noun
tax return; income tax return
Official document filed with tax authorities to report income and calculate tax liability.
毎年、確定申告の時期に納税申告書を税務署に提出します。
Every year during tax filing season, I submit my tax return to the tax office.
納税申告書の書き方を税理士に相談した。
I consulted a tax accountant about how to fill out the tax return.
確定申告 refers to the final tax return filing process, while 納税申告書 is the physical document itself.
Compound of 納税 (tax payment) + 申告 (declaration) + 書 (document).