Why DeFi Instead of a Bank?
The bank said no, but an app said yes in 30 seconds. Ben compares the two: a bank deposit is insured up to €100,000, DeFi has no such insurance but works 24/7 and you see everything. A smart contract is like a vending machine, with no human in the loop. The catch: if SOL gets too cheap, the app sells part of your collateral by itself.
A bank in Europe pays 1–3% per year. The same money working in DeFiDeFiDecentralized Finance — financial services without intermediaries, operating through smart contracts.Read the lesson → protocols behaves very differently. Where does that gap come from? Behind it is a simple, logical mechanism — and once you understand it, you'll be able to judge any offer yourself instead of trusting it blindly. Let's start with the basics.
First — where DeFi stands among other ways to invest
Before going deeper, it helps to see the full picture:
| Asset | Annual return | Risk | Liquidity | Minimum investment |
|---|---|---|---|---|
| Bank deposit | 1–3% | Very low | Medium (term deposit) | €1 |
| Real estate (rental) | 4–7% | Medium | Very low (months) | €50,000+ |
| Stocks (ETFs) | 7–10% (historically) | Medium | High (1–3 business days) | €10 |
| Bonds | 3–5% | Low | Medium | €1,000 |
| DeFi Lending | 3.5–5% (Sept 2026) | Medium–high | Very high (seconds) | $10 |
| DeFi LP | 20–60% | High | Very high (seconds) | $50 |
| DeFi Strategy B | 6–9% (with hedge) | Medium (protected) | High | $1,000+ |
These rates change week to week — the table shows September 2026 levels, not a promise.
(All positions in Lithuania are subject to GPM — Lithuania's personal income tax — on realized profit: 15% on the non-employment income portion up to 12 average wages (€27,745.80 per year), with the excess taxed at 20/25/32%; annual profit up to €2,500 is exempt. This is not tax advice — more in lesson 2-8.)
Why is DeFi's return higher than a bank's?
Three specific reasons drive the higher return:
- No middleman. A bank pays you 2%, but earns 6–10% from your money itself. A DeFiDeFiDecentralized Finance — financial services without intermediaries, operating through smart contracts.Read the lesson → protocol has no employees, offices, or advertising — so more stays with you.
- Risk premium. A higher return reflects a specific risk (smart contract bugs, liquidations, IL). You get paid for that risk — it's not a penalty, it's compensation. How to manage it — below and throughout the course.
- The crypto market is young. Too little capital, too much demand = high yields. This will shrink over time, as it did with P2P lending (used to be 15%, now 5%).
How to read these numbers
A 48% APRAPRAnnual Percentage Rate — the annual interest rate WITHOUT compounding. 10% APR = +10% per year.Read the lesson → isn't a fixed return — it's a fluctuating fee-earning rate: one week it might be 80%, the next 10%. An experienced investor looks at a big number not with excitement, but with a question: "how much of it is left after everything?" In our Strategy B, after options costs and debt costs, what's actually left is ~6–9% per year — similar to a good stock, but with instant liquidity. Learning to read the real number is one of the most important skills in all of DeFi.
APR vs APY — what's the difference?
Two words that sound alike but mean different things.
APR (Annual Percentage Rate)
APR — simple interest per year. If you have $10,000 at 6% APRAPRAnnual Percentage Rate — the annual interest rate WITHOUT compounding. 10% APR = +10% per year.Read the lesson →, you'll get $600 over a year. The interest doesn't compound.
Profit = Capital × APR × Time → $10,000 × 0.06 × 1 = $600
APY (Annual Percentage Yield)
APY — what you actually earn when the profit is added back to the balance and starts working too.
APY = (1 + APR / n)^n − 1 (n = how many times per year the profit compounds)
The compounding effect — like a snowball
Picture rolling a snowball down a hill. The longer you roll it, the bigger it gets — new snow sticks to what's already there. It's the same with money: profit gets added to the balance, and next month it's calculated on a bigger amount.
Example with $10,000 and 48% APRAPRAnnual Percentage Rate — the annual interest rate WITHOUT compounding. 10% APR = +10% per year.Read the lesson → (an illustrative, conservative assumption — LPLPLiquidity Provider — deposits tokens into a pool and earns a share of trading fees.Read the lesson → fee APRAPRAnnual Percentage Rate — the annual interest rate WITHOUT compounding. 10% APR = +10% per year.Read the lesson → fluctuates, typically ~20–60%):
- Simple interest (APR): $10,000 + $4,800 = $14,800
- Compounding monthly (APY): $16,010
- Compounding daily (APY): $16,160
A difference of $1,360 — just from the profit "working" alongside your money.
| Where you hold it | APR | Compounds | APY | Modelled return on $10,000 (hypothetical) |
|---|---|---|---|---|
| Bank (EUR) | 2% | Monthly | 2.02% | $202 |
| LendingLendingLending/borrowing in DeFi. You deposit collateral and receive a loan in stablecoins.Read the lesson → (illustrative 6%) | 6% | Monthly | 6.17% | $617 |
| OrcaOrcaA Solana DEX with concentrated liquidity (Whirlpool). The basis of our LP strategy on the Solana network.Read the lesson → LPLPLiquidity Provider — deposits tokens into a pool and earns a share of trading fees.Read the lesson → fees | 48% | Weekly | 61.2% | $6,120 |
| Deribitad premium | 15% | Every 120d | 15.8% | $1,580 |
The table shows how compounding works, not what you will earn. LPLPLiquidity Provider — deposits tokens into a pool and earns a share of trading fees.Read the lesson → fees and options premiums fluctuate — they can be several times smaller, and a position can end up at a loss. Past results do not guarantee future ones.
Where does DeFi's return come from?
DeFiDeFiDecentralized Finance — financial services without intermediaries, operating through smart contracts.Read the lesson → protocols have no buildings, employees, or bureaucracy, so the profit comes straight to you from three sources:
Lending — ~3.5–4.7% APY (Sept 2026, variable) · Kamino, Aave You lend your SOLSOLSolana's native token. Used to pay gas and as collateral.Read the lesson → or ETH to others. They pay interest directly to you — no middleman.
LP fees — 20–60% APR · Orca, Meteora You "deposit money" into a trading venue. Everyone who swaps currencies pays a small fee, and it goes to you.
Options premium — 10–20% APR · Deribit You sell "insurance" to other market participants and get paid for taking on the risk — similar to an insurance company.
Risk premium — your thinking tool
A higher return always reflects a specific risk. This isn't a warning, it's a tool: you see a big number → you ask "what risk am I being paid for here?" This one question will protect you better than any "be careful." Specific risks and how to manage them — at the end of the lesson.
Smart contract — where did the middleman go?
In the traditional world, every transaction needs a middleman. In the DeFiDeFiDecentralized Finance — financial services without intermediaries, operating through smart contracts.Read the lesson → world, a program does that job.
Smart contract — like a vending machine
You put in a coin, press a button, get a candy bar. Nobody can cheat you — the machine works by its programmed rules. A smart contract works exactly the same way, just with money: it executes the rules automatically, and no one can bypass or secretly change them — every change is visible on the blockchain.
Example with KaminoKaminoSolana lending protocol. In our strategy: SOL collateral to a USDC loan.Read the lesson →:
- You deposit SOLSOLSolana's native token. Used to pay gas and as collateral.Read the lesson → into KaminoKaminoSolana lending protocol. In our strategy: SOL collateral to a USDC loan.Read the lesson →'s smart contract.
- It automatically lends your SOLSOLSolana's native token. Used to pay gas and as collateral.Read the lesson → to others.
- Others pay interest — the contract automatically passes it on to you.
- If a borrower's collateral value drops too low, the contract automatically sells their collateral to cover the debt.
The Kamino team can't simply withdraw your deposit — but that doesn't mean the protocol is unchangeable. Most protocols can be upgraded by a developer multisig, and in KaminoKaminoSolana lending protocol. In our strategy: SOL collateral to a USDC loan.Read the lesson → V2 each market's parameters (LTVLTVLoan-to-Value — the ratio of debt to collateral value. LTV 30% is considered safe. LTV 83%+ triggers liquidation.Read the lesson →, liquidation thresholds) are set by that market's curator. In 2026 this stopped being theory: Drift lost ~$285M when an attacker took over administrative rights, and AaveAaveEthereum lending protocol (v3). In our strategy: ETH collateral to a USDC loan.Read the lesson → suppliers took ~$177M of bad debt through third-party collateral and an oracle — not through a bug in the code. So you check three things: who can change the code, who sets the parameters, and where the price comes from (the oracle). How — in lesson 2-3 (DeFiDeFiDecentralized Finance — financial services without intermediaries, operating through smart contracts.Read the lesson → risks).
Bank vs DeFi — full comparison
| What matters | Bank | DeFi |
|---|---|---|
| Annual earnings | 1–3% (contractual) | 6–48%, variable and can be negative |
| Is your money insured? | Yes (up to €100k) | No |
| Can you lose part of your capital? | No (up to €100k) | Yes, up to 100% |
| When can you use it? | Business hours | 24/7 |
| Do you need paperwork? | Yes | No (only when buying crypto) |
| Withdrawing funds | 1–3 business days | 1–60 sec |
| Who controls the money? | The bank | You |
| Can you see what's happening? | No | Yes (everything public) |
| Minimum amount? | Often 1,000+ EUR | From $1 |
A bank suits everyday transactions and safe savings (with deposit insurance). DeFiDeFiDecentralized Finance — financial services without intermediaries, operating through smart contracts.Read the lesson → suits people who want to actively manage their own money and understand what they're doing. It's not a "better bank" — it's a different system with different rules. Our goal is to help you understand them.
How this fits into the DeFi Risk OS strategies
Strategy A — Covered Call + LP: lending ~4.7% APYAPYAnnual Percentage Yield — the annual interest rate WITH compounding. Always higher than the equivalent APR.Read the lesson → (Sept 2026) + LPLPLiquidity Provider — deposits tokens into a pool and earns a share of trading fees.Read the lesson → fees 20–60% APRAPRAnnual Percentage Rate — the annual interest rate WITHOUT compounding. 10% APR = +10% per year.Read the lesson → + options premium 10–15% APRAPRAnnual Percentage Rate — the annual interest rate WITHOUT compounding. 10% APR = +10% per year.Read the lesson →.
Strategy B — Multi-Layer Yield: a 3-layer system, several income streams stacked on top of each other, ~6.4% APRAPRAnnual Percentage Rate — the annual interest rate WITHOUT compounding. 10% APR = +10% per year.Read the lesson → from the yield component alone, 64% of the portfolio protected by options.
Risk and how you manage it
- Smart contract bug and protocol governance → audited does not mean safe: check not only the audit, but who can change the code, who sets the parameters, and where the price comes from. How to check — lesson 2-3 (DeFiDeFiDecentralized Finance — financial services without intermediaries, operating through smart contracts.Read the lesson → risks).
- Price drop / impermanent loss → that's why the strategy includes options protection (hedge); the LPLPLiquidity Provider — deposits tokens into a pool and earns a share of trading fees.Read the lesson → position is built deliberately, not blindly.
- Fluctuating return → plan around a realistic ~6–9% after costs, not the 48% headline.
- Liquidation (when borrowing) → keep a safe LTVLTVLoan-to-Value — the ratio of debt to collateral value. LTV 30% is considered safe. LTV 83%+ triggers liquidation.Read the lesson →; more on this in Module 3.
- Regulatory risk → DeFiDeFiDecentralized Finance — financial services without intermediaries, operating through smart contracts.Read the lesson → lending currently sits outside MiCAMiCAThe EU crypto-asset regulation (Markets in Crypto-Assets).Read the lesson →, but in 2026 the EU is consulting on bringing it in (the consultation closes 2026-09-30). Your lever: don't tie yourself to a single protocol or jurisdiction, hold positions you could close within a few days, and follow ESMA and Bank of Lithuania announcements.
Every risk has a specific lever. You don't ignore it and you don't fear it — you manage it.
Summary
- APR = simple interest. APY = with the compounding effect (profit on profit).
- A bank pays 1–3% because it keeps most of the profit for itself (and is insured).
- DeFiDeFiDecentralized Finance — financial services without intermediaries, operating through smart contracts.Read the lesson → pays 6–48%+ because there's no middleman — but the return comes with a specific, manageable risk.
- Risk premium — your tool: a big number → the question "what risk am I being paid for?"
- After this lesson, you can already read any "APRAPRAnnual Percentage Rate — the annual interest rate WITHOUT compounding. 10% APR = +10% per year.Read the lesson →" yourself and understand where it comes from.
In this lesson you saw a bank vs DeFi table. Now gather today's numbers from both worlds yourself — it takes about 7 minutes, nothing to buy.
This is learning, not investing — use only small amounts you treat as tuition.
You just compared a bank and DeFiDeFiDecentralized Finance — financial services without intermediaries, operating through smart contracts.Read the lesson → with today's actual numbers and saw the risk premium with your own eyes — most people who talk about crypto have never done that. This is the foundation the rest of the course stands on.
Next step: you now understand where DeFiDeFiDecentralized Finance — financial services without intermediaries, operating through smart contracts.Read the lesson →'s return comes from and how to read it. In the next module we move to practice — your first exchange and first purchase, step by step.