Independent resource — not affiliated with Matter Labs or ZKsync.
Deadline: zkSync Lite will freeze permanently on May 4, 2026. Withdraw your funds to Ethereum mainnet before then.

zkSync Tax Software Compared

Based on L2 support and user feedback from forums.

Koinly

Best for zkSync
  • zkSync Era support — native integration for the main zkSync network
  • 200+ blockchains — great if you use multiple L2s and chains
  • Bridge transaction handling — can mark transfers to avoid false gains
  • 900+ exchange integrations — connect CEX and DEX activity
Try Koinly →

Alternative: CoinLedger

  • EVM-compatible chain support including zkSync Era
  • Clean interface for reviewing transactions
  • Manual merge tool for bridge transaction matching
  • Fewer total blockchain integrations than Koinly
Try CoinLedger — code: CRYPTOTAX10 →

Both tools support zkSync Era. Choose based on your overall chain usage and preferences.

zkSync Tax Issues to Know

ZK Token Airdrop (June 2024)

The ZK airdrop distributed 3.675 billion tokens to eligible users. If you claimed, it's taxable as ordinary income at the fair market value on your claim date. The claim deadline was January 3, 2025 — unclaimed tokens were returned to the protocol. Check eligibility and claim status at ZK Nation.

zkSync Era vs zkSync Lite

zkSync Era (launched March 2023) is the main network with full smart contract support — this is where most DeFi activity happens. zkSync Lite is an older, simpler network for payments that will freeze permanently on May 4, 2026 — block production will stop entirely. If you have funds on Lite, withdraw them to Ethereum mainnet before that date. All three major tax tools (Koinly, CoinLedger, and Summ) support Lite for historical data import, so your past transactions will still be accessible for tax reporting.

Bridge Transactions

Moving ETH or tokens from Ethereum mainnet to zkSync Era is typically not a taxable event if you're transferring to yourself. However, tax software may incorrectly flag these as disposals. Use the "mark as transfer" feature to link the send and receive, avoiding phantom capital gains.

Security Incident (April 2025) — Resolved

In April 2025, a compromised admin account led to 111 million unclaimed ZK tokens being minted from the airdrop contract. The incident is now fully resolved — the hacker accepted a 10% bounty and returned approximately $5.7M to the ZKsync Security Council within a 72-hour safe harbor window. A post-mortem was published and the vulnerability has been patched. If you were affected, document everything carefully and consult a tax professional about any implications.

Etherscan Support Dropped (January 2026)

As of January 7, 2026, zkSync dropped Etherscan support. All transaction data is now available exclusively through the native ZKsync Explorer. Tax tools that previously pulled data via Etherscan have updated to use the native explorer API.

FAQ

How do I report zkSync Era transactions for taxes?

Connect your zkSync Era wallet address to tax software like Koinly or CoinLedger. Both support zkSync Era as an EVM-compatible L2. Make sure to also import your Ethereum mainnet wallet to capture bridge transactions.

Is the ZK token airdrop taxable?

Yes. The ZK airdrop (June 2024) is taxable as ordinary income at the fair market value when you claimed it. The claim deadline was January 3, 2025. This value becomes your cost basis for future capital gains calculations.

How are bridge transactions taxed?

Bridging from Ethereum to zkSync Era is generally not taxable if you're transferring to your own wallet. Tax software may flag these as disposals — mark them as transfers to avoid false gains.

What's the difference between zkSync Era and zkSync Lite?

zkSync Era (launched March 2023) is the main network with full smart contract and DeFi support. zkSync Lite is an older payment-focused network that will freeze permanently on May 4, 2026. Withdraw any Lite funds to Ethereum mainnet before then. All three major tax tools support Lite for historical data import.

Sources

Last updated: March 2026