I have an Excel workbook that powers our business-and-referral tracking, but several formulas are returning the wrong numbers and throwing the entire dashboard off. I need a sharp-eyed Excel specialist to audit every calculation, pinpoint why the results are off, and rebuild the logic so the file is both accurate and fast to use. Here’s what I’m after: • A full review of existing formulas, with corrections or replacements where errors appear. • Streamlined calculations (dynamic ranges, structured references, or Power Query where it makes sense) so the sheet stays responsive as data grows. • Small usability tweaks—clearer labeling, protection of key cells, a tidy layout—so anyone on the team can navigate it without fear of breaking something. • A brief hand-off note explaining the core changes, so we can maintain the file without outside help. I value experience above all, so please highlight projects where you fixed or rebuilt complex Excel models that were producing incorrect results. If you like leveraging tools such as INDEX-MATCH/XLOOKUP, SUMPRODUCT, pivot tables, Power Query, or light VBA to get things right the first time, you’re exactly who I need.