# Building a Tokenized Yield Strategy Vault on Kaia with ERC-4626

**URL:** <https://devforum.kaia.io/t/building-a-tokenized-yield-strategy-vault-on-kaia-with-erc-4626/9013>\
**Category:** Kaia\
**Created:** [12월 19, 2025, 5:02오전 UTC](https://devforum.kaia.io/t/building-a-tokenized-yield-strategy-vault-on-kaia-with-erc-4626/9013 "2025-12-19T05:02:16Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![sean.lin](https://yyz1.discourse-cdn.com/flex035/user_avatar/devforum.kaia.io/sean.lin/32/3173_2.png) [@sean.lin](https://devforum.kaia.io/u/sean.lin)\
**Post date:** [12월 19, 2025, 5:02오전 UTC](https://devforum.kaia.io/t/building-a-tokenized-yield-strategy-vault-on-kaia-with-erc-4626/9013/1 "2025-12-19T05:02:16Z")

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![20251209_ERC4626 Article (EN)](https://canada1.discourse-cdn.com/flex035/uploads/klaytn/original/2X/e/ea9a60c4a98f20e68da793c462e9e2f2b9c010a2.jpeg)

**TL;DR**  
ERC-4626 standardizes vault behavior (shares + accounting + deposit/withdraw lifecycle). This tutorial walks through building a simple ERC-4626 vault on Kaia and extending it into a yield strategy pattern.

**What this tutorial covers**

- **ERC-4626 core lifecycle:** deposit / mint / withdraw / redeem + conversions (convertToShares, convertToAssets)

- **Vault accounting:** how shares map to assets, and where strategy logic should live

- **Strategy example (practical pattern):** taking an ERC-4626 vault and wiring it into a “do something with assets” flow (e.g., DEX liquidity / LP-style mechanics)

- **Testing workflow:** Foundry setup + realistic testing approach (including forked-state style testing)

**Why this matters to builders**

- **Composable integrations:** vaults expose a consistent interface → easier to plug into apps, dashboards, and other DeFi lego

- **Cleaner app logic:** your app can treat vault shares as a standard token + rely on predictable entry/exit paths

- **Easier iteration:** you can evolve strategy logic without changing the surface area integrators depend on

Read the full Tutorial: [https://medium.com/kaiachain/building-a-tokenized-yield-strategy-vault-on-kaia-with-erc4626-b7163eb8cc28](https://medium.com/kaiachain/building-a-tokenized-yield-strategy-vault-on-kaia-with-erc4626-b7163eb8cc28)

**Questions / discussion**  
If you’re building a vault or integrating one, drop questions here — especially around vault accounting, share math, and where you’d place strategy-specific logic.

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<div class="post-metadata">

**Author:** ![sean.lin](https://yyz1.discourse-cdn.com/flex035/user_avatar/devforum.kaia.io/sean.lin/32/3173_2.png) [@sean.lin](https://devforum.kaia.io/u/sean.lin)\
**Post date:** [12월 23, 2025, 8:00오전 UTC](https://devforum.kaia.io/t/building-a-tokenized-yield-strategy-vault-on-kaia-with-erc-4626/9013/2 "2025-12-23T08:00:28Z")

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![4626 infographic](https://canada1.discourse-cdn.com/flex035/uploads/klaytn/original/2X/6/6d409a4a1baaf9e6d87b8b2b74911d3a392c4bb6.jpeg)

Concrete scenario: you ship a **tokenized yield strategy vault** with Strategy A, but later want to switch to Strategy B (or add multiple strategies) **without forcing integrators to change anything**.

Things to design for:

- Keep the **ERC-4626 surface area stable** (deposit/mint/withdraw/redeem) and isolate strategy logic behind an adapter/module.
- Treat “strategy swaps” as a first-class flow: define who can switch, how funds are migrated, and what happens mid-epoch.
- Protect share accounting: if the strategy changes, **shares shouldn’t become unpredictable** (watch decimals, rounding, and edge-case withdrawals).
- Make the “integration contract” boring: integrators should only need the vault address + standard functions, not strategy-specific hooks.

Read the tutorial: [https://medium.com/kaiachain/building-a-tokenized-yield-strategy-vault-on-kaia-with-erc4626-b7163eb8cc28](https://medium.com/kaiachain/building-a-tokenized-yield-strategy-vault-on-kaia-with-erc4626-b7163eb8cc28)

If you’re planning multi-strategy vaults, drop your intended strategy types here (lending / LP / LST / etc.), and we’ll consolidate patterns in the next follow-up.