Trade Tuesday - Firm Foundation
What really happens when you put aside a small amount every month — and let compound interest do its job?
There is a truth about money that most of us were never taught in school: You don't have to be rich to get rich. You just need to start. And you need time.
This post is about compound interest — the phenomenon that Einstein is said to have called the eighth wonder of the world. We'll take a concrete look at what happens if you put away 2,500, 5,000, 10,000 or 20,000 kronor every month in a global index fund savings account, and let it grow for 5, 10, 15, 20 or 25 years.
The results are astonishing. And they apply to everyone.
Around year 19, something magical happens: the return on your money exceeds what you actually invested. The market has literally copied your entire savings — and given you an extra copy.
How does it work?
A global index fund — such as Avanza Global or Länsförsäkringar Global Indexnära — has historically returned around 7–10% per year on average, adjusted for inflation and downturns. We conservatively estimate 7% per year.
That may not sound like much. But compound interest means that you don't just get a return on what you put in — you get a return on your return. Every year, the ball rolls a little bigger. And it's that rolling ball that, over time, creates something akin to magic.
Let's look at the numbers.
SEK 2,500/month
A gym membership and a dinner out
| Time | Inserted | Return | Total value |
|---|---|---|---|
| 5 years | 150,000 SEK | +28 982 SEK | 178,982 SEK |
| 10 years | 300,000 SEK | +132 712 SEK | 432,712 SEK |
| 15 years | 450,000 SEK | +342 406 SEK | 792,406 SEK |
| 20 years ✦ | 600,000 SEK | +702 317 kr | 1,302,317 SEK |
| 25 years | 750,000 SEK | +1,275,179 SEK | 2,025,179 SEK |
✦ Marks approximate point when return exceeds amount invested
5,000 SEK/month
A subscription and some fun
| Time | Inserted | Return | Total value |
|---|---|---|---|
| 5 years | 300,000 SEK | +57 965 SEK | 357,965 SEK |
| 10 years | 600,000 SEK | +265 424 SEK | 865,424 SEK |
| 15 years | 900,000 SEK | +684 811 SEK | 1,584,811 SEK |
| 20 years ✦ | 1,200,000 SEK | +1,404,633 SEK | 2,604,633 SEK |
| 25 years | SEK 1,500,000 | +2 550 358 SEK | 4,050,358 SEK |
✦ The return exceeds the amount invested
10,000 SEK/month
Powerful foundation for financial freedom
| Time | Inserted | Return | Total value |
|---|---|---|---|
| 5 years | 600,000 SEK | +115,929 SEK | 715,929 SEK |
| 10 years | 1,200,000 SEK | +530 848 SEK | 1,730,848 SEK |
| 15 years | 1,800,000 SEK | +1,369,623 SEK | 3,169,623 SEK |
| 20 years ✦ | SEK 2,400,000 | +2,809,267 SEK | 5,209,267 SEK |
| 25 years | SEK 3,000,000 | +5 100 717 kr | 8,100,717 SEK |
✦ The market has copied all your savings and added them on top
20,000 SEK/month
Accelerated path to financial independence
| Time | Inserted | Return | Total value |
|---|---|---|---|
| 5 years | 1,200,000 SEK | +231 858 SEK | 1,431,858 SEK |
| 10 years | SEK 2,400,000 | +1,061,696 SEK | 3,461,696 SEK |
| 15 years | 3,600,000 SEK | +2,739,246 SEK | 6,339,246 SEK |
| 20 years ✦ | 4,800,000 SEK | +5 618 533 SEK | 10,418,533 SEK |
| 25 years | SEK 6,000,000 | +10 201 434 SEK | 16,201,434 SEK |
Calculations are based on 7% average annual return, monthly deposit. Historical returns are no guarantee of future returns.
What do the numbers really say?
Look at 2,500 SEK/month — an amount most of us can find if we really look. Not even more than a gym membership and a restaurant dinner. In 25 years, you have deposited 750,000 SEK. But your account shows SEK 2,025,179. The market has created almost 1.3 million kronor for you — without you lifting a finger.
And with 5,000 kronor a month, which for many is a monthly vacation or a car expense, you will pass four million kronor in 25 years. Of which 2.5 million is pure return.
What strikes me most is not the big numbers. It's what happens at the 20-year mark: the return exceeds the amount invested. The market has literally copied all your years of saving — and given you a duplicate.
This applies regardless of whether you save 2,500 or 20,000 a month. Around year 19, the equation turns. You have received more than you gave.
But what happens to the Swedish pension?
Here is a truth that many don't talk about out loud: the public pension is often not sufficient to maintain your standard of living.
As an employee in Sweden, you and your employer pay into three parts: income pension, premium pension and (often) occupational pension. The system is based on solidarity and security — but it is designed to give you around 50–65% of your final salary. And for those who have worked part-time, taken parental leave, run their own business or had irregular income — often much less.
Traditional Swedish pension
- Approximately 50–65% of final salary for full-time employee
- Lower for self-employed and part-time workers
- Controlled by political decisions and demographics
- Flexibility is limited
- Can be withdrawn from age 63
- Not influenced by own choices until retirement age
Own monthly savings in index funds
- Completely your own — you decide everything
- Can be taken out whenever you want, however you want
- Can supplement or replace the pension gap
- Provides financial freedom long before 63
- Works regardless of employment type
- Built on interest-on-interest, not political systems
The average pension in Sweden today is approximately SEK 14,000–17,000 per month for a typical wage earner. That's a big difference from a monthly salary of 35,000–50,000 SEK. That gap is yours to fill — and index fund savings are one of the most powerful tools we have to do it.
Think about it this way: 5,000 kronor a month for 25 years gives you 4 million kronor. That's not a small amount. It's a supplement to your pension that can mean you choose when to stop working — not the system choosing for you.
~60%
Of the final salary, a typical pension provides
19 years
Until the return exceeds the amount invested
7%
Historical average return, global index
It's never too late — and never too early
The most common obstacle isn’t money. It’s paralysis. ”I can’t afford it.” ”I don’t know how.” ”I should have started ten years ago.”
But look at the tables again. If you start today with 2,500 kronor a month and have 15 years left? You end up with almost 800,000 kronor — of which 342,000 kronor is money you never even worked for. It's just interest. Just time.
And do you start with 5,000 kronor a month at 40 and retire at 65? You have a savings capital of four million kronor as a complement to your public pension. Suddenly, retirement is not a source of anxiety. It is a plan.
The best time to start was ten years ago. The second best time is today.
Start small if you have to. Start with 500 kronor. With 1,000. The important thing is that you start the compound interest engine — because it works every day, every month, every year. Quietly and patiently, just like you should have learned in school.
Now you know. And now it's time to start.
NOTE: This is not financial advice. All figures are based on 7% historical average annual returns for a global equity index and are for illustrative purposes only. Historical performance is not a guarantee of future results. Please consult an independent financial advisor if you are unsure what is appropriate for your particular situation.
Trade Tuesday
Every Tuesday at Amaelle Life is about a firm foundation — finances, investing, and building security on your own terms.
