP growth will show the business without it.

All figures from Exhibit 99.1 of IBM's Form 8-K filed 21 October 2026 (unaudited). Operating (non-GAAP) figures are IBM's own measures, excluding acquisition-related charges, non-operating retirement costs and tax reform impacts. Q2 comparisons are from our Q2 2026 analysis of IBM's 10-Q.