How do I ensure that a new employee gets his full tax credit from previous months?

For permanent and seasonal workers, tax is is normal and it is cumulative. However if an employee starts mid way through the tax year then you need to enter the previous-tax-emoluments and deductions in order for harvester not to assume Month 1(January) for the start month. When Harvester assumes Month 1 for tax this means that no tax credit is given for the previous months prior to the employee joining your company. If the employee did not earn any salary in Zambia in the current tax year, before they joined the company, then just enter the nominal number 1 in the Previous-Employment Taxable Income on the Edit employee details screen. This will then signal Harvester to give the full cumulative tax credit for all the months prior to the employee starting.