Flagship momentum, XL Axiata tower leasing boosts TBIG’s core network play

Telekomunikasi Bersama Group’s flagship XL Axiata tower-leasing portfolio underlines how the Indonesian tower company earns its money: long-term rental contracts, inflation-linked tariffs and a focus on high-traffic sites. A look at the contract structure and why it matters to mobile users.

Edited by ad hoc news Flagship & Bestseller Desk. Reviewed before publication on 06/15/2026 at 3:15 PM ET. Details in the imprint.

Telekomunikasi Bersama Group’s flagship revenue engine is not a gadget but steel and concrete: its nationwide portfolio of telecommunication towers and related infrastructure leased to mobile operators, with XL Axiata as one of its anchor tenants. These long-term tower-leasing contracts, often spanning 10 years or more and indexed to inflation, form the backbone of TBIG’s cash flow and illustrate how the company monetizes Indonesia’s mobile data boom. For consumers, the dense network of XL Axiata sites riding on TBIG’s towers translates into better coverage and more stable 4G and 5G service, especially across Java and other high-traffic regions.

How TBIG’s XL Axiata tower leases work in practice

TBIG, formally Tower Bersama Infrastructure Tbk, positions itself as a neutral host that owns and operates towers, rooftop sites and in-building solutions, then leases space on these structures to carriers such as Telkomsel, Indosat Ooredoo Hutchison and XL Axiata. For each tower in the XL Axiata portfolio, the operator typically rents vertical space for its antennas, space in the equipment shelter, as well as access to power and backhaul connectivity, paying a recurring monthly fee per tenancy. The economic logic is straightforward: TBIG carries the capital expenditure and site maintenance, while XL Axiata converts those passive assets into mobile service for its subscribers. According to the company’s latest annual report, TBIG’s contracts feature inflation-linked tariff escalators, which help keep the real value of tower rents stable over time and underpin steady revenue growth. The 2023 annual report details the composition of TBIG’s tower portfolio and major tenants.

TBIG emphasizes that many of its tower sites are designed for co-location, meaning a single structure can host multiple mobile operators and technologies. This is economically relevant for XL Axiata’s leasing portfolio: where the tower already exists and has spare load capacity, adding XL Axiata gear is faster and cheaper than building a new site from scratch. For TBIG, every additional tenant on a given tower comes at a relatively small incremental cost, lifting the tenancy ratio and improving the return on invested capital. The company’s investor materials highlight Java as a core geography with particularly dense deployments, reflecting where data usage and population are highest. In practical terms, many subscribers may never consciously notice TBIG, but they rely on its XL Axiata towers when streaming video, navigating with maps or sending messages in Indonesia’s major urban centers.

Industry analysts point out that Indonesian mobile operators increasingly prefer asset-light models, offloading tower ownership to independent providers while keeping spectrum, active radio equipment and customer relationships on their balance sheets. This trend has produced a stream of sale-and-leaseback transactions and build-to-suit arrangements that feed TBIG’s flagship tower portfolio, including XL Axiata-related assets. For the operator, leasing rather than owning towers can free capital for network modernization and marketing; for TBIG, each deal adds predictable rental income visibility, subject to contract terms such as initial tenure and renewal options. Coverage maps published by XL Axiata show the operator’s 4G and growing 5G footprint across Indonesia, much of which is physically supported by third-party tower firms like TBIG. Although the end user buys a mobile plan from XL Axiata, part of the monthly fee ultimately pays for passive infrastructure rent under these long-term agreements.

Credit-rating agencies and local brokers covering TBIG generally view the tower-leasing business model as defensive, given its multi-year contracts and the essential nature of mobile connectivity. However, they also flag risks specific to the Indonesian market, including potential industry consolidation and regulatory changes that could affect tower demand or pricing power. The concentration of revenue among a handful of tenants means that XL Axiata remains strategically important in TBIG’s portfolio mix, alongside its other large operator clients. From a technology perspective, the transition from 4G to 5G and the steady growth of data-intensive applications are likely to increase the need for denser networks and additional equipment per site, which can support higher leasing volumes on existing towers. For now, TBIG’s strategy centers on deepening penetration in high-demand areas, selectively expanding to new regions and continuously increasing tenancy ratios on its XL Axiata and other operator sites.

Within Telekomunikasi Bersama Group, the XL Axiata tower leases exemplify the company’s core proposition: converting long-dated infrastructure contracts into stable operating cash flow while supporting Indonesia’s digitalization drive. TBIG is listed on the Indonesia Stock Exchange under the ticker TBIG, and its shares changed hands at IDR 2,040 on 06/14/2026, according to recent Jakarta market data. The Indonesia Stock Exchange profile for TBIG provides key trading information and shareholder data.

TBIG’s XL Axiata tower-leasing business in brief

• Product: XL Axiata tower-leasing portfolio (Indonesia)
• Manufacturer: Tower Bersama Infrastructure Tbk
• Category: Flagship/Bestseller tower-leasing service
• Launch date: Ongoing, core contracts expanded over multiple years
• MSRP / Price: Contracted monthly tower rents (operator-specific, not publicly itemized)
• Availability: Indonesian market, primarily on the islands of Java, Sumatra and other high-traffic regions
• Target audience: Mobile network operator XL Axiata and related group entities
• Key differentiator / USP: Long-term, inflation-linked tower-leasing contracts supporting dense coverage in Indonesia’s key population centers

This article was a.i.-assisted and editorially reviewed. Product information without warranty; prices and availability may change at short notice. Not investment advice and not a buy or sell recommendation. Trading involves risk up to and including the total loss of invested capital.