Excel Payroll & Audit Automation

I want to consolidate three recurring finance tasks—salary preparation, monthly revenue audits, and stock control—into one smart Excel-based workflow. All data is already living in spreadsheets; what I need now is a cleaner structure and deeper automation so the work stops feeling manual.

Here is where I specifically need your expertise:

• Formulas and functions: dynamic salary calculations, statutory deductions, conditional alerts when numbers fall outside preset limits.
• Pivot tables and data analysis: quick snapshots of revenue by product, period-over-period variance, and stock movement trends.
• Macros and automation: push-button routines that import raw data, refresh reports, and generate month-end summaries in PDF.

Deliverables I expect
1. An easy-to-maintain workbook (or set of linked workbooks) covering payroll, revenue, and inventory modules.
2. Clearly commented VBA macros so I can tweak thresholds or add new periods without touching the code base.
3. A brief hand-off guide or Loom walkthrough showing how to update data sources and run the monthly cycle.

The solution has to work in vanilla Excel—no third-party add-ins—so that anyone on the team can open, review, and share the file without compatibility issues.

If this sounds like the kind of build you enjoy, let me know your approach and an estimated turnaround.