7. Investment income
 
   Group  Company 
   31 March
2022
Rm
31 March
2021
Rm
31 March
2022
Rm
31 March
2021
Rm
Investment income 144 188 4 163 1 643
Interest income 122 188 50 134
Dividend income from subsidiaries  –  4 091 1 509
Dividend income from third party 22 22

Interest income relates to interest earned from financial assets (cash and cash equivalents and loans) measured at amortised cost. Interest is recognised on a time proportionate basis, taking into account the principal amount outstanding and the effective interest rate.

Included in dividend income from subsidiaries is special dividends received from BCX of R1 508 million and from Gyro of R762 million.

In the current financial year, Telkom received a dividend of R22 million (31 March 2021: Rnil) from Mutual and Federal third-party cell captive.