Japan’s fixed communication services market is expected to remain largely stable through the end of the decade as rapid growth in fiber broadband balances the continued decline of traditional voice services. According to analysis from GlobalData, the country’s telecom sector is undergoing a structural transition where operators are focusing on high-speed connectivity and bundled digital offerings to sustain revenue growth in an otherwise mature and highly saturated fixed-line market.
Stable Revenue Growth in a Mature Market
The latest forecast indicates that Japan’s fixed communication services revenue will grow modestly from $26.4 billion in 2025 to $26.9 billion by 2030. This reflects a compound annual growth rate of around 0.4 percent during the forecast period.
The modest expansion highlights the maturity of Japan’s telecom sector, where subscriber growth is limited and operators increasingly rely on broadband upgrades, bundled services, and premium offerings to maintain revenue levels.
Decline of Fixed Voice Services
Traditional fixed voice services are expected to continue their downward trajectory as telecom operators bundle voice telephony into broader service packages at little or no additional cost. Fixed voice revenue is projected to decline at a CAGR of 1.8 percent between 2025 and 2030.
This shift reflects changing consumer behavior, with households and businesses moving toward digital communication platforms and broadband-based services instead of standalone voice subscriptions.
Fiber Broadband Driving Market Growth
While voice services decline, fiber broadband is emerging as the primary growth driver in Japan’s fixed telecom sector. Fixed broadband revenue is expected to grow at a CAGR of 1.3 percent during the forecast period, supported by steady expansion of fiber-optic access networks.
Fiber technology will remain the dominant broadband platform in Japan. Its share of total fixed broadband subscriptions is projected to rise from 87.9 percent in 2025 to 88.8 percent by 2030.
The expansion is supported by strong demand for high-speed connectivity, government initiatives to accelerate fiber deployment, and the gradual phase-out of DSL infrastructure across the country.
Japan has set an ambitious national target to achieve 99.9 percent residential fiber-optic coverage by the end of 2027, reinforcing the country’s leadership in next-generation broadband connectivity.
Main telecoms
NTT Group is the largest operator in Japan’s fixed telecom market and remains the backbone of the country’s broadband infrastructure. Through regional subsidiaries NTT East and NTT West, the company controls a significant portion of the national fiber network. NTT holds roughly half of Japan’s fixed broadband market and serves more than 23 million fiber broadband subscribers through its FLET’S Hikari platform. The company also maintains a strong position in fixed voice services through both traditional PSTN and VoIP offerings. NTT continues to invest heavily in nationwide fiber infrastructure and next-generation optical technologies, including the Innovative Optical and Wireless Network architecture. Its long-term strategy focuses on ultra-high-speed connectivity, enterprise networking services, and the integration of fiber with cloud, AI, and edge computing capabilities.
KDDI is the second largest player in Japan’s fixed telecom sector and a major competitor in fiber broadband services. The company holds an estimated 20 to 25 percent share of the fixed broadband market and serves around 7 to 8 million subscribers through its au Hikari service. KDDI continues to invest in expanding fiber infrastructure, particularly in urban areas where demand for ultra-fast broadband remains strong. A key element of the company’s strategy is the convergence of fixed and mobile services, combining fiber broadband with its au mobile offerings. By bundling broadband, television, and smart home services, KDDI aims to strengthen customer loyalty and capture higher-value residential and enterprise customers.
SoftBank is another major operator in the fixed broadband market. The company holds approximately 15 to 20 percent of broadband market share and serves more than 8 million fixed broadband customers through its SoftBank Hikari service. Unlike NTT, SoftBank relies heavily on wholesale fiber infrastructure while focusing on service innovation and competitive pricing. The company’s investment strategy emphasizes digital services, enterprise connectivity, and smart home platforms. SoftBank also promotes bundled telecom packages by integrating fixed broadband with its mobile services under the SoftBank and Y!mobile brands. This approach allows the company to compete aggressively in customer acquisition and service differentiation.
Rakuten Group is a relatively new entrant in the telecom sector but is gradually expanding its presence in Japan’s fixed broadband market. While its market share remains smaller compared with established operators, Rakuten is leveraging partnerships and wholesale infrastructure to offer fiber broadband services. The company’s broader investment focus has been on building its mobile network and digital ecosystem. Rakuten’s strategy centers on integrating broadband services with its extensive online platform that includes e-commerce, fintech, digital content, and loyalty programs. By combining connectivity with digital services, Rakuten aims to create a differentiated customer experience and expand its telecom subscriber base.
Future Outlook: Fiber and Bundled Services
Looking ahead, Japan’s fixed telecom market will be defined by fiber-led connectivity and bundled digital services. As broadband becomes the core revenue engine for telecom operators, companies are expected to prioritize network upgrades, higher-speed service tiers, and value-added digital offerings.
BABURAJAN KIZHAKEDATH
