> ## Documentation Index
> Fetch the complete documentation index at: https://guides.koinx.com/llms.txt
> Use this file to discover all available pages before exploring further.

# How to Generate Your Optimism (OP) Tax Report with KoinX

> Connect your Optimism (OP) to KoinX in a few steps to generate and file your Optimism (OP) taxes accurately.

<Info>
  **Wallet Address**  ·  **\~5 min**  ·  ETH · ERC-20 · OP · DeFi  ·  **India** · **100+ countries**
</Info>

## What's covered

<CardGroup cols={2}>
  <Card title="ETH and ERC-20" icon="arrow-right-arrow-left" color="#0066CC">
    ETH and ERC-20 transfers on Optimism.
  </Card>

  <Card title="OP and DeFi" icon="chart-line" color="#0066CC">
    OP token activity and DeFi transactions on Optimism.
  </Card>
</CardGroup>

## Before you start

<CardGroup cols={2}>
  <Card title="Optimism wallet address" icon="wallet">
    Your public Optimism wallet address (starts with `0x`). Never your private key or seed phrase.
  </Card>

  <Card title="KoinX account" icon="sparkles" href="https://app.koinx.com/get-started">
    Free account — no credit card needed.
  </Card>
</CardGroup>

***

## Connect Optimism to KoinX

<Steps>
  <Step title="Open KoinX Integrations">
    Log in to [app.koinx.com](https://app.koinx.com) → **Integrations** → **Add Integration**.
  </Step>

  <Step title="Select Optimism">
    Search for **Optimism** in the integrations list and select it.
  </Step>

  <Step title="Enter your public wallet address">
    Paste your public Optimism wallet address into the address field, then click **Connect**.

    <Warning>
      KoinX only requires your public wallet address. Never enter your private key or seed phrase.
    </Warning>
  </Step>

  <Step title="Wait for sync to complete">
    KoinX fetches all on-chain Optimism transactions. Once sync completes, your entire Optimism history is in KoinX.
  </Step>
</Steps>

<Check>
  **Done.** KoinX has your complete Optimism transaction history.
</Check>

Head to [Tax Reports](https://app.koinx.com/tax-report) to generate your crypto tax report.

***

## Frequently asked questions

<AccordionGroup>
  <Accordion title="Does KoinX support Optimism blockchain?">
    Yes — KoinX supports Optimism integration including ETH and ERC-20 transfers, OP token activity, and DeFi transactions.
  </Accordion>

  <Accordion title="Is my Optimism address the same as my Ethereum address?">
    Yes — Optimism uses the same address format as Ethereum (`0x`…). Your Optimism and Ethereum addresses are identical but exist on separate chains.
  </Accordion>

  <Accordion title="Can I add multiple Optimism wallets in KoinX?">
    Yes — add each wallet address separately under the Optimism integration.
  </Accordion>

  <Accordion title="Does KoinX import full Optimism transaction history?">
    Yes — KoinX fetches your complete on-chain history. Contact KoinX support if you have more than 30,000 transactions.
  </Accordion>

  <Accordion title="Are OP airdrop transactions classified correctly in KoinX?">
    Airdrop transactions are classified as income. Review them in the Transactions view and adjust the classification if needed.
  </Accordion>
</AccordionGroup>

***

## Verify your Optimism transactions

<Steps>
  <Step title="Navigate to the Optimism integration">
    Go to **Integrations** → **Optimism** in KoinX.
  </Step>

  <Step title="Verify transactions are present">
    Confirm ETH, OP token, and DeFi transactions are listed.
  </Step>

  <Step title="Review unclassified transactions">
    Click on any unclassified items to assign the correct category.
  </Step>

  <Step title="Confirm portfolio reflects Optimism holdings">
    Check **Portfolio** to confirm assets appear correctly.
  </Step>
</Steps>

<AccordionGroup>
  <Accordion title="What does a successful Optimism sync look like?">
    The Optimism integration page shows your wallet address, transaction count, and last-synced timestamp.
  </Accordion>

  <Accordion title="My Optimism balance doesn't match my wallet — why?">
    Verify the wallet address and refresh the sync. Contact KoinX support if the mismatch persists.
  </Accordion>

  <Accordion title="Optimism DeFi transactions are unclassified — what do I do?">
    Click on each unclassified transaction and assign the correct category.
  </Accordion>
</AccordionGroup>

***

## Troubleshooting

<AccordionGroup>
  <Accordion title="Optimism transactions aren't showing up after sync">
    **Why this happens:** Incorrect wallet address or sync still in progress.

    **Fix:** Verify the address under **Integrations** → **Optimism**. Remove and re-add if wrong.
  </Accordion>

  <Accordion title="Optimism wallet sync is taking too long">
    **Why this happens:** High DeFi transaction volume on Optimism.

    **Fix:** Wait up to 10 minutes. Remove and reconnect if not resolved.
  </Accordion>

  <Accordion title="DeFi transactions aren't classified correctly">
    **Why this happens:** Complex DeFi protocol structures.

    **Fix:** Re-sync and manually classify remaining unclassified transactions.
  </Accordion>

  <Accordion title="KoinX shows an error for my Optimism wallet">
    **Why this happens:** Temporary node connection issue.

    **Fix:** Click **Reconnect** or remove and re-add the wallet.
  </Accordion>

  <Accordion title="Does reconnecting Optimism wallet create duplicate transactions?">
    No — KoinX deduplicates automatically.
  </Accordion>
</AccordionGroup>

***

## Related integrations

<CardGroup cols={2}>
  <Card title="Ethereum" icon="link" href="/integration/ethereum">
    Connect your Ethereum mainnet wallet.
  </Card>

  <Card title="Arbitrum" icon="link" href="/integration/arbitrum">
    Connect your Arbitrum wallet.
  </Card>

  <Card title="Base" icon="link" href="/integration/base">
    Connect your Base wallet.
  </Card>

  <Card title="Polygon" icon="link" href="/integration/polygon-matic">
    Connect your Polygon wallet.
  </Card>
</CardGroup>

<Card title="Ready to generate your Optimism crypto tax report?" color="#6366f1" icon="rocket" href="https://app.koinx.com/tax-report">
  Turn your Optimism data into an audit-ready crypto tax report.
</Card>