How to Buy Ethereum

Somewhere today a first-time buyer will pay for ether, watch the order clear, then stare at a wallet showing coins on a network they have never heard of. The buying part is quick, ten minutes, card to coins, most of it spent photographing your own ID. The part that costs people real money is a dropdown most guides never mention.

So this walkthrough covers the four steps, the fees, and the two things ETH buyers actually get wrong: the network choice and gas. It is a how-to, not financial advice.

What you are buying

Ether is the coin and Ethereum is the network it runs on. The network went live on 30 July 2015, and ether has sat second only to bitcoin by size for most of the years since. It is also the network's fuel: every transfer, swap and token sale on Ethereum pays its toll in ETH, and stablecoins such as USDC and USDT ride the same rails as ERC-20 tokens.

The electricity guilt is dated, too: on 15 September 2022 an upgrade called the Merge moved Ethereum from proof of work to proof of stake, cutting energy use by roughly 99.95% on the Ethereum Foundation's estimate. And since 23 July 2024 spot-ETH ETFs have traded on US stock exchanges. Mainstream, then, but still perfectly capable of a 20% drop in a bad week, so buy an amount you would not miss.

Sort the landing spot first

The coins need somewhere to go, which means a crypto wallet: an app on your phone, or an account on a platform that holds coins for you. Custodial means the platform keeps the keys and can reset a forgotten login. Self-custody means you hold the keys through a seed phrase of 12 or 24 words, and nobody can reset anything, ever. Most people start custodial, which is fine, just know which one you are in before money moves.

An Ethereum address is 42 characters long and starts with 0x. Never type one out: copy it, paste it, then read the first four and last four characters back against the source. Malware that swaps addresses on the clipboard exists, and it is a boring way to lose a transfer.

The dropdown that eats coins

Ethereum has helper networks bolted on top of it: layer-2 networks such as Arbitrum, Base and Optimism, built to make transactions cheaper, useful later and confusing on day one. They share Ethereum's 0x address format, so your address looks identical on all of them, which is exactly why platforms make you choose which network a transfer travels on.

Choose a network the receiving side does not watch and the coins will not bounce back like a failed bank payment. Sometimes a support desk can fish them out after a week of tickets, often nobody can. Wrong-network transfers are the classic beginner loss on Ethereum, and avoiding them costs nothing: pick Ethereum mainnet on both ends, sender and receiver, unless you know exactly why you want something else. A screen offering Base mid-purchase is not an invitation to experiment.

The four steps

The service converting your money into ETH is an on-ramp. Banxa is one, running this plumbing since 2014 with more than 100 payment methods across 100-plus countries, in the markets it serves, and the purchase runs like this:

Pick the coin and the network, which means ether, on Ethereum mainnet, for the reasons above.

Enter the amount and paste your wallet address. On Banxa the quoted price locks for roughly 3 minutes, so a quote that sits while you hunt for your card will re-quote at the going rate.

Choose how to pay: cards run roughly 3 to 5% all-in and are fast, and bank transfers cost about 1% and take longer. On a £20 buy the gap is pocket change, on £1,000 it is £20 to £40, which is dinner.

Approve and wait: the first purchase includes KYC, photo ID plus a selfie, and card orders typically complete within about 10 minutes of issuer approval.

One quirk: a declined card usually means your own bank blocks crypto merchants, not that anything failed on the platform. Ring the bank, or pay by transfer instead.

Gas, and why you never spend to zero

Gas is Ethereum's fee for doing anything, and it is paid in ETH. Blocks arrive roughly every 12 seconds, space inside them is priced by demand, and busy hours cost multiples of quiet ones. Since August 2021 an upgrade called EIP-1559 has burned the base portion of every fee, destroying that ETH rather than paying it to anyone.

A card purchase on an on-ramp folds delivery into the quoted price, so gas will not bite you at checkout. It bites afterwards. The day you move coins, swap a token or send USDC anywhere, the network bills you in ETH. A wallet holding tokens but zero ETH cannot afford to move its own money, and people really do end up buying a second round of ETH just to shift the tokens they already own. Park a slice from the first buy and leave it there.

What actually goes wrong

A short list, all seen in the wild.

Wrong network, covered above and repeated on purpose, because it is the one that hurts.

Whole balance spent and nothing kept for gas, which is the stuck-token wallet again.

No test run before moving a serious amount to a new address: send a tenner first, watch it land, then send the rest, which costs two fees and is cheap insurance.

Seed phrase handed over: no platform, and nobody claiming to be support, ever needs those words, and anyone asking is stealing from you, every time.

Keep a note of what you paid and when. Tax treatment varies by country and sits outside this guide, but the record costs you ten seconds and future-you will want it.

Then let it get dull. The second buy skips KYC and takes half the time. By the fifth, the whole ritual is four minutes and produces no stories worth telling, which is the point.