tax return; income tax return
Official document filed with tax authorities to report income and calculate tax liability.
Every year during tax filing season, I submit my tax return to the tax office.
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).