Here’s a description for the WordPress post tag “tax identification number” in Traditional Chinese, optimized for search and clarity:

**Description Options:**

**Option 1 (Short and Concise – Best for efficient tagging):**

> **統編 (Tǒngbiān)** – 所得稅識別號碼。 (Unified Business Number/Tax ID, applicable to income tax)

**Why this works:**

* **Direct translation:** Uses the very common and well-understood abbreviation 統編 (Tǒngbiān) for “tax identification number.”
* **Clear context:** Explains what the Tag covers (for general tax purposes)

**Option 2 (More Informative – for wider context):**

> **統一編號 (Tǒngyī biānhào) – 稅務識別碼 (Shuìwù shǐbié mǎ)** – 在台灣，指公司或個人用於稅務申報的編號，又稱**統編**。適用於所得稅、營業稅等稅務項目。 (Unified Number, Tax ID – In Taiwan, it refers to the number used by companies or individuals for tax filing, also known as Tǒngbiān. Applicable to income tax, business tax, and other tax-related items.)

**Why this works:**

* **Multiple terms:** Uses the formal term 統一編號 (Tǒngyī biānhào) and the more general 稅務識別碼 (Shuìwù shǐbié mǎ), covering a wider range of instances.
* **Geographic context:** Pinpoints the practical use of the tag in Taiwan if relevant to your blog audience.
* **Keywords:** Includes essential keywords, such as 所得稅 (income tax) and 營業稅 (business tax) for broader SEO coverage.
* **Highlights the abbreviation**: Emphasizes 統編 for common usage.

**Considerations for Choosing the Best Option:**

* **Your Blog’s Audience:** Who are you writing for? If your primary audience is in Taiwan or other parts of the Chinese-speaking world, with a strong emphasis on the Taiwanese context, option 2 would be more suitable. If your audience is more general, option 1 provides a more concise, yet accurate description.
* **Purpose of the Tag:** What kind of content will use this tag? If your blog explains how to do taxes, then option 2 with its detailed explanation is most fitting.
* **Word Count and Search Engine Optimization (SEO):** Shorting descriptions can be better for internal linking. Consider the length limits applied by your theme. If searching is important, option 2 has an obvious advantage.

**To implement this in WordPress:**

1. **Go to your WordPress admin dashboard.**
2. **Navigate to Posts > Tags.** (or “Tags” under the “Post” menu).
3. **Create a new tag.**
* **Name:** “統一編號” or “統編” (whichever you choose best)
* **Slug:** Choose a URL-friendly version of the name, such as `tongyibianhao` or `tongbian`.
* **Description:** Paste the description you chose above (either Option 1 or Option 2).
4. **Click “Add New Tag”.**

Now, when you add this tag to your posts, the description will be available to help readers (and search engines) understand what the tag represents. Good luck!