shinkoku profile --config shinkoku.config.yaml

□ Is the full name (last name, first name) registered?
□ Is the address (postal code, prefecture, city/town/village, street number) registered?
□ Is the My Number registered? (has_my_number: true)
□ Is the competent tax office name registered?
□ Is the submission method (e-tax/mail/in-person) set?

Advantages:
  - Accepts submissions 24 hours a day (during the submission period)
  - Allows omission of attached documents (5-year retention obligation applies)
  - Meets the requirements for the Blue Tax Return Special Deduction of 650,000 yen
  - Faster refund processing (usually about 3 weeks, 1-2 months for paper submissions)
  - Can be completed from home

Required Items:
  - My Number Card + IC card reader or My Number Card-compatible smartphone
  - Claude in Chrome extension (proxies input for the Tax Return Preparation Corner)

Procedure:
  1. Access the Tax Return Preparation Corner in Chrome
     (https://www.keisan.nta.go.jp/)
  2. Use the `/e-tax` skill in Claude in Chrome to proxy input
     - Automatically fills in each screen form based on shinkoku's tax calculation results
     - User visually confirms screen transitions and input values
  3. Log in and apply electronic signature using My Number Card (manual operation)
  4. Perform final review of content before sending
  5. Apply electronic signature and send
  6. Note the acceptance number (displayed after sending)
  7. Confirm the receipt notification (delivered to the message box)

Advantages:
  - No need to visit the tax office
  - Postmark date counts as the submission date (postmark on the deadline date is valid)

Notes:
  - The upper limit for the Blue Tax Return Special Deduction is 550,000 yen (if not using e-Tax or electronic bookkeeping)
  - Must enclose attached documents
  - If you need a receipt stamp on your copy, enclose a self-addressed stamped envelope

Procedure:
  1. Print the tax return (A4 black and white is acceptable)
  2. Attach attached documents to a backing sheet
  3. Make a copy of the tax return (for your records)
  4. Enclose the following in an envelope:
     - Original tax return
     - Attached documents (various certificates, etc.)
     - Copy of My Number Card (front and back)
     - If a copy is needed: Copy of tax return + self-addressed stamped envelope
  5. Mail to the competent tax office (write "Tax Return Enclosed" on the envelope)
  6. Recommended to use simple registered mail or special recorded mail (to retain proof of shipment)

Confirming the Address:
  Search for the competent tax office on the NTA website's "For those who want to know the location of tax offices, etc."

Advantages:
  - Can receive a receipt stamp immediately
  - If there are deficiencies, they will be pointed out on the spot

Notes:
  - Crowded during the tax return period (especially late February to early March)
  - Subject to tax office business hours (weekdays 8:30 AM to 5:00 PM)
  - Some tax offices are open on Sundays during the submission period

Procedure:
  1. Print the tax return
  2. Prepare attached documents
  3. Bring a copy (for your records)
  4. Submit at the counter of the competent tax office
  5. Get a receipt stamp on your copy

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Submission Deadlines for Reiwa 7 (2025) Tax Returns
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■ Income Tax Return
  Submission Deadline: Monday, March 16, Reiwa 8 (2026)
  ※ If March 15 falls on a Sunday, the deadline is the following Monday
  ※ Refund returns can be submitted from January 1, Reiwa 8

■ Consumption Tax Return
  Submission Deadline: Tuesday, March 31, Reiwa 8 (2026)

■ Payment Deadline
  Income Tax: Same as submission deadline (March 16)
  Consumption Tax: Same as submission deadline (March 31)
  ※ For transfer payment, account withdrawal will be in late April

■ Deadline for Blue Tax Return Special Deduction of 650,000 Yen
  Submission by the deadline (March 16) is a mandatory requirement
  ※ Even one day late reduces the deduction from 650,000 yen to 100,000 yen
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□ Store a copy of the tax return (save submission data for e-Tax)
□ Record the acceptance number and receipt notification
□ Save omitted attached documents for 5 years
□ Save books and documents for 7 years (for Blue Tax Return filers)
□ Make payment by the deadline if applicable
□ Confirm the transfer if there is a refund (3 weeks to 2 months)
□ For the 2nd year onwards of housing loan deduction, can be handled via year-end adjustment
  (Submit the "Special Deduction for Housing Loans, etc. Return" received from the tax office to your employer)
□ Handle any required consumption tax notifications
  (e.g., notification of election of simplified taxation, shortening of taxable period, etc.)

---
step: 9
skill: submit
status: completed
completed_at: "{current date YYYY-MM-DD}"
fiscal_year: {tax_year}
---

undefined