Disclaimer & Advertising Policy

Update: September 29, 2026

• The content on JPViva is personal experience and synthesized information for reference. This is not tax, insurance, investment, legal, or visa advice.
• The writers of JPViva are not licensed consultants (such as 税理士, 社会保険労務士, 行政書士, or 弁護士).
• Laws, tax rates, and insurance premiums in Japan change annually. Articles and calculators state the applicable year and cite official sources. Before making decisions, please verify with relevant agencies (税務署, 市区町村役所, 年金事務所, ハローワーク) or licensed professionals.

• Calculators follow general rules and the numbers you enter. They do not cover every special case.
• The actual numbers are determined by companies, tax offices, and local governments through salary slips, 年末調整, 確定申告, or 住民税 notices.
• Calculators run in your browser and do not save your entered numbers (see Privacy Policy).

Articles on stocks, funds, NISA, or iDeCo share what the writers have done. They are not recommendations to buy or sell a specific product. Prices may decrease, and you may lose your principal. Past performance does not guarantee future returns.

Opening hours, prices, and menus may have changed since the article was written. Please check the official website of the store or location before visiting.

JPViva links to websites of government agencies, companies, and social networks. JPViva is not responsible for the content of those sites.

• Some articles and pages contain affiliate links from affiliate service providers (ASP). When you purchase goods or sign up for services through these links, JPViva may earn a commission.
• How JPViva marks them:
  • Articles or pages with affiliate links or sponsorship display a “PR” label at the beginning of the content, along with the statement “This article contains advertising/affiliate links (PR).” (pages use the word “page”).
  • Affiliate links have the rel="sponsored" attribute for search engines to recognize.
  • Sponsored articles, or posts introducing products and services gifted to the writers, clearly state the sponsor’s name in the post itself, in addition to the “PR” label.
  • Social media posts with advertising state “PR” or “advertising” in the main content itself, not just in hashtags or comments. For videos, the label is displayed throughout the video whenever possible.
• Basis: As of October 1, 2023, advertisements that are difficult for viewers to recognize as corporate advertising are considered violations of the 景品表示法 (regulations against stealth marketing, known as ステマ規制). The entities subject to this regulation are the advertisers (広告主). JPViva continues to mark them clearly so readers always know what is an advertisement.
• Contact for cooperation and advertising: hi@jpviva.com.