Actually, payroll calculations in large firms are usually done at a corpo- rate or regional office using specialized software. Describe the advantages of such a system for local managers as well as for the corporation 1. Easy Calculation : It is effective in saving time and money. Accounts department can reports for financial analysis and other purposes. 2. Forcasting for recruitment can be done easily effect on cash flow by expansion plan. 3. Tax Management can be handle easily and there need not to look for piles of pay-slips to see the records for tax payments. 4. Reliable backup. As a business, keeping large amounts of data for payroll can be challenging. You can't store piles of papers and data manually. But when you are using payroll software, it is convenient to save records in various databases available online. In case your computer or system is destroyed, you should still have a backup to get all your records back.( Simons, R. (1990)