Total investment costs for the project were SEK 6 billion, of which SEK 2 billion was financed through state grants to the Swedish Rail Administration who built the quadruple track along the East Coast Line. The public–private partnership part of the project involved two new tracks at Stockholm C and the Arlanda Line, costing SEK 4.1 billion. Of this, SEK 2.4 billion was financed by the state. In addition, the state held a financial guarantee to Nordea for the X3 trains, should A-Train fail to meets its financial obligations to the bank. A-Train was also granted an interest-free deferral on the payment of the fees at Stockholm C and Arlanda, costing the state SEK 90 million. Of A-Train's capital loan for SEK 2.2 billion, SEK 1.8 billion was borrowed from three state-owned financial institutions: the Swedish National Debt Office, the Swedish Export Credit Corporation and the Nordic Investment Bank. In addition, 20% of the share capital was secured through Vattenfall's equity in the company.