Withholding Tax Slip Image Reading

Image Reading Method

Recommended: Dual Verification (Parallel Two Contexts)

1. Execute two independent readings: In an environment where sub-agents are available, launch two sub-agents in parallel to read the image independently. Pass the following "Basic Rules" and "Output Format" as prompts to each sub-agent, and specify the image file path.
2. Result cross-verification: Compare key fields (such as amounts) from both reading results.
3. If results match: Adopt the result as-is. Report "Results matched in two independent readings."
4. If results do not match: Present the original image path and both results to the user, and ask them to select the correct one:
   • Clearly indicate fields with discrepancies
   • Offer three options: Adopt A / Adopt B / Manual input

Fallback (When Sub-Agents Are Not Supported)

1. Directly read the image file using the Read tool
2. Extract data according to the following "Basic Rules" and "Output Format"
3. Present the extraction results to the user and always request visual confirmation

Basic Rules

• Read image files using the Read tool (Claude Vision automatically recognizes images)
• Always return amounts as int (integer in yen). Remove commas and the "yen" character
• Return dates in YYYY-MM-DD format
• Convert Japanese calendar years to Western calendar (Reiwa 7 → 2025, Reiwa 6 → 2024, Heisei 31 → 2019)
• For unreadable fields, use UNKNOWN (string) or 0 (amount)
• If multiple files are provided, process all sequentially and return the combined results

Output Format

---WITHHOLDING_DATA---
payer_name: Payer Name
payment_amount: Payment Amount (int)
withheld_tax: Withheld Tax Amount (int)
social_insurance: Social Insurance Premiums, etc. (int)
life_insurance_deduction: Life Insurance Premium Deduction (int)
earthquake_insurance_deduction: Earthquake Insurance Premium Deduction (int)
housing_loan_deduction: Special Deduction for Housing Loans, etc. (int)
life_insurance_detail:
  general_new: General New Insurance Premiums (int)
  general_old: General Old Insurance Premiums (int)
  medical_care: Long-term Care Medical Insurance Premiums (int)
  annuity_new: Personal Pension New Insurance Premiums (int)
  annuity_old: Personal Pension Old Insurance Premiums (int)
---END---

Extraction Points

• Prioritize extracting the "Payment Amount" column (total salary income)
• Accurately read the "Withheld Tax Amount" column
• Read the "Social Insurance Premiums, etc." column
• For life insurance premium deductions, check the breakdown of new/old systems and 3 categories (general/long-term care medical/personal pension)
• Extract earthquake insurance premium deductions and housing loan deductions only if they are listed
• Extract the payer's name (company name)
• Set unlisted items to 0

Processing Multiple Files

1. Use the Glob tool to retrieve the file list (if a pattern is specified)
2. Read each file sequentially using the Read tool
3. Return the combined results of all files (include the file name before each result)

## file1.jpg
---WITHHOLDING_DATA---
...
---END---

## file2.jpg
---WITHHOLDING_DATA---
...
---END---