Revenue growth decelerated sharply to -10.1% YoY in 2026Q2, while operating margin volatility, ranging from 5.3% to 13.6% over the past year, signals profound earnings instability and a lack of predictable, regulated returns.
KT Corporation (KT) annual income statement — 28-year revenue, gross profit & net income history
| Metric | TTM | Dec'25 | Dec'24 | Dec'23 | Dec'22 | Dec'21 | Dec'20 | Dec'19 | Dec'18 | Dec'17 | Dec'16 | Dec'15 | Dec'14 | Dec'13 | Dec'12 | Dec'11 | Dec'10 | Dec'09 | Dec'08 | Dec'07 | Dec'06 | Dec'05 | Dec'04 | Dec'03 | Dec'02 | Dec'01 | Dec'00 | Dec'99 | Dec'98 |
|---|
| Revenue | 27.44T | 28.25T | 26.38T | 26.29T | 25.64T | 24.9T | 24.1T | 24.64T | 23.22T | 23.26T | 22.8T | 22.21T | 22.36T | 22.82T | 23.86T | 21.31T | 19.99T | 19.64T | 19.59T | 18.66T | 16.94T | 17.02T | 16.49T | 16.85T | 16.39T | 15.95T | 13.54T | 11.75T | 9.92T |
| Revenue Growth % | -0.04% | 7.1% | 0.35% | 2.53% | 2.98% | 3.31% | -2.19% | 6.11% | -0.17% | 2.02% | 2.64% | -0.66% | -2.01% | -4.35% | 11.95% | 6.59% | 1.78% | 0.26% | 5% | 10.18% | -0.51% | 3.25% | -2.15% | 2.79% | 2.77% | 17.83% | 15.21% | 18.5% | - |
| Cost of Revenue | 10.42T | 10.16T | 9.36T | 9.56T | 9.74T | 10.04T | 9.79T | 10.34T | 9.58T | 9.39T | 9.01T | 9.06T | 9.28T | 9.71T | 10.13T | 8.38T | 2.93T | 3.7T | 4.13T | 3.89T | 3.53T | 3.23T | 3.29T | 1.75T | 11.69T | 12.24T | 7.13T | 6.58T | 5.44T |
| Gross Profit | 17.01T | 18.1T | 17.02T | 16.72T | 15.9T | 14.86T | 14.31T | 14.3T | 13.64T | 13.87T | 13.79T | 13.15T | 13.08T | 13.1T | 13.73T | 12.93T | 17.06T | 15.94T | 15.46T | 14.77T | 13.4T | 13.79T | 13.2T | 15.11T | 4.71T | 3.71T | 6.41T | 5.17T | 4.47T |
| Gross Margin % | 62.01% | 64.05% | 64.5% | 63.62% | 62.01% | 59.68% | 59.38% | 58.02% | 58.72% | 59.63% | 60.5% | 59.22% | 58.49% | 57.43% | 57.54% | 60.66% | 85.33% | 81.16% | 78.92% | 79.16% | 79.15% | 81.03% | 80.03% | 89.64% | 28.71% | 23.29% | 47.34% | 44.01% | 45.09% |
| Gross Profit Growth % | - | 6.35% | 1.74% | 5.19% | 7% | 3.83% | 0.1% | 4.85% | -1.68% | 0.55% | 4.87% | 0.57% | -0.2% | -4.53% | 6.17% | -24.22% | 7% | 3.11% | 4.68% | 10.19% | -2.82% | 4.53% | -12.65% | 220.94% | 26.7% | -42.03% | 23.92% | 15.67% | - |
| Operating Expenses | 14.99T | 15.5T | 16.14T | 15.04T | 14.11T | 13.16T | 13.29T | 13.27T | 12.53T | 12.8T | 12.41T | 12.08T | 13.86T | 12.87T | 12.05T | 10.94T | 15.05T | 14.97T | 14.02T | 13.03T | 11.14T | 11.38T | 10.8T | 13.19T | 2.37T | 1.77T | 5.36T | 4.41T | 3.89T |
| Other Operating Expenses | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| EBITDA | 4.95T | 6.53T | 4.8T | 5.56T | 5.51T | 5.35T | 4.69T | 4.69T | 4.47T | 4.51T | 4.8T | 4.72T | 3.08T | 3.86T | 4.99T | 4.98T | 5.25T | 4.33T | 5.14T | 5.4T | 5.72T | 6.02T | 6.06T | 5.85T | 6.13T | 5.96T | 4.52T | 3.59T | 3.68T |
| EBITDA Margin % | 18.03% | 23.11% | 18.21% | 21.14% | 21.47% | 21.47% | 19.46% | 19.03% | 19.23% | 19.38% | 21.07% | 21.24% | 13.76% | 16.9% | 20.93% | 23.39% | 26.24% | 22.05% | 26.25% | 28.95% | 33.78% | 35.38% | 36.78% | 34.73% | 37.42% | 37.33% | 33.41% | 30.59% | 37.07% |
| EBITDA Growth % | -10.08% | 35.91% | -13.55% | 0.93% | 2.97% | 14% | 0.03% | 4.99% | -0.91% | -6.2% | 1.86% | 53.35% | -20.22% | -22.8% | 0.21% | -5% | 21.1% | -15.77% | -4.8% | -5.56% | -5.02% | -0.69% | 3.64% | -4.62% | 3.02% | 31.66% | 25.86% | -2.22% | - |
| Depreciation & Amortization | 2.93T | 3.94T | 3.93T | 3.87T | 3.71T | 3.65T | 3.67T | 3.66T | 3.36T | 3.44T | 3.42T | 3.64T | 3.85T | 3.62T | 3.31T | 3T | 3.24T | 3.36T | 3.7T | 3.66T | 3.45T | 3.61T | 3.67T | 3.94T | 3.8T | 4.01T | 3.47T | 2.83T | 3.09T |
| D&A / Revenue % | 10.66% | 13.94% | 14.9% | 14.71% | 14.47% | 14.65% | 15.22% | 14.86% | 14.49% | 14.78% | 15.01% | 16.39% | 17.24% | 15.87% | 13.89% | 14.06% | 16.2% | 17.11% | 18.9% | 19.6% | 20.38% | 21.21% | 22.25% | 23.38% | 23.16% | 25.15% | 25.65% | 24.07% | 31.19% |
| Operating Income (EBIT) | 2.02T | 2.59T | 874.44B | 1.69T | 1.79T | 1.7T | 1.02T | 1.03T | 1.1T | 1.07T | 1.38T | 1.08T | -778.84B | 234.59B | 1.68T | 1.99T | 2.01T | 970.55B | 1.44T | 1.75T | 2.27T | 2.41T | 2.4T | 1.91T | 2.34T | 1.94T | 1.05T | 765.23B | 582.84B |
| Operating Margin % | 7.37% | 9.17% | 3.31% | 6.43% | 7% | 6.83% | 4.24% | 4.17% | 4.74% | 4.6% | 6.07% | 4.85% | -3.48% | 1.03% | 7.04% | 9.32% | 10.04% | 4.94% | 7.35% | 9.35% | 13.4% | 14.17% | 14.53% | 11.34% | 14.26% | 12.18% | 7.76% | 6.51% | 5.88% |
| Operating Income Growth % | - | 196.4% | -48.23% | -5.89% | 5.62% | 66.23% | -0.45% | -6.71% | 2.97% | -22.7% | 28.41% | 238.29% | -432.01% | -86.04% | -15.45% | -1% | 106.81% | -32.61% | -17.48% | -23.09% | -5.91% | 0.66% | 25.37% | -18.25% | 20.3% | 84.99% | 37.29% | 31.29% | - |
| Interest Expense | 4M | 366.03B | 281.65M | 274.45M | 293.85B | 263.39B | 263.58B | 238.75M | 296.87B | 302.46B | 337.22B | 385.93B | 829B | 450.3B | 779.8B | 158.8B | 529.36B | 505.89B | 481.63B | 466.46B | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Interest Coverage | - | 7.56x | 3359.44x | 6044.61x | 7.44x | 8.51x | 4.91x | 5421.37x | 4.48x | 3.70x | 4.46x | 2.84x | -0.99x | 0.72x | 2.42x | 13.16x | 4.10x | 2.42x | 2.47x | 4.10x | - | - | - | - | - | - | - | - | - |
| Interest / Revenue % | 0% | 1.3% | 0% | 0% | 1.15% | 1.06% | 1.09% | 0% | 1.28% | 1.3% | 1.48% | 1.74% | 3.71% | 1.97% | 3.27% | 0.75% | 2.65% | 2.58% | 2.46% | 2.5% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% |
| Non-Operating Income | 0 | -1000K | -1000K | -1000K | 1000K | 1000K | 1000K | -1000K | -1000K | -1000K | -1000K | -1000K | -1000K | -1000K | -1000K | -1000K | -1000K | -1000K | -1000K | -1000K | -1000K | -1000K | -1000K | -1000K | 1000K | -1000K | 1000K | -1000K | -1000K |
| Pretax Income | 1.87T | 2.4T | 571.51B | 1.3T | 1.89T | 1.98T | 1.03T | 1.02T | 1.03T | 817B | 1.17T | 710.74B | -1.3T | -113.92B | 1.41T | 1.61T | 1.68T | 719.27B | 707.2B | 1.45T | 1.91T | 1.73T | 1.94T | 1.66T | 2.69T | 1.53T | 1.54T | 428.09B | 290.6B |
| Pretax Margin % | 6.83% | 8.5% | 2.17% | 4.96% | 7.38% | 7.95% | 4.28% | 4.12% | 4.45% | 3.51% | 5.12% | 3.2% | -5.81% | -0.5% | 5.93% | 7.55% | 8.41% | 3.66% | 3.61% | 7.76% | 11.26% | 10.19% | 11.77% | 9.84% | 16.4% | 9.62% | 11.36% | 3.64% | 2.93% |
| Income Tax | 479.85B | 576.82B | 164.84B | 330.44B | 505.76B | 519.02B | 285.35B | 320.06B | 314.56B | 270.66B | 334.91B | 227.13B | -271.44B | 11.89B | 277.87B | 318.46B | 396.11B | 107.76B | 167.86B | 356.8B | 467.4B | 384.3B | 558.24B | 549.16B | 741.28B | 421.81B | 551.2B | 45.98B | 100.24B |
| Effective Tax Rate % | 25.62% | 24.02% | 28.84% | 25.37% | 26.74% | 26.23% | 27.66% | 31.5% | 30.42% | 33.13% | 28.7% | 31.96% | 20.89% | -10.44% | 19.64% | 19.79% | 23.55% | 14.98% | 23.74% | 24.64% | 24.5% | 22.16% | 28.76% | 33.12% | 27.58% | 27.48% | 35.86% | 10.74% | 34.49% |
| Net Income | 1.28T | 1.72T | 459.86B | 993.33B | 1.26T | 1.36T | 700.89B | 645.7B | 645.57B | 461.56B | 745.09B | 546.36B | -1.03T | -189.93B | 1.05T | 1.45T | 1.3T | 494.85B | 513.29B | 1.17T | 1.23T | 1.08T | 1.24T | 861.79B | 1.95T | 1.11T | 986.09B | 1.45T | 190.36B |
| Net Margin % | 4.68% | 6.08% | 1.74% | 3.78% | 4.92% | 5.45% | 2.91% | 2.62% | 2.78% | 1.98% | 3.27% | 2.46% | -4.61% | -0.83% | 4.39% | 6.78% | 6.48% | 2.52% | 2.62% | 6.28% | 7.28% | 6.33% | 7.51% | 5.11% | 11.88% | 6.98% | 7.28% | 12.32% | 1.92% |
| Net Income Growth % | 39.64% | 273.77% | -53.7% | -21.19% | -7.11% | 93.59% | 8.55% | 0.02% | 39.87% | -38.05% | 36.37% | 153.03% | -442.43% | -118.16% | -27.64% | 11.56% | 161.87% | -3.59% | -56.17% | -4.97% | 14.4% | -13.04% | 43.73% | -55.73% | 74.92% | 12.87% | -31.89% | 660.54% | - |
| EPS (Diluted) | 2661.56 | 3534.00 | 952.90 | 2019.00 | 2598.00 | 2873.61 | 1341.50 | 1255.13 | 1404.74 | 941.50 | 1520.50 | 1115.50 | -1976.32 | -333.22 | 2148.00 | 2971.00 | 2664.00 | 1061.90 | 1112.16 | 2556.00 | 2932.12 | 2532.73 | 2751.65 | 1737.83 | 3301.03 | 1357.09 | 1578.52 | 4801.81 | 329.03 |
| EPS Growth % | 42.37% | 270.87% | -52.8% | -22.29% | -9.59% | 114.21% | 6.88% | -10.65% | 49.2% | -38.08% | 36.31% | 156.44% | -493.1% | -115.51% | -27.7% | 11.52% | 150.87% | -4.52% | -56.49% | -12.83% | 15.77% | -7.96% | 58.34% | -47.35% | 143.24% | -14.03% | -67.13% | 1359.38% | - |
| EPS (Basic) | - | 3537.00 | 954.08 | 2021.50 | 2600.00 | 2879.50 | 1342.00 | 1255.81 | 1404.75 | 942.00 | 1521.50 | 1115.50 | -1976.32 | -333.22 | 2148.00 | 2971.50 | 2664.00 | 1061.90 | 1112.16 | 2556.00 | 2935.46 | 2536.19 | 2938.57 | 1994.34 | 3752.60 | 1357.09 | 1578.52 | 4801.81 | 329.03 |
| Diluted Shares Outstanding | 482.19M | 504.05M | 492.01M | 499.18M | 484.65M | 471.37M | 490.55M | 490.48M | 490.1M | 490.19M | 489.95M | 489.71M | 488.89M | 487.47M | 487.08M | 486.6M | 486.45M | 435.54M | 411.63M | 411.78M | 420.25M | 425.27M | 450.14M | 495.9M | 600.19M | 820.15M | 624.69M | 604.71M | 575.83M |
Quick answers to the most common questions about buying KT stock.
For fiscal year 2025, KT Corporation (KT) reported total revenue of $28.25T. This represents a 184.9% increase compared to $9.92T in 1998.
KT Corporation (KT) is profitable, generating $1.72T in net income for the fiscal year ending 2025 with a net profit margin of 6.1%.
KT Corporation (KT) reported an operating income of $2.59T, resulting in an operating profit margin of 9.2%. This margin reflects the operational efficiency of the business before interest and taxes.
KT Corporation (KT) generated $18.10T in gross profit for the year, representing a gross profit margin of 64.0%. This demonstrates the company's core pricing power and production efficiency.
Key Metrics
Top Statement Risk
Regulatory and political interference
Revenue Growth Decelerates Amidst Pricing Pressure
KT's revenue growth decelerated to -10.1% YoY in 2026Q2, a sharp reversal from the 13.5% growth in 2025Q2, suggesting that the tailwinds from prior rate adjustments or subscriber growth may be fading in a highly competitive market.
The significant deceleration in revenue growth, from double-digit expansion to a contraction, indicates that the company's top-line trajectory is not on a stable, upward path. This volatility is atypical for a regulated utility and suggests that KT's revenue is more sensitive to competitive dynamics and government pricing interventions than a traditional rate-case-driven model. The trend implies that future earnings growth cannot be reliably modeled on a simple revenue expansion thesis.
Operating Margin Volatility Signals Earnings Instability
Operating margin has swung dramatically from a high of 13.6% in 2025Q2 to a low of 5.3% in 2025Q4, indicating that KT's profitability is highly sensitive to non-operational factors and does not reflect a stable, regulated return profile.
The extreme volatility in operating margin, including a negative margin in 2024Q4, is inconsistent with the predictable earnings of a regulated utility. This pattern suggests that KT's reported earnings are heavily influenced by non-recurring items, accounting adjustments, or volatile segments like real estate and financial services, rather than a consistent earned return on a regulated asset base. Investors should discount the stability of the core earnings power based on this margin behavior.
Net Income Swings Undermine Earnings Durability
Net income has fluctuated from a loss of $666.0B in 2024Q4 to a profit of $687.9B in 2025Q2, demonstrating that reported EPS is not a reliable indicator of sustainable, regulated earnings power.
The erratic net income pattern, including a significant quarterly loss, points to substantial non-recurring charges or volatile non-operating income streams that obscure the underlying business performance. This level of volatility is a red flag for earnings quality, as it suggests that the company's bottom line is not driven by stable, recurring cash flows from its core telecom operations. The core regulated earnings growth rate is effectively masked by these swings.
Capital Intensity Fails to Translate to Stable Returns
Despite consistent capital expenditure reflected in high depreciation charges, the return on that investment, as measured by operating income, has been erratic and recently declined, suggesting poor capital allocation efficiency.
The company's substantial depreciation expense, consistently near $1T per quarter, indicates a heavy ongoing investment cycle. However, the failure of this investment to produce stable or growing operating income implies that the capital is not generating adequate incremental returns. This disconnect suggests that KT may be in a phase of heavy maintenance spending or investing in lower-return growth initiatives, rather than deploying capital into high-return regulated assets.
2024Q4 Loss Marks a Severe Earnings Dislocation
The massive net loss of $666.0B in 2024Q4, which wiped out the gains from the prior quarter, represents a critical inflection point that reset the earnings trajectory and highlights the company's vulnerability to large, non-recurring events.
This quarterly loss is the single most important event in the provided history, as it demonstrates the potential for severe earnings destruction. The cause, likely a large write-down or provision, fundamentally altered the year-over-year comparisons and signals that the company's financial results are subject to significant, unpredictable shocks. This event undermines the narrative of KT as a stable, utility-like investment.
Conglomerate Structure Masks Core Telecom Weakness
The reported 7.1% YoY revenue growth is misleading, as the consolidated results likely obscure a stagnating or declining core telecom business propped up by volatile contributions from non-core segments like real estate and financial services.
While headline revenue growth appears positive, the extreme volatility in operating and net margins suggests that the growth is not coming from the stable, high-margin telecom operations. The conglomerate structure allows for non-recurring gains from asset sales or financial services to temporarily inflate results, creating an illusion of health. The most significant risk is that the market is overvaluing the core business based on consolidated figures that are not representative of its standalone, regulated earnings power.