The proceeds from the bonds taken up by the market are passed on to the 24 Swiss cantonal banks in the form of loans. The cantonal banks not only hold the Pfandbriefzentrale's entire share capital but are also the sole borrowers. 21 cantonal banks also have an unlimited state guarantee from their canton for their commitments. All the cantonal banks have a good or very good credit rating.
The composition of the mortgage-covered loan book is as follows (amounts in CHF million):
| CHF | 11'999 | Zürcher Kantonalbank |
| CHF | 7'390 | Luzerner Kantonalbank |
| CHF | 6'980 | Berner Kantonalbank |
| CHF | 6'243 | Banque Cantonale Vaudoise |
| CHF | 5'805 | Thurgauer Kantonalbank |
| CHF | 4'460 | Banque Cantonale de Fribourg |
| CHF | 4'306 | St. Galler Kantonalbank |
| CHF | 4'027 | Banque Cantonale de Genève |
| CHF | 3'352 | Graubündner Kantonalbank |
| CHF | 3'319 | Basler Kantonalbank |
| CHF | 3'218 | Basellandschaftliche Kantonalbank |
| CHF | 2'325 | Banca dello Stato del Cantone Ticino |
| CHF | 2'192 | Banque Cantonale Neuchâteloise |
| CHF | 2'166 | Banque Cantonale du Valais |
| CHF | 1'893 | Aargauische Kantonalbank |
| CHF | 1'796 | Schwyzer Kantonalbank |
| CHF | 1'747 | Zuger Kantonalbank |
| CHF | 1'234 | Nidwaldner Kantonalbank |
| CHF | 965 | Schaffhauser Kantonalbank |
| CHF | 847 | Glarner Kantonalbank |
| CHF | 825 | Banque Cantonale du Jura |
| CHF | 698 | Urner Kantonalbank |
| CHF | 557 | Obwaldner Kantonalbank |
| CHF | 498 | Appenzeller Kantonalbank |
| CHF | 78'842 | Total |
Status as of 30 May 2023