Japan's Religious Corporations Law exempts income associated with worship from both taxation and standing financial disclosure, and Shinto shrines including Ise Grand Shrine generally do not publish their offering income; the only widely reported figure, about 57 billion yen, is a one-time capital fundraising total for the shrine's periodic rebuilding, not an annual income or budget figure.
What would resolve this A change in Japanese religious corporation disclosure requirements, or a voluntary published account from the Jingu Administration Office naming Ise Grand Shrine's own annual offering income or operating budget.
OpenJapanese religious corporation law and Shinto shrine administration, and financial or investigative journalism covering Japan's religious institutions.Philip Brasor and Masako Tsubuku, Shrine Funds: Japan's Religious Sites and Their Undisclosed Cash (Japan Times via Green Shinto, 2018)