Sumitomo Mitsui Auto ServiceNarrow moat

Sumitomo Corporation (8053) — moat facet

Sumitomo's car leasing stake earns a steady ¥10 billion a year while the rest of its auto business swings.

Sumitomo holds 40.43% of Sumitomo Mitsui Auto Service, a car leasing company, whose equity earnings were ¥9.0 billion in the year to March 2025, ¥9.6 billion in 2026 and ¥9.9 billion forecast1. It is one of the steadiest contributors in the Automotive segment.

Sumitomo Mitsui Auto Service equity earnings (¥ bn, years to March)9.020259.620269.92027 forecastSumitomo results presentation, May 2026
Small and steady.

Car leasing to companies earns from long contracts and from selling vehicles at the end of them. It is also tied to the leasing partnership: the company notes that its total stake is 50%, divided between two of its groups2.

Its contribution is small against the Automotive segment's ¥63.2 billion of profit in the latest year3, but it is growing steadily while other automotive businesses swing.

The automotive segment also holds a 50% stake in TBC, whose equity earnings rose from ¥0.5 billion to ¥31.1 billion in the latest year, a figure that included the gain on selling Midas4. Car leasing is the steadier business beside it: its earnings do not depend on one-off sales.

The measure is its contribution. Continued growth toward ¥10 billion would show corporate car leasing holding up against the trend toward other forms of mobility.

Moat trajectory: Holding steady

Equity earnings rose from ¥9.0 billion to ¥9.6 billion.

The number that tests this moat
Reported
Sumitomo Mitsui Auto Service equity earnings, latest year
¥9.6bn against ¥9.0bn

The steady part of the automotive segment.

Source: Sumitomo Corporation results presentation, May 2026 ↗
⚠ Threats to the moat
⚠ THREAT 01
The Rest of the Auto Business Swings
Sumitomo's automotive profit halves this year once last year's one-off gain drops out.
References
  1. ReportedSumitomo holds 40.43% of Sumitomo Mitsui Auto Service, a car leasing company, whose equity earnings were ¥9.0 billion in the year to March 2025, ¥9.6 billion in 2026 and ¥9.9 billion forecast.
    Sumitomo Corporation, results presentation for the year to March 2026 - leasing and aviation: SMFL, SMBC Aviation Capital, the lessor rankings, Air Lease and the automotive businesses. — FY to March 2026 · publ. May 2026 · source ↗
  2. ReportedIt is also tied to the leasing partnership: the company notes that its total stake is 50%, divided between two of its groups.
    Sumitomo Corporation, results presentation for the year to March 2026 - leasing and aviation: SMFL, SMBC Aviation Capital, the lessor rankings, Air Lease and the automotive businesses. — FY to March 2026 · publ. May 2026 · source ↗
  3. ReportedIts contribution is small against the Automotive segment's ¥63.2 billion of profit in the latest year, but it is growing steadily while other automotive businesses swing.
    Sumitomo Corporation, Consolidated Financial Results for the year ended March 31, 2026 (IFRS) - results, segment profit, the financial position, dividends, the share split and the forecast for the year to March 2027. — FY to March 2026 · publ. May 2026 · source ↗
  4. ReportedThe automotive segment also holds a 50% stake in TBC, whose equity earnings rose from ¥0.5 billion to ¥31.1 billion in the latest year, a figure that included the gain on selling Midas.
    Sumitomo Corporation, results presentation for the year to March 2026 - leasing and aviation: SMFL, SMBC Aviation Capital, the lessor rankings, Air Lease and the automotive businesses. — FY to March 2026 · publ. May 2026 · source ↗
Sources
Generated September 24, 2026