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CNFANS: Automate Seller Ratings with Spreadsheet Formulas

2025-12-14

Streamline your supplier evaluation by creating auto-calculating performance scores based on reliability and refund data.

The Challenge: Manual Score Calculation is Slow & Error-Prone

As an online seller or sourcing agent, consistently evaluating supplier performance is crucial. Manually calculating scores from order fulfillment rates, on-time delivery data, and refund ratios for dozens of suppliers is not only time-consuming but also susceptible to human error. This process often leads to inconsistent ratings and delays in decision-making.

By leveraging powerful, built-in spreadsheet formulas, you can create a dynamic, self-updating rating system that saves hours of work and provides real-time insights into seller performance.

Building Your Automated Scoring Model

The core idea is to combine Reliability RatioRefund Ratio

Step 1: Structure Your Data

Set up your spreadsheet with clear columns. A basic structure should include:

  • Seller Name
  • Total Orders
  • Successful Orders
  • Total Order Value
  • Total Refund Value
  • Reliability Score
  • Refund Ratio
  • Final Performance Score

Step 2: Implement the Core Formulas

Here are the essential formulas to automate the calculations. We assume data starts on row 2.

1. Reliability Ratio (Column F):

=IFERROR(C2/B2, 0)

This calculates the percentage of successful orders. The IFERROR

2. Refund Ratio (Column G):

=IFERROR(E2/D2, 1)

This calculates the percentage of revenue lost to refunds. A higher ratio is worse. IFERROR

3. Final Weighted Performance Score (Column H):

=(F2*0.7) + ((1-G2)*0.3)

This formula combines the two metrics into a score from 0 to 1 (or 0-100%). Here, Reliability is weighted 70%30%. Adjust these weights (0.7 and 0.3) based on your business priorities. The (1-G2)

Advanced Automation & Formatting

To make your dashboard more actionable, add these enhancements:

Automatic Rating Tiers (Column I):

=IF(H2>=0.9, "A: Excellent",
 IF(H2>=0.8, "B: Good",
 IF(H2>=0.65, "C: Fair",
 "D: Review Needed")))

This nested IF

Conditional Formatting for Scores:

Apply color scales to the Final Performance Score column (H). Green for high scores (e.g., >0.8), yellow for medium, and red for low scores (e.g., <0.6). This creates an instant "heat map" of supplier health.

Benefits & Final Tips

  • Dynamic Updates:
  • Data-Driven Decisions:
  • Scalability:
  • Customize:

By investing an hour to set up this automated scoring system, you free up countless future hours, ensure consistent evaluation, and build a more reliable and profitable supply chain. Start implementing these formulas in your CNFANS supplier spreadsheet today!