Verify Tax Data

Step 2: Fetch Official Data

Read sources.json from this skill's directory to get the list of URLs for the requested country.

For each source URL:

1. First try read_url_content to fetch the page
2. If the page requires JavaScript or the content is insufficient, use browser_subagent to navigate and extract data
3. Search the page for the specific data points listed in sources.json → dataPoints

Important: Sources are in the country's native language. Extract numerical values (rates, amounts, thresholds) regardless of language.

Step 3: Compare Data

For each data point, compare the app's current value against the official source value.

Classification:

• ✅ Match — values are identical
• ❌ Mismatch — values differ (include both old and new)
• ⚠️ Unverified — could not find or confirm from source

Step 4: Generate Report

Create a markdown report in the artifact directory with the following structure:

# Tax Data Verification: [Country Name] [Flag]

**Date**: [current date]
**Source(s)**: [list of URLs checked]
**Status**: [✅ All current / ❌ Updates needed / ⚠️ Partially verified]

## Income Tax

| Field           | Current Value | Official Value | Status |
| --------------- | ------------- | -------------- | ------ |
| Type            | progressive   | progressive    | ✅     |
| Bracket 1: max  | 2,400,000     | 2,400,000      | ✅     |
| Bracket 1: rate | 13%           | 13%            | ✅     |
| ...             | ...           | ...            | ...    |

## Deductions

| Field           | Current Value     | Official Value    | Status |
| --------------- | ----------------- | ----------------- | ------ |
| Personal amount | 0                 | 0                 | ✅     |
| Children type   | per_child_monthly | per_child_monthly | ✅     |
| ...             | ...               | ...               | ...    |

## Consumption Taxes

| Field    | Current Value | Official Value | Status |
| -------- | ------------- | -------------- | ------ |
| VAT rate | 20%           | 20%            | ✅     |

## Summary

[Brief summary of findings. If there are mismatches, list them clearly and offer to update the JSON file.]

Step 5: Propose Updates (if needed)

If mismatches are found:

1. Show the exact diff for the country JSON file
2. Ask the user for confirmation before applying changes
3. After updating, remind the user to run npm test to validate via Zod schema

Important Notes

• Tax data changes typically happen at the start of a calendar year
• Always note the tax year the data applies to (current year vs. next year)
• Some countries publish new rates before they take effect — clarify which year the rates are for
• The app uses annual amounts for brackets and deductions; convert monthly values if needed (multiply by 12)
• Rates in JSON are decimal fractions (e.g., 0.13 for 13%), not percentages