Excel Variance Analyzer

Overview

Performs comprehensive budget vs actual variance analysis with automated drill-down, root cause identification, and executive reporting.

Prerequisites

• Excel or compatible spreadsheet software

• Budget data by period and category

• Actual results for comparison

• Cost center or department structure

Instructions

• Import budget and actual data into comparison template

• Calculate absolute and percentage variances

• Apply materiality thresholds for flagging

• Create drill-down by category, period, or cost center

• Generate variance waterfall chart for executive reporting

Output

• Variance summary with favorable/unfavorable indicators

• Materiality-filtered exception report

• Waterfall chart showing budget-to-actual bridge

• Drill-down by category or cost center

Error Handling

Error Cause Solution

Missing periods Data gaps Fill with zeros or interpolate

Percentage calc error Zero budget Use IF to handle div/0

Misaligned categories Changed chart of accounts Create mapping table

Examples

Example: Monthly P&L Variance Request: "Analyze why we missed budget by $500K this month" Result: Variance waterfall showing revenue shortfall offset by OPEX savings

Example: Department Budget Review Request: "Which departments are over budget YTD?" Result: Ranked list by variance magnitude with drill-down to line items

Resources

• FP&A Best Practices

• ${CLAUDE_SKILL_DIR}/references/variance-formulas.md for calculation templates