Are you taxed on medical benefits from employer?

1. I would like to know if the medical aid contribution benefit from the employer is also taxable?
2. Are you taxed on salary or total earnings?
3. When does the tax period start and end?

The tax period starts on 1 March of each year and runs until the end of February of the next year. You will be taxed on all your earnings including the benefits your employer provides to you such as a medical aid contribution.