What is DeFi? Finance without a middleman

By SendPay Business · · 2 min read

What is DeFi? Finance without a middleman

DeFi, short for decentralised finance, is a set of financial services such as trading, lending and borrowing that run on public blockchains through smart contracts, instead of through a bank or a company's systems.

How it worksDeFi vs centralised servicesThe risks

How it works

People connect a self-custody wallet to a DeFi app and interact directly with smart contracts. A decentralised exchange, for example, lets users swap one token for another from a shared pool of funds, with prices set by code rather than an order book run by a company.

DeFi vs centralised services

  1. Centralised (CeFi): a company holds your funds, checks your identity and handles support.
  2. DeFi: you keep control of your wallet and deal with code; there's usually no one to call if something goes wrong.

The risks

Bugs in smart contracts have led to large losses, prices can move very fast, and some projects are outright scams. Transactions generally can't be reversed, and in the UK crypto isn't covered by the Financial Services Compensation Scheme.

Where SendPay fits

SendPay doesn't offer DeFi services. SendPay crypto exchange platforms let your customers buy, sell and hold crypto under your own brand, with assets held with regulated partners, and you set your own trading fee.

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Questions people ask

What is impermanent loss?

See how a 50/50 pool compares with holding the two tokens.

Impermanent loss calculator →
What is Ethereum?

The blockchain most DeFi runs on.

What is Ethereum? →
What is a crypto exchange?

How centralised exchanges work.

What is a crypto exchange? →
What is a seed phrase?

The recovery words for a self-custody wallet.

What is a seed phrase? →

Read next

This guide is general information, not legal or financial advice. SendPay Business is a technology company, not a bank, and does not take deposits; regulated services on the platforms are provided by licensed partners. PayPal, Patreon and Substack are named as reference points only and are not affiliated with SendPay Business.