The story
Bankgirot was started in 1959. Postgirot (now called PlusGirot), the main competitor, having its own account system, was not able to offer deposits into bank accounts and still does not generally do so except to Nordea bank accounts.
Nordea was obliged to withdraw from involvement in Bankgirocentralen's operations related to Bankgirot for competitive reasons when it acquired Postgirot Bank (now PlusGirot) in 2002.
In 2012 Bankgirot established second-fast electronic payments, used for a mobile phone payment system called Swish.
From Wikipedia’s article on Bankgirot, shared under CC BY-SA 4.0.4