Here are a few options for a WordPress post tag description, depending on the level of detail you want to include:

**Option 1: Concise and Direct**

* **Description:** 了解如何計算個人所得稅及相關稅務知識。 (Learn how to calculate personal income tax and related tax knowledge.)

**Option 2: Slightly More Descriptive**

* **Description:** 針對計算所得稅的指南、稅務規則、稅率，以及如何申報個人所得稅。 (Guides, tax rules, tax rates, and how to file individual income tax related to calculating income tax.)

**Option 3: Focusing on Practical Application**

* **Description:** 分享計算所得稅的實用技巧和常見問題解答，幫助您輕鬆應付稅務申報。 (Sharing practical tips and frequently asked questions for calculating individual income tax, helping you to easily handle tax filing.)

**Option 4: Emphasizing Education**

* **Description:** 深入探討計算所得稅的各種方面，包括稅率、減免項目、以及最新的稅務法規。 (In-depth exploration of various aspects of calculating income tax, including tax rates, deductions, and the latest tax regulations.)

**Which one to choose?**

* Consider what kind of content you’ll be posting under this tag. If the posts will be very basic, choose a simpler description. If you’ll be offering more in-depth analysis or advice, choose a more descriptive one.
* Remember that the description is for your users and search engines. Keywords like “計算所得稅,” “稅務,” “稅率,” and “申報” are helpful for SEO.

Regardless of which you choose, make sure the description is relevant to the content you are tagging and will help your audience understand what the tagged posts are about.