DeFi Taxation for Estonian Businesses

The complete tax event sequence for a Uniswap V3 liquidity position is: (1) Deposit: if treated as disposal (conservative), you have a disposal of both tokens at their FMV at deposit — gain or loss vs their cost basis; (2) LP position NFT received: cost basis = total FMV of deposited tokens; (3) Trading fees earned: income accrues throughout the holding period — under Uniswap V3, fees are not auto-compounded but accumulate in the position; claim events (when you collect fees) are income recognition events at FMV at collection time; (4) Withdrawal: disposal of the LP NFT position at the FMV of tokens received on withdrawal — gain vs the cost basis established at deposit; (5) Gas fees for deposit, fee collection, and withdrawal: each is a small disposal of ETH at the transaction gas price. For a 3-month position, you typically have 1 deposit event (possibly taxable), multiple fee collection events (income), and 1 withdrawal event (disposal). Total taxable events: probably 5–15 depending on how often you collected fees.

Yes — for Estonian individuals, the receipt of CRV and CVX tokens is taxable income at their fair market value on the date of receipt, regardless of whether you sell them. Each reward claim is a taxable event. The FMV at receipt becomes the cost basis for those tokens, so if you later sell them at the same price, no additional gain arises. If the price falls after receipt, selling creates a capital loss (against the FMV-at-receipt cost basis). For an Estonian OÜ, the income accrues as revenue — no immediate tax, but it is recorded as income in your monthly bookkeeping. The token accumulation increases retained earnings in the OÜ, which are taxed only on distribution. The practical challenge for both structures is tracking the FMV of every reward claim — particularly if rewards auto-compound or are claimed infrequently, requiring batch pricing.

This is genuinely uncertain under Estonian tax law as EMTA has not published specific guidance on collateralised lending. The two positions: conservative (treat deposit as disposal of ETH at FMV — you have a taxable gain on your ETH if it has appreciated; the DAI received is a loan liability not income); non-disposal (retain ETH’s economic exposure; no disposal until you actually sell the ETH or are liquidated). Most Estonian crypto tax practitioners currently apply the non-disposal position for Aave/Compound collateral deposits on the grounds that you retain economic exposure and redemption rights. However, this is not a settled position. For large positions, applying for an EMTA advance ruling is strongly advisable. One thing is certain: if your ETH collateral is liquidated by Aave, that liquidation is definitely a disposal — gain or loss vs your original ETH cost basis at the liquidation price.

Moving assets to Arbitrum via the official Arbitrum Bridge is generally treated as a non-disposal administrative transfer — you are moving your own assets to a different location, not selling them. The cost basis of your ETH (or other tokens) follows the asset to Arbitrum. Your subsequent DeFi transactions on Arbitrum (swaps, liquidity provision, yield farming) all have the same tax treatment as if you had done them on Ethereum mainnet — each swap is a disposal, each reward is income, etc. When you bridge back to Ethereum mainnet via the official Arbitrum bridge, this is also treated as a non-disposal. The gas fees you pay in ETH for bridging (both directions) are small disposals of ETH at the current gas cost. The key advantage of L2 for tax purposes: lower gas fees mean fewer gas-fee disposal events and lower tracking complexity compared to mainnet, even though the core transaction tax treatment is the same.

Protocol fee revenue in your own token is income at the fair market value of the token at the time the fees are earned. Even though you are receiving your own token, the economic substance is income — you are collecting fees from protocol users and receiving assets with value. The token received is recorded as a crypto asset (IAS 38 — own token production); the income is recorded as revenue (similar to a company receiving payment for services in its own shares, which would be recorded at FMV). The subsequent accounting for those tokens depends on your classification: if held in treasury, they are treasury assets at FMV; if immediately burned, the burn reduces the outstanding token supply. For Estonian OÜ tax purposes: this fee revenue increases retained earnings without immediate corporate income tax — tax arises only on distribution. Ensure your chart of accounts has a clear revenue account for protocol fee income (distinct from token sale proceeds) and that each fee collection event is recorded at the correct FMV at the time of collection.