> For the complete documentation index, see [llms.txt](https://osige.gitbook.io/osige-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://osige.gitbook.io/osige-docs/osige-features/jose-on-tax.md).

# Jose-On Tax Analysis

Jose-On is a tax-analysis screen built into every profile. It shows what an annual crypto tax report for a DEX user could look like under Korea's planned virtual-asset income tax framework. You can view realized gains and losses, cost basis, holdings, and estimated tax in one place.

{% hint style="warning" %}
**Jose-On is a testnet product simulation.** The current screen runs on sample data and is labeled `TESTNET MOCK` in the UI. It models regulations planned to take effect on **January 1, 2027** and is not connected to any actual tax liability. It is an informational product concept only: **not tax advice, a tax return, or a document for submission.** Testnet activity has no tax significance.
{% endhint %}

![Jose-On tax analysis tab showing yearly metrics and the monthly gains chart](/files/ThEF6N2KFZJ16M8kY4Ak)

## Where to find it

Open a profile and select the **Jose-On** tab. You can choose a **tax year** (2024, 2025, or 2026) at the top, and a summary card also appears in the profile side rail.

## What the analysis shows

**Key metrics:** Four tiles summarize realized gains, realized losses, annual net gains, and estimated tax under the 2027 framework.

**Gains and losses by period:** A monthly chart displays realized gains and losses throughout the year.

**Cost-basis method:** Gains and losses from wallet and DEX activity are calculated using **FIFO** (first in, first out) and shown with the annual deduction.

**Balance sheet:** Unrealized holdings, meaning tax lots that have not yet been sold, are shown by asset with cost basis and unrealized gains and losses.

**DEX tax events:** The event ledger shows the date, amount, proceeds, cost basis, and gains or losses for buys, sells, liquidity additions, liquidity removals, and fee collections. Buy and sell direction is determined against stablecoins (USDC/USDT), and the **Taxable only** filter shows only events that affect tax.

## Tax model

The simulation follows a simplified version of the announced Korean tax framework:

* The portion of annual net gains above the **KRW 2.5 million deduction** is taxable.
* It applies a combined **22%** rate consisting of 20% income tax and local income tax.
* Display values are converted using a fixed reference exchange rate.

Actual taxation varies by final legislation, your overall financial circumstances, and your filing method.

## Export a report

Select **Export tax report** in the side rail to open a print-ready report with the same metrics and event table. You can save it using the browser's *Save as PDF* option, and exported documents currently retain the testnet-mock label.

## Why we built it

When Korea's virtual-asset taxation takes effect, calculating annual gains and losses will become a real need for DEX users. Most DEXs do not provide this functionality. Jose-On tests a product answer: calculating readable, exportable annual analysis from data already indexed where trading happens.

Share your feedback on features a production version should include in the [community](/osige-docs/osige-features/profiles-and-community.md).


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://osige.gitbook.io/osige-docs/osige-features/jose-on-tax.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.