Official Sei logo

Sei (SEI): price and where to buy in Spain

$0.04154939

€0.03621636 at the exchange rate of September 16, 2026, 19:00

Last 30 days, one price per day in USD.

ATH (all-time high)

$1.14

% from its ATH

-96.35 %

% price change, 24 hours

-3.98 %

% price change, 1 hour

0.41 %

Market data updated on September 16, 2026, 16:29 (UTC).

How much is Sei (SEI) worth today?

The current price of Sei is $0.04154939 USD. At the exchange rate of September 16, 2026, that comes to €0.03621636. Its all-time high (ATH) was $1.14. It is now trading 96.35% below that high. Over the last 24 hours its price has moved -3.98%.

The market capitalisation of Sei is $279,469,231 USD, which reflects the total value of every coin in circulation.

What if Sei had Bitcoin's market cap? Work out what each SEI would be worth with the market cap calculator.

Where to buy Sei in Spain

Since 1 July 2026 only platforms authorised under MiCA may operate in Spain. These ones are and have the pair open — two different things, and both worth checking. You can verify the authorisation yourself in the register we keep up to date:

Is this your first purchase? Before opening an account, read how to buy cryptocurrency in Spain step by step: the right order, what they will ask you for and what you pay extra if you press the wrong button.

  • Bit2Me — SEI/EUR. You can pay in euros. Bitcoinforme S.L., authorised by Comision Nacional del Mercado de Valores (CNMV) since 10/2025.
  • Bitvavo — SEI/EUR. You can pay in euros. Bitvavo B.V., authorised by Netherlands Authority for the Financial Markets (AFM) since 06/2025.
  • Kraken — SEI/EUR, SEI/USD. You can pay in euros. Payward Europe Solutions Limited, authorised by Central Bank of Ireland (CBI) since 06/2025.
  • Coinbase — SEI/USD. No euro pair: you would have to swap into another coin first, and that swap is taxable in Spain. Coinbase Luxembourg S.A., authorised by Commission de Surveillance du Secteur Financier (CSSF) since 06/2025.

Being authorised does not mean they are the best option for you: it means they may operate legally. Fees and service are something you have to look at separately. This is not investment advice.

Availability checked on 14/09/2026. We cannot say either way for Bitpanda: it does not publish its list of trading pairs.

And when you sell at a profit, it has to be declared: work out what you pay in Spanish income tax using the FIFO method the tax office requires. And if you hold more than €50,000 on platforms outside Spain, you also have to file form 721, which is informational and costs nothing.

What is Sei

Sei trades under the ticker SEI and ranks #139 by market capitalisation in the CoinGecko catalogue. It runs on its own blockchain. CoinGecko lists it under smart contract platforms, decentralised finance (DeFi) and layer 1 chains.

Project description from CoinGecko

Sei is a high-performance Layer 1 blockchain that scales the EVM with parallelized execution, enabling faster transactions, low fees, and seamless smart contract deployment. Sei removes traditional blockchain bottlenecks while maintaining full Ethereum compatibility. The upcoming Giga upgrade will deliver 50x improvements in EVM throughput, optimizing execution, consensus, and storage to push blockchain performance to web2 levels.

Other cryptocurrencies you may be looking at

Website

https://www.sei.io https://blog.seinetwork.io/

Blockchain explorer

https://seistream.app https://sei.explorers.guru https://atomscan.com/sei

Social media

Categories

Smart Contract Platform | Decentralized Finance (DeFi) | Layer 1 (L1) | Parallelized EVM | Coinbase Ventures Portfolio | Multicoin Capital Portfolio | GMCI Layer 1 Index | Delphi Ventures Portfolio | Circle Ventures Portfolio | OKX Ventures Portfolio | GMCI Index | Sei Network Ecosystem | World Liberty Financial Portfolio | Made in USA |

BTC equivalent

1 sei = 0.0000005484 BTC

See Sei price scenarios

Frequently asked questions about Sei

Sei is a high-performance Layer 1 blockchain that scales the EVM with parallelized execution, enabling faster transactions, low fees, and seamless smart contract deployment. Sei removes traditional blockchain bottlenecks while maintaining full Ethereum compatibility. The upcoming Giga upgrade will deliver 50x improvements in EVM throughput, optimizing execution, consensus, and storage to push blockchain performance to web2 levels.

Four steps: open an account with a provider authorised to operate in Spain, verify your identity, deposit euros by SEPA transfer and buy Sei in the matching pair. If you plan to hold for a long time, consider withdrawing to a wallet you control: moving your coins to your own custody is not a sale, so it is not taxed. Selling Sei at a profit is, and you can work out how much.

You can buy it with euros on Bit2Me, Bitvavo and Kraken (SEI/EUR). It also trades on Coinbase (SEI/USD), but with no euro pair: you would have to swap into another coin first, and that swap is taxable in Spain. Checked on 14/09/2026. We cannot say either way for Bitpanda: it does not publish its list of trading pairs.

The all-time high of Sei was $1.14. It currently trades 96.35% below that level.

1 SEI is worth 0.0000005484 BTC at the current rate.
Sei

Price scenarios

What distance Sei would have to cover to reach its historical reference points.

See scenarios ↓

Sei price scenarios

Sei trades today at $0.04154939. Its all-time high was $1.14, reached on March 15, 2024. Going back to that level would mean a rise of 2,643.7% from the current price, that is, multiplying it by 27.44.

At the other end, its all-time low was $0.03828368 on August 18, 2026: from there the price has multiplied by 1. That path already happened and says nothing about the next one.

Recent path

Sei price change over different periods.
PeriodChange
24 hours down -3.98%
7 days down -15.42%
30 days up +3.46%
1 year down -87.05%

Why you will not find a price prediction here

There is no method that reliably predicts the price of a cryptocurrency. It depends on regulation, on adoption, on interest rates, on the decisions of a handful of very large firms and on market sentiment — none of which follows from today's price. A figure twelve months out would not be analysis: it would be an invented number that looks like data.

What you can look at is right above, and it is verifiable: the all-time high and low with their dates, how far away each one is and the recent path. With that you decide for yourself, which is rather more than a figure with nothing behind it gives you.

This page is not investment advice. Cryptocurrencies are a volatile asset and are not covered by any deposit guarantee scheme: you can lose all the money you put in. Read up and decide for yourself.

Choose the theme
Choose the accent colour