> For the complete documentation index, see [llms.txt](https://cee-systems.gitbook.io/cee-fare-builder/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cee-systems.gitbook.io/cee-fare-builder/fare-builder-user-manual/user-guide/fare-calculation-date-modification.md).

# Fare Calculation Date Modification

If the **Fare Calculation Date** is changed, Fare Builder automatically updates conversion rate, tax table, and ROE. The **Fare** or **EQU** are recalculated while retaining manually entered value. **Total Taxes** and **Ticket Total (TTL)** are updated, too.

Example: Date change from 30NOV24 to 29NOV24:

<figure><img src="https://lh7-rt.googleusercontent.com/docsz/AD_4nXc_Gm1TkC_s7BHWmJqoMzhi9kwKaL7FJZAosyI0KfwxARumAZlNdflsnI50MElNOHasH_F64wxf5Q1a393PWHpA8h5_dEVe7NDW9c7mAyusibU9NIMkkOfhmr7hS9Jh-HZvmS1iIg?key=K69gCO3qdKM_QTIzDuLFm2Rn" alt=""><figcaption></figcaption></figure>

<figure><img src="https://lh7-rt.googleusercontent.com/docsz/AD_4nXdFBs-kPp8CKWkRkJ3RONnQzoreK0ygDcM3wdICxk3DC-1_afYmYw5stDuZwB-1NE-ckavvMsS8JGdcWTK_wGijJW-ldMQcfgmw3kB-AGZodAsb5FnR32NA5S7JT3zZS0U4FcDZ?key=K69gCO3qdKM_QTIzDuLFm2Rn" alt=""><figcaption></figcaption></figure>