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Part-Time Income Tax: Zero Under ¥105,000 a Month in 2026
The ceiling for paying nothing rose from ¥88,000 to ¥105,000 a month, built from an employment income deduction of ¥54,167 plus a basic deduction of ¥48,334. Monthly withholding still runs on the ¥1,230,000 standard while the December year-end adjustment uses ¥1,780,000 - a double standard unique to 2026. Tick the working student box and the ceiling reaches ¥137,000; a second job on Column B pays about ¥1,530 even on ¥50,000 a month.