KAI has received Rs 1.4 trillion from Bank Bandiri, Bank Negara Indonesia, Bank Raykat Indonesia, and Bank Central Asia, while Railink – a joint venture between KAI and state-owned airport operator Angkasa Pura – has received Rs 612bn to finance new rolling stock.

The Rs 2.5 trillion project involves constructing a 12km double-track branch, which will diverge from the Jakarta – Tangerang commuter line near Batu Ceper station before turning north towards the airport. Construction is expected to begin in July with the aim of launching commercial services at the end of next year.

Services will link the airport with Tanah Abang in central Jakarta and Manggarai in the south of the city, with a one-way fare of Rs 100,000.