Excel Payroll Formulas Consultation

I’m refining our in-house payroll workbook and want rock-solid, automated calculations for wages and deductions. The immediate need is to plug in overtime and bonus logic: hours-based OT rates, tiered... (Budget: ₹100 - ₹400 INR, Jobs: Accounting, Data Analysis, Data Management, Data Processing, Excel, Excel Macros, Excel VBA, Visual Basic)