A deduction taken in advance (e.g., tax, insurance, or other payments automatically withheld from wages or payments).
所得税は毎月の給料から天引きされる。
Income tax is withheld from the monthly salary.
保険料は天引きにしているので支払いを忘れない。
My insurance premiums are deducted automatically, so I don't forget to pay them.
家賃を給料天引きにする手続きをした。
I arranged for the rent to be deducted directly from my salary.