There are also some third parties which utilize the fact that transfers within the same bank are instant - they have bank accounts in all of those and a settlem

There are also some third parties which utilize the fact that transfers within the same bank are instant - they have bank accounts in all of those and a settlement system built on top of that. You transfer the money to them, and then they send a transfer directly from the bank of recipient. It's nearly instant, but has some limits to it (several thousand euros). In fact it's quite jarring when you have companies try to do something in Polish market and they don't do basic research into payment methods. Take for example Luxxotica - I was buying some glasses as a gift yesterday, and they support two payment methods: - card payment - PayPal Paypal hasn't been popular for years with all the other alternatives, and many people are wary of using cards to buy goods over the internet. In fact my card payment was blocked (which essentially never happens in any other methods) and I went to buy the glasses physically at a reseller.