base period
base periods
For consumption tax, the business year two years earlier. Its taxable sales decide whether a business owes consumption tax — a new company has none.
Whether a business must pay consumption tax depends on its taxable sales in the base period, for a company usually the business year two years earlier.
A newly established company has no base period in its first two years. With capital under 10 million yen it is then usually exempt — unless, among other exceptions, it registers as a qualified invoice issuer or belongs to a group with more than 5 billion yen in revenue (for tax periods from 1 October 2024).
Sources: https://www.nta.go.jp/taxes/shiraberu/taxanswer/shohi/6503.htm