Net interest income (Tables)
 12 Months Ended
Dec. 31, 2021
Net interest income
in 2021 2020 2019
Net interest income (CHF million)
Loans 5,049 5,733 7,179
Investment securities 1 3 9
Trading assets, net of trading liabilities 1 2,838 3,158 3,827
Central bank funds sold, securities purchased under resale agreements and securities borrowing transactions 1,172 1,596 2,926
Other 598 771 2,730
Interest and dividend income 9,658 11,261 16,671
Deposits (159) (1,113) (3,055)
Short-term borrowings (86) (166) (409)
Central bank funds purchased, securities sold under repurchase agreements and securities lending transactions (812) (907) (1,668)
Long-term debt (2,518) (2,753) (3,412)
Other (272) (374) (1,110)
Interest expense (3,847) (5,313) (9,654)
Net interest income  5,811 5,948 7,017
1
Interest and dividend income is presented on a net basis to align with the presentation of trading revenues for trading assets and liabilities.
Bank  
Net interest income
in 2021 2020 2019
Net interest income (CHF million)   
Loans 4,993 5,694 7,173
Investment securities 1 3 9
Trading assets, net of trading liabilities 1 2,839 3,158 3,828
Central bank funds sold, securities purchased under resale agreements and securities borrowing transactions 1,172 1,596 2,926
Other 588 769 2,731
Interest and dividend income 9,593 11,220 16,667
Deposits (151) (1,107) (3,055)
Short-term borrowings 3 (170) (422)
Central bank funds purchased, securities sold under repurchase agreements and securities lending transactions (812) (908) (1,669)
Long-term debt (2,437) (2,702) (3,361)
Other (271) (373) (1,111)
Interest expense (3,668) (5,260) (9,618)
Net interest income  5,925 5,960 7,049
1
Interest and dividend income is presented on a net basis to align with the presentation of trading revenues for trading assets and liabilities.