Danish banks levy charges separately to the interest rate.
So these loans seem to cost ~1%+ in reality, i.e. these negative rate Danish loans are probably still more expensive than the cheapest Irish tracker mortgages.
Ja, du læste rigtigt. Du kan nu få et fastforrentet realkreditlån med afdrag og med en løbetid på op til 10 år, hvor renten er under nul procent.
"[Translated by google]Yes, you read right. You can now get a fixed-rate mortgage with a maturity of up to 10 years, where the nominal interest rate is negative. However, you are not exactly going to make money borrowing. Namely, there must also be paid, among other things, establishment fees and contributions, and there will be a loss of prices."