10. Employee benefits
10.6 Sensitivity analysis
 
   Group Company
   31 March 
2023 
Rm 
31 March 
2022 
Rm 
31 March 
2023 
Rm 
31 March 
2022 
Rm 
   Increase/(decrease) on the post-employment liability
The Telkom Pension Fund             
Increase in discount rate by 0.5%  (1) (1) (1) (1)
Decrease in discount rate by 0.5%  1  1  1  1 
Increase in inflation rate by 1%  3  3  3  3 
Decrease in inflation rate by 1%  (3) (3) (3) (3)
Increase in salary inflation by 1%  3  3  3  3 
Decrease in salary inflation by 1%  (3) (3) (3) (3)
Change in post-retirement mortality rating from -1 to -2 years  1  1  1  1 
Change in post-retirement mortality rating from -1 to 0 years  (1) (1) (1) (1)
The Telkom Retirement Fund             
Increase in discount rate by 0.5%  (1 181) (1 239) (1 181) (1 239)
Decrease in discount rate by 0.5%  1 282  1 351  1 282  1 351 
Increase in inflation rate by 1%  2 798  2 933  2 798  2 933 
Decrease in inflation rate by 1%  (2 219) (2 485) (2 219) (2 485)
Increase in net TRF fund rate by 0.5%  431  427  431  427 
Decrease in net TRF fund rate by 0.5%  (426) (421) (426) (421)
Increase in TRF take-up ratio from 55.6% to 100%  409  651  409  651 
Medical benefits             
Increase in discount rate by 0.5%  (38) (45) (38) (45)
Decrease in discount rate by 0.5%  41  48  41  48 
Increase in inflation rate by 1%  66  76  66  76 
Decrease in inflation rate by 1%  (59) (69) (59) (69)
Change in post-retirement mortality rating from -1 to -2 years  58  66  58  66 
Change in post-retirement mortality rating from -1 to 0 years  (57) (64) (57) (64)
Telephone rebates             
Increase in discount rate by 0.5%  (11) (13) (11) (13)
Decrease in discount rate by 0.5%  12  14  12  14 
Increase in inflation rate by 5%  184  212  184  212 
Change in post-retirement mortality rating from -1 to -2 years  5  6  5  6 
Change in post-retirement mortality rating from -1 to 0 years  (5) (6) (5) (6)
Increase in normal retirement age from 56 years to 60 years  (5) (28) (5) (28)
Decrease in normal retirement age from 56 years to 50 years  5  24  5  24