In the present study, we have presented the activities and measures of the financial sector that support environmental protection and take into account climate change. To this end, existing international organizations have adopted documents to promote the use of climate-neutral green financial solutions by consumers, and new international organizations have been set up specifically for this purpose. The most successful of such organizations is NGFS, which currently has more than a hundred members. We have seen that the Hungarian National Bank has also taken a number of measures, announcing a program to green the financial sector.