The rental price of Félagsbústaðir's apartments is index-linked, so rental prices can vary slightly between months.
If there was a significant change in the amount of your invoice, the reason may be a change in the amount of housing benefits from Húsnæðis and Mannvirkjastofnun (HMS) or special housing support. from Reykjavík city.
Please note that a detailed invoice will appear in your online bank.