What is Ethereum?

Ethereum is the open-source blockchain that goes beyond payments alone. It is a world computer that runs programmable smart contracts and that hosts thousands of tokens and applications.

More than digital currency

Ether (ETH) is the native crypto coin that powers transactions and applications. Unlike Bitcoin, Ethereum was designed from day one to run programmable logic.

Smart contracts

Code is placed on-chain and runs autonomously. Once conditions are met, the contract executes actions, think swaps, loans or NFT minting.

Decentralized apps

Users interact with dApps for DeFi, NFTs, gaming or infrastructure. These applications use standards such as ERC-20 and ERC-721.

Proof-of-Stake network

Since the Merge, Ethereum uses validators that stake ETH to validate transactions. Staking rewards can be taxable for Belgian users.

How does Ethereum work in broad terms?

An Ethereum wallet consists of an address that sends or receives ETH and calls smart contracts. Every action is paid for in gas, so you see exactly what was executed.

Wallets & accounts

Every transaction is linked to an address. Cryptotax automatically pulls in the full historical transactions so you have an overview per address.

Smart contract execution

A transaction can contain multiple contract calls. Our parser recognizes when swaps, staking, NFT mints or other actions take place within a single hash.

Gas as fuel

Gas fees are paid in ETH and often form a deductible cost. We log the gas price paid and link it to the right transaction.

Upgrade friendly

Important network changes such as the Merge or Shanghai can affect staking and payouts. Cryptotax takes this context into account in your report.

Why this matters for your Belgian tax return

Taxable moments on Ethereum look different from simple buys or sells. That is why our platform reconstructs every interaction and labels the tax impact.

Sending or receiving ETH

Transfers are grouped automatically. We distinguish deposits, withdrawals and self-transfers so your cash flow is clear right away. Read more about transfer matching →

Token swaps & DeFi activity

Detection of ERC-20 transfers and liquidity pool activity.
Swaps via Uniswap, SushiSwap and other DEXs are flagged as potential sales.
Receipts from lending protocols or yield farms are tracked as income.

Smart contract analysis

We read on-chain logs so interactions such as bridges, NFT mints or staking contracts end up correctly in your report.

Gas fees & cost basis

Every gas fee is linked to the underlying action. That way your accountant can correctly determine whether it is a cost or part of the cost basis.

Taxable events

Cryptotax flags sale moments, staking rewards received, airdrops and other income streams that are relevant for Belgium.

Context around upgrades

We take network upgrades and forks into account so that staking unlocks or protocol changes are interpreted correctly.

Key Ethereum concepts

A quick glossary to understand your reporting and to complement blogs or knowledge articles.

EVM

The Ethereum Virtual Machine runs smart contracts and ensures that every node produces the same results.

DApps

Decentralized applications that run on Ethereum and often connect your wallet directly to smart contracts.

ERC standards

Token standards such as ERC-20 (fungible) and ERC-721 (NFT). They determine how transfers appear in the blockchain logs.

Proof-of-Stake

Validators stake ETH to validate blocks and receive rewards in return. These rewards can be taxable as miscellaneous income.

How Cryptotax helps with your Ethereum wallet

From address to export: within minutes you have a Belgian-compliant report.

1

Enter your wallet address

We use reliable nodes to pull in your full transaction history. Both ETH movements and token transfers are detected.

2

Analyze contract interactions

Our engine interprets logs and recognizes swaps, staking, DeFi and NFT actions. Gas fees are linked to the right events.

3

Flag tax events

We label sales, income and capital movements according to Belgian guidelines. You get insight into net result, costs and items to report.

4

Export for Tax-on-web

Generate reports that your accountant or Tax-on-web can use directly. Optionally link your transactions to blogs or knowledge articles for extra context.

Frequently asked questions about Ethereum and taxes

Do I have to report every ETH transaction?

You have to report every taxable event. Cryptotax filters internal movements and focuses on sales, income or significant transfers so your records stay clear.

How do I handle gas fees?

Gas fees are automatically included in the report. Depending on your situation, they can be booked as a cost or included in the cost basis of a transaction.

Does Cryptotax also detect tokens and NFTs?

Yes. We read ERC-20, ERC-721 and other relevant standards. This lets you see swaps, NFT mints and token transfers clearly, along with their potential tax impact.

Related integrations

Discover our other blockchain integrations that work seamlessly with Ethereum.

Ready to automate your Ethereum tax work?

Start today with a free scan. Within minutes you know how many taxable events your Ethereum wallet contains and which steps your accountant needs to take.

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Ethereum integration for Belgian tax reporting