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DeFi (Decentralized Finance) removes banks from the equation. Instead of trusting a bank with your money, smart contracts — code running on a blockchain — handle everything. No middlemen, no credit checks, 24/7 access. Here's how it works and how to get started safely.
Traditional Finance vs DeFi
| Feature | Traditional Bank | DeFi |
|---|---|---|
| Interest Rate | 1-3% | 5-20% |
| Access | Business hours | 24/7 |
| Approval | Credit check | Instant |
| Control | Bank controls | You control |
| Fees | Hidden fees | Transparent |
| Insurance | FSCS (£85k) | None |
What Can You Do with DeFi?
1. Earn Interest (Much Higher Than Banks)
Popular platforms: Aave (lend crypto, earn interest), Compound (algorithmic lending), Curve (earn on stablecoins).
2. Borrow Money (Without Credit Check)
Deposit crypto as collateral → Borrow stablecoins → Keep your crypto exposure. Interest rates 3-12% vs banks 8-20%.
3. Trade (Without Exchange)
- Uniswap: Swap any token instantly
- PancakeSwap: Same but cheaper fees
- Benefits: No KYC, you control funds, access to 1,000s more tokens
4. Provide Liquidity (Earn Trading Fees)
Deposit crypto into liquidity pools → Earn fees from every trade → Passive income. Example: Deposit ETH + USDC → Earn 0.3% of all trading fees.
Real-World Example: Earning 8% on Stablecoins
- 1Buy £10,000 USDC (stablecoin = £1 each)
- 2Deposit in Aave
- 3Earn 8% = £800/year
- 4Withdraw anytime — that's 4x more than your bank!
Risks of DeFi
- Smart contract risk: Code can have bugs — use audited, established protocols (Aave, Uniswap, Curve)
- Impermanent loss: Price changes can reduce liquidity provider returns — use stablecoin pairs
- High gas fees: Ethereum transactions £5-50 — use Layer 2 solutions (Arbitrum, Polygon)
- No insurance: If protocol is hacked, you might lose funds — only invest what you can afford to lose
How to Start with DeFi (Safely)
- 1Get MetaMask wallet — free browser extension, works with all DeFi platforms
- 2Buy Ethereum — use Coinbase or Binance, buy £100 of ETH to start
- 3Transfer to MetaMask — send ETH from exchange to your wallet
- 4Try Uniswap — swap ETH for USDC (your first DeFi transaction!)
- 5Earn interest — deposit USDC in Aave, earn 5-8% interest
Is DeFi legal in UK? Yes, completely legal. No restrictions on using DeFi platforms. But you DO pay tax on earnings — interest = income tax, gains = capital gains tax.
START TODAY
Get Started with DeFi
First, buy Ethereum on a UK exchange, then connect to DeFi platforms
Compare Exchanges →Sento earns a referral if you click — never affects our recommendations.
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Sento earns a referral if you click through our links — this never affects our recommendations. Prices and details correct at time of publication. Updated February 2026.