What does investing for 20 years actually look like?
A lot of people say the same thing: invest consistently, hold for the long-term and don’t overthink it. To be fair, that method does work in theory. If you buy and hold major stocks and ETFs that have been around since the dawn of time, you’re almost guaranteed to see profits in 20 years.
But instead of asking: “Will I be in profit?”, the better question is: “How significantly can those profits impact my lifestyle?”
So, what do those profits look like in real life? Not in theory… Not in percentages. In your life. With your income. Over 20 years.
The ‘simple’ investing strategy
Let’s define what we mean…
We’re talking about the strategy where someone:
invests every month (usually after getting paid)
doesn’t try to time the market
doesn’t analyse charts
just buys and holds
Most of the time, they invest in something like the S&P 500 or similar funds.
This approach is popular because:
it’s simple
it doesn’t require skill
it removes emotion
And historically, it returns:
~7% per year (after inflation)
~9–10% (before inflation)
These numbers assume that dividends are reinvested (which is how long-term returns are usually calculated).
So yes… it works. But it doesn’t always play out the same way because markets move in cycles. If you start investing when the market is already at a high point, your returns over the next 10–20 years can be lower than average… That doesn’t break the strategy. It just means that the outcome depends on when you start. So instead of staying in theory, let’s look at what this actually becomes in numbers… We’ll use a long-term average to keep things simple. Reality won’t be this smooth, but it gives us a solid baseline.
What happens if you actually do this for 20 years?
Let’s keep things relatively simple and realistic. No crazy assumptions and no ‘perfect investor’ behaviour… We’ll assume:
consistent monthly contributions
an inflation adjusted return ( ~7%)
Rs 35,000 net monthly salary
Scenario 1: investing Rs 10,000 every month
You’d be looking at a total of around Rs 5 million. It sounds decent. But for a 20 year commitment of:
~28.6% of your net monthly salary if you’re single
~14.3% of the household’s net monthly salary if you’re in a couple
the return isn’t life changing… But it’s still a respectable safety net that many people don’t end up having in their later years.
Scenario 2: investing Rs 25,000 every month
Now you’d potentially be starting to feel something with a total of around Rs 13 million. But this isn’t easy. We’re talking about a 20 year commitment of:
~71.4% of your net monthly salary if you’re single
35.7% of the household’s net monthly salary if you’re in a couple
The reality is that, for most single people, this isn’t a realistic scenario… If you’re alone, you would need:
much higher income
very low expenses
It’s still a serious commitment for a couple. 35.7% of the household’s net monthly income is not easy to maintain consistently. Especially if children are involved.
Scenario 3: investing Rs 50,000 every month
Given our Rs 35,000 net monthly salary, we’ll only explore this scenario for a couple. At the end of the 20-year period, they could expect around Rs 26 million.
This is where it starts to look like ‘real wealth’ for a consistent commitment of ~71.4% of the household’s monthly net salary. It would require a lot of discipline and sacrifice from everyone involved.
An important caveat
It’s important to remember that life in general isn’t consistent:
job changes or layoffs
separations
financial emergencies
priority shifts
All of these can realistically happen to any of us. A consistent 20-year commitment isn’t lightweight.
Same strategy, completely different outcomes
This is the part that most people don’t realise. The strategy is the same in all 3 scenarios: buy, hold and repeat for 20 years. But, as we saw it, the outcome depends heavily on how much you can invest… not just how consistent you are.
If you strip everything down, it comes to this:
you invest a lot
you wait a long time
There’s no shortcut hidden inside this strategy.
What about buying individual stocks?
Some people prefer putting their money in individual companies (like Apple or Tesla) and holding those stocks long-term. It’s true that some stocks generate massive returns. Looking back, it can feel like obvious investments. But (whether you’d like to believe it or not) that’s hindsight…
When you’re actually investing prior to the massive returns, there’s always uncertainty and no guarantee that whatever stock you’re buying will become a top performers. That’s the reality and the challenge that comes with buying individual stocks… You have to pick (and hold) the winners before they become ‘obvious’. Most stocks don’t turn into big winners and holding without selling is easier said than done. So unless you’re very intentional and skilled… or have some insider trading level information… you’re more likely to underperform the market (or match it at best).
That’s why many long-term investors prefer something like the S&P 500. Instead of trying to pick the winners, they just ‘own’ the market and automatically benefit from the companies that do succeed over time.
The part that no one really talks about
The buy and hold strategy’s biggest trade-off is time.
You’re essentially choosing:
slow and steady growth
delayed rewards
For many people, this journey quietly becomes: “I’ll enjoy later”.
So… is it worth it?
Yes. This strategy has its purpose. But not for the reasons that people think…
This approach:
builds stability
relatively protects your future
grows your money over time
But what it doesn’t guarantee:
fast wealth
disproportional lifestyle upgrades
a feeling of ‘freedom’
It has its purpose, but it’s not for everyone.
Before you commit to this path
Take a few minutes to play around with your own numbers… Make a copy of the calculator and see how the 20-year holding strategy looks like with your income.
Once you see:
how much you need to invest
how long it actually takes
You’ll be better equipped to make a real decision instead of vaguely following a concept.
Pou résumé
Investing monthly and holding long-term works. Average returns are around 7% per year (after inflation). Your outcome basically depends on the size of your investments and the amount of time that you allow to pass. Small contributions lead to stability, not rapid wealth.
But the biggest take away is to do the math with your personal numbers. It’s important to know what this strategy looks like in your reality.