Barclays Bank of Zimbabwe (the appellant) operated a management share option scheme to incentivize and retain managerial staff. The scheme allowed managerial employees to purchase shares at the middle market price prevailing on the day immediately prior to the grant of the option. The options were not transferable and would expire upon termination of employment, demotion, retirement, or after 10 years. On 23 October 2001, the Zimbabwe Revenue Authority (the respondent) served a garnishee order on the Reserve Bank of Zimbabwe requiring payment of $301,572,750.05 from the appellant's account as taxes, including employees' tax (PAYE) which the respondent claimed should have been withheld from employees who exercised share options. The appellant brought a High Court application seeking a declaratur that no taxable benefit accrued to employees at the date of exercising their share options, and therefore it was not obliged to withhold PAYE. When employees exercised their options, the bank sold shares on their behalf, deducted the option price from the proceeds, and paid the balance (profit) to the employees without them making any out-of-pocket payment.