武井 道雄武井 道雄

Director, Premium Water Holdings,Inc.

Net worth (est.)
¥177M
#4566 in Japan
Listed shares
Executive pay
—
Not disclosed
Dividends (a year)
¥5.4M
#3828
Total income (est.)
¥5.4M
#5527
Pay + dividends, before tax
Taxes (est.)
¥1.1M
#5440
Income tax ¥831,298 / resident tax ¥276,400
Other assets (est.)
¥8.9M
¥185M with shares
After-tax income 2024–2026, before spending
Inheritance tax (est.)
¥11.7M
#5437
If a spouse and two children inherit in statutory shares (change)

Other assets (est.): the sum of each year's after-tax income (pay + dividends in own name − estimated taxes and social insurance) dividends retained by asset-management companies (less about 20% corporate tax), and proceeds from share sales (the drop in shares from the previous year × share price, less 20.315% tax, or about 30% for asset-management companies), for the years we have data. Spending, real estate, donations and savings from earlier years are not reflected.

Holdings

CompanyHeld bySharesStakePriceValueDividends
Premium Water Holdings,Inc.
2588 · FY ending Mar 2026 · Director
Own name 47,200 — ¥3,741 ¥177M ¥5.4M

By year

YearNet worthPayDividendsTotal incomeTaxes (est.)After tax (est.)Share sales (after tax)
2026¥177M—¥5.4M¥5.4M¥1.1M¥4.3M—
2025¥90.2M—¥3.2M¥3.2M¥648,985¥2.5M—
2024¥101M—¥2.5M¥2.5M¥520,188¥2.0M—

Grouped by the calendar year of each company's fiscal year-end. Years in which the person was not among the top 10 shareholders of a company exclude that company.

Inheritance tax (estimate)

Estate ¥185M = listed shares in own name ¥177M + other assets (est.) ¥8.9M

Total inheritance tax paid: ¥11.7M (6.3% of the estate).

HeirInheritsTaxAfter tax
Spouse¥92.7M¥0¥92.7M
Each child¥46.4M¥5.8M¥40.5M

Japanese inheritance tax, assuming the estate is split in statutory shares. A spouse pays no tax up to ¥160M or the statutory share, whichever is larger. Family size is not in the securities reports, so you can choose it (with no children, parents or siblings also become heirs, so the real figure differs). Business-succession deferrals, lifetime gifts, donations to foundations, debts and other reliefs are not reflected.

Estimates from annual securities reports (EDINET). The English name is romanized automatically and may differ from the spelling the person uses. Methodology · Corrections and removal requests: contact