From my experience working in corporate environments, relying on Excel as the main tool for company operations—especially financials—is far more common than one might expect. Despite the availability of sophisticated enterprise resource planning (ERP) software, many billion-dollar companies still use Excel extensively. This often leads to inevitable issues like inconsistent numbers, formula errors, and version control problems. Personally, I've seen how overdependence on Excel creates bottlenecks and inaccuracies that could have been avoided with specialized software. For instance, when data is manually entered or formulas get overwritten unknowingly, the outputs don’t align, leaving teams scrambling to reconcile differences before important deadlines. Another challenge is collaborative work: when multiple users edit the same spreadsheet without robust real-time syncing, discrepancies arise. This is why businesses that depend on Excel must implement strict protocols for document management and consider migrating to integrated financial platforms for better data integrity and audit trails. However, Excel remains popular due to its flexibility, familiarity, and low cost. Many professionals feel comfortable creating custom solutions that fit their unique workflows. But as companies grow, the spreadsheet’s limitations become apparent—highlighting the need to balance reliance on Excel with more scalable and error-resistant systems. Overall, if you find your numbers don’t match while running reports on Excel, it’s a sign to review how your data is managed and possibly upgrade your tools to reduce errors and improve efficiency. Remember, Excel is powerful but not foolproof, so leveraging it correctly along with complementary tools makes a difference in day-to-day corporate life.