請問這句英文該怎麼翻譯?
 

If too little is deducted from Dad’s weekly wages for income tax,it results in an underpayment at the end of the year.

如果爸爸一星期的薪水稅扣的太少會造成今年的薪資支付不足~~
我覺得這樣說很奇怪...煩請前輩先進指教一下...感謝

如果爸爸的週薪所得稅預扣太少,會造成年底時不夠錢繳.

如果"拔拔"的周薪所得預扣太少,會造成年底的應繳(所得總)稅額不足
(那是會被罰款的)

如果爸爸每週薪資預先扣除的所得稅太小的話, 在年底時會遇到稅金繳交不足的情況.

此句因為太長了所以有省略, 較完整的句子應該是:
If too little is deducted from Dad’s weekly wages for income tax,it results in an underpayment [in income tax] at the end of the year.