Finance has a language problem.

Not necessarily because finance itself is impossible to understand, but because the explanations often start like this:

“An asset is…”

“A liability is…”

“Compound annual growth rate is…”

“The present value of future cash flows…”

And after reading three definitions, your brain quietly says: “Sure. I understand.”

Until someone asks you to explain it. Then everything suddenly becomes much less clear. This is exactly why using the Feynman Technique to learn finance works so well.

Instead of trying to memorize financial vocabulary, you force yourself to answer a much more important question:

“Could I explain this concept to someone who knows nothing about finance?”

Why Finance Is a Great Subject for the Feynman Technique

Finance contains many concepts that are connected to each other.

For example: Income → expenses → savings → investing → returns → compounding → wealth

If you memorize each definition separately, you may know the words without understanding the system.

The Feynman Technique helps you slow down and ask: “What does this actually mean in real life?”

That question is powerful.

Step 1: Pick One Finance Concept

Don’t start with: “I want to learn investing.” That’s too broad.

Choose one idea.

For example:

• What is compound interest?
• What is inflation?
• What is an emergency fund?
• What is net worth?
• What is diversification?
• What is an index fund?
• What is opportunity cost?
• What is a budget deficit?

One concept at a time.

Step 2: Explain It Without Financial Jargon

Let’s use net worth.

A textbook explanation might sound complicated.

But try this:

Your net worth is what you own minus what you owe.

That’s simple.

Now make it more concrete.

Imagine you own:

• $20,000 in savings and investments
• a car worth $15,000

But you owe:

• $8,000 on the car
• $2,000 on a credit card

Your net worth would be: $35,000 − $10,000 = $25,000

Now you understand more than the definition. You understand the structure.

Step 3: Notice Where Your Explanation Breaks

Let’s try another one:

What is inflation?

You might say: “Inflation means prices go up.” That’s partly true, but incomplete.

You may then ask:

Why do prices rise?

Does every price rise at the same time?

What happens to purchasing power?

Why does inflation matter if my salary also increases?

Now you’ve found several possible knowledge gaps.

That’s useful. You know exactly what to investigate next.

Step 4: Use a Real-Life Example

Finance becomes much easier when you connect an abstract concept to something ordinary.

For example:

Compound Interest

Instead of thinking: “Interest compounds periodically.”

Think: “The money my money earns can become part of the amount earning money next.”

That mental model is much easier to remember.

Then ask yourself:

Why does starting earlier matter?

What happens if I keep adding money?

What happens if the return changes?

You don’t need to turn yourself into a financial expert.

You simply want to understand the mechanism.

Using the Feynman Technique worksheet to break down a finance concept.

A Complete Example: Learning Compound Interest

Let’s pretend you’re learning compound interest for the first time.

Step 1: Define the concept

Topic: Compound Interest

Question:

What exactly am I trying to understand?

Answer:

How money can grow when returns are added back to the balance.

Step 2: Explain it simply

If your money earns a return, and you leave that return invested, the next period’s growth can happen on a larger balance.

Step 3: Find the gap

Ask:

Why does the effect become larger over time?

Maybe you aren’t sure.

That’s the gap.

Step 4: Go back and learn

Now review a numerical example.

Then close your notes.

Try again:

“At first, growth is calculated on a relatively small amount. But when previous growth stays invested, the balance becomes larger. Future growth can then build on that larger balance. Over many periods, this creates a compounding effect.”

Now you’ve moved from: definition → mechanism → understanding

That’s the real purpose of the exercise.

You Can Use the Same Method for Almost Any Finance Topic

Budgeting

Instead of memorizing: “A budget is a plan for income and expenses.”

Ask: Why would someone need a budget if they already know how much they earn?

Then explain it.

Perhaps: “A budget is basically a plan that tells my money where to go before I accidentally spend it somewhere else.”

That’s much more useful.

Diversification

Instead of: “Diversification reduces unsystematic risk.”

Try: “I don’t want my entire financial future to depend on one investment doing well.”

Then ask:

What kind of risk does diversification reduce?

What can’t diversification eliminate?

Now you’re actually thinking.

Opportunity Cost

This one is particularly useful.

Instead of memorizing a definition, try:

“Every time I choose one option, I give up the chance to use that time or money somewhere else.”

Then give yourself an example.

If you spend $100 on something today, you can’t use that same $100 for another purpose.

That’s opportunity cost.

The Best Question to Ask When Learning Finance

Whenever you encounter a financial term, ask:

“What does this look like in real life?”

This question will save you from becoming someone who can repeat financial vocabulary without understanding it.

For example:

Inflation

→ What happens when groceries become more expensive?

Interest rate

→ What does borrowing money become more expensive actually look like?

Net worth

→ What would my own balance sheet look like?

Compounding

→ What happens when returns stay invested?

Cash flow

→ What money actually comes in and goes out?

That is where financial knowledge becomes practical.

Use the Worksheet to Build a Finance Learning Habit

One reason I like using a physical worksheet for this process is that it makes the thinking visible.

My Feynman Technique Printable Worksheet was designed around four repeatable stages:

1. Define the concept
2. Teach it simply
3. Review and fill the gaps
4. Simplify and store

Each page gives you two learning cycles, and the printable is available in A4, A5, and Personal sizes.

[Feynman Technique Printable Worksheet →]

You could use one page for: Compound Interest; and another for: Inflation.

Then gradually build your own personal finance knowledge library.

One Important Reminder About Learning Finance

Understanding a financial concept is not the same as making a financial decision. The Feynman Technique can help you understand terminology, relationships, and basic mechanisms.

But personal financial decisions depend on your circumstances, goals, risk tolerance, taxes, laws, and other factors. So use the technique to become a better learner—not as a substitute for professional financial advice when you actually need it.

Try This Today

Pick one financial concept you’ve seen repeatedly but never quite understood.

Maybe: compound interest

or: inflation

Don’t Google ten more articles immediately. First, close your notes and try to explain it.

Find the gap. Then go back. Learn that one piece. Explain it again.

That’s how finance starts becoming less intimidating.

Not by learning everything at once. By making one confusing idea clear at a time.

[The Feynman Technique: How to Actually Understand What You Learn →]

[Feynman Technique vs. Active Recall →]