# 開立 B2B 發票時，稅額差 1 元如何調整？

開立 B2B 發票時，系統會預設單價為「**未稅**」。

若以「**未稅**」開立時，系統計算的稅額<mark style="color:red;">「</mark><mark style="color:red;">**有小數點並且為 .5**</mark><mark style="color:red;">」</mark>：

* 在稅額右方會自動顯示<mark style="color:red;">「</mark><mark style="color:red;">**稅額 -1**</mark><mark style="color:red;">」</mark>按鈕，可視合作對象的需求彈性調整。
* 若合作對象沒有特殊需求，則不需要使用此按鈕哦！

<figure><img src="/files/csBEduxjWzzCjijyqfCc" alt=""><figcaption></figcaption></figure>

{% hint style="info" %}
點選「**稅額 -1**」後，如需復原可再點選「**稅額 +1**」，即可還原為系統計算的稅額。
{% endhint %}

<figure><img src="/files/vMSF9mkaRwZLK3wqPtNA" alt=""><figcaption></figcaption></figure>


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