Independent resource — not affiliated with Polygon Labs.

Polygon Tax Software Compared

Based on Polygon-specific support and user feedback from forums.

CoinLedger

Best for Polygon
  • Polygon PoS support — tracked via API (Polygon zkEVM shut down July 2026, see below)
  • Potential Bridges/Trades/Transfers tab — flags and helps fix misclassified ETH ↔ Polygon bridge transactions
  • DeFi coverage — QuickSwap, Aave, Uniswap, Balancer supported
  • MATIC/POL migration may need manual review
Try CoinLedger — code: CRYPTOTAX10 →

Alternative: Koinly

Try Koinly →

Also Consider: Summ (formerly Crypto Tax Calculator)

  • Formerly Crypto Tax Calculator — rebranded 2025
  • Worth a look for DeFi-heavy users on QuickSwap and Aave on Polygon PoS, with strong multi-chain transaction parsing
  • Supports TurboTax, H&R Block, and international tax reports
Try Summ — code: DEFITAX20 →

No tool is perfect — manual review is often needed for bridge transactions and token migrations.

Polygon Tax Issues to Know

MATIC to POL Token Migration

The September 2024 MATIC to POL migration is now 99% complete. The 1:1 swap remains tax-ambiguous — the IRS hasn't issued specific guidance. It could be treated as a non-taxable like-kind continuation (same network, same value) or as a taxable disposal (different contract addresses). Most tax experts lean toward non-taxable, but users should document the swap details (date, value, tx hash) and consult a tax professional.

Bridge Transactions

Bridging assets from Ethereum mainnet to Polygon PoS is generally not taxable. Tax software may misclassify bridges as trades — look for "missing cost basis" warnings and use the bridge merge tool to fix.

Polygon zkEVM Shut Down (July 2026)

Polygon zkEVM's sequencer was sunset on July 1, 2026, and the network is fully shut down. Any unmigrated balances were auto-migrated to Ethereum L1 and are claimable via a dedicated interface. If you held funds or transacted on zkEVM, export your historical transaction history now — tax software support for a defunct chain may be dropped over time. No tool "supporting" zkEVM matters going forward; treat any prior zkEVM activity as closed-chain history to reconcile, not an ongoing integration.

QuickSwap & DeFi Activity

Swaps on QuickSwap, Uniswap, or other DEXs on Polygon PoS are taxable events. LP rewards are taxable as income when received. Aave lending activity on Polygon follows the same tax rules as Ethereum mainnet.

Katana Airdrop for POL Stakers

Katana, a Polygon-incubated DeFi L2, launched mainnet in July 2025 and is airdropping roughly 15% of its KAT supply to POL stakers. Airdropped tokens are taxable as ordinary income at fair market value when received, so POL stakers should watch for and record any KAT distribution. Newer L2s like Katana may not yet be auto-imported by tax software — check before assuming your tool picked it up.

Per-Wallet Cost Basis (IRS Rev. Proc. 2024-28)

Universal cost-basis pooling ended January 1, 2025 under IRS Rev. Proc. 2024-28 — cost basis must now be tracked per wallet/account. If you used a "safe harbor" reasonable allocation method to assign existing basis across wallets, the allocation deadline is October 15, 2026. Consult a tax professional to confirm your allocation is documented correctly.

Form 1099-DA

Centralized exchanges are now issuing Form 1099-DA for tax year 2025 activity, reporting digital asset sales and (in later years) cost basis directly to the IRS. This doesn't cover on-chain Polygon activity in self-custody wallets — you still need tax software or manual tracking for DeFi, staking, and wallet-to-wallet transactions.

FAQ

Does the Polygon network report to the IRS?

No. Polygon is a decentralized network and doesn't report user activity. However, centralized exchanges (Coinbase, Kraken, etc.) do report, and starting 2025, the IRS requires per-wallet cost basis tracking.

Is the MATIC to POL token migration taxable?

Most tax experts agree the September 2024 MATIC to POL migration is not a taxable event — it's a 1:1 token upgrade. Your cost basis and holding period should carry over. However, the IRS hasn't issued specific guidance.

Are bridge transactions from Ethereum taxable?

Bridging assets from Ethereum mainnet to Polygon is generally not a taxable event — you're moving the same asset between networks. However, you should track the transaction for cost basis continuity.

How are QuickSwap LP rewards taxed?

Liquidity provider rewards are taxable as ordinary income when received. The fair market value at receipt becomes your cost basis for future sales.

What happened to Polygon zkEVM?

Polygon zkEVM's sequencer was shut down on July 1, 2026, and the network is fully deprecated. Unmigrated balances were auto-migrated to Ethereum L1 and are claimable through a dedicated interface. If you had zkEVM activity, export your historical transactions before support for the chain fades from tax tools.

Sources

Last updated: July 25, 2026