> For the complete documentation index, see [llms.txt](https://docs.insuraviews.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.insuraviews.com/getting-started/additional-tools/diff-view.md).

# Diff View

Compare two specific rate filings side-by-side to identify differences and similarities.

**What it does:** Provides detailed comparison between any two filings using their SERFF tracking numbers, highlighting exactly what changed between versions or how different companies approach similar rate actions.

**How to use:**

1. Go to "Diff View"
2. **Enter SERFF Tracking Numbers**: Input the two specific SERFF tracking numbers you want to compare
3. **Run Comparison**: System analyzes both filings and generates detailed comparison
4. **Review Results**: View the comparative analysis showing:
   * **Rate Changes**: Differences in proposed rate adjustments
   * **Justifications**: How each filing explains their rate needs
   * **Supporting Data**: Variations in loss ratios, trend factors, and expenses
   * **Geographic Scope**: Territory and coverage differences
   * **Timeline Differences**: Filing and effective date variations

**Use Cases:**

* **Version Comparison**: Compare original filing vs. amended version to see what changed
* **Competitor Analysis**: Understand how different companies approach similar rate needs
* **Strategy Development**: Learn from successful filings when preparing your own
* **Regulatory Preparation**: Anticipate questions by seeing how similar filings were reviewed

<figure><img src="https://3627719227-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FRDo7Wvsasy8Pyg5liYJv%2Fuploads%2FMf4NRhLxazsERyylS1dP%2FScreenshot%202026-08-25%20at%202.09.00%E2%80%AFPM.png?alt=media&amp;token=bc92a6f6-f432-4288-a99c-1f6cbe0e8b79" alt=""><figcaption><p>Diff View with a SERFF tracking number entered to show how the system checks for valid entries</p></figcaption></figure>

<figure><img src="https://3627719227-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FRDo7Wvsasy8Pyg5liYJv%2Fuploads%2Fu3liA9R1gnsDmVasFeCs%2FScreenshot%202026-08-25%20at%202.08.46%E2%80%AFPM.png?alt=media&amp;token=59a508e9-4228-42f8-b11c-23ecbbf1417f" alt=""><figcaption><p>Example of the resulting Diff Report</p></figcaption></figure>


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