Bonus Calculation is the process of determining the amount of bonus payable to an employee based on predefined organizational policies, statutory regulations, performance metrics, attendance records, salary components, incentives, profitability, or other eligibility criteria. The calculation may vary depending on company compensation structures, employment agreements, and applicable labor laws. In a Human Resource Management System (HRMS), bonus calculation is automated using configurable formulas, eligibility rules, payroll integration, attendance data, performance appraisals, tax deductions, and statutory compliance requirements. HRMS ensures accurate bonus computation, minimizes manual errors, streamlines approval workflows, generates audit-ready reports, and supports timely bonus disbursement. Automated bonus calculation enhances payroll efficiency, transparency, employee satisfaction, and compliance with organizational and legal requirements.