7. Investment income
 
  Group Company  
  31 March 
2020 
Rm 
31 March 
2019 
Rm 
31 March 
2020 
Rm 
31 March
2019
Rm
 
  79  185  2 610  818  
Interest income 79  185  691  760  
Dividend income from subsidiaries –  –  1 919  58  

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