How to Start Investing With a Small Amount of Money

I got hired full time at 21. From day one I started putting money away. Not because I had it all figured out – I did not. But I had heard enough times that starting early mattered, so I started.

By 28 I had $250,000. Seven years of driving a truck and investing consistently built that. Not a windfall. Not crypto luck. Just compound growth on money I put in every month while I was too busy working to overthink it.

I am not telling you that to brag. I am telling you that because most people my age have almost nothing saved, and the difference is not income. My coworkers make the same money I make. The difference is they are waiting. Waiting for the right time, waiting until they have more, waiting until they understand the market better. That day does not come. I know because I watched it not come for people around me for seven years.

You do not need a lot to start. You need to start. Here is exactly what I would do if I were opening my first investment account today.

The Lie That Keeps People From Starting

The biggest lie in personal finance is that you need serious money to start investing. That myth has kept more regular working people on the sidelines than anything else. I watched it happen to people around me for years.

Here is where it comes from. Old school investing did have minimums. Mutual funds used to require $1,000, $3,000, sometimes $10,000 to open a position. Brokerage accounts charged commissions on every trade. If you had $200 to invest, the fees alone would eat a meaningful chunk of your return. It made sense to wait until you had more.

That world is gone. It ended years ago and nobody sent most working people the memo.

Today you can open an investment account with zero dollars. You can buy fractional shares. You can invest $5 into an index fund that tracks 500 of the biggest companies in America. The minimums have been wiped out. The commissions on basic index funds are zero. The only thing left in the way is the mindset that things still work the old way.

I built $250,000 by age 28. Seven years of consistent investing starting at 21. I eventually lost a big chunk of it going through a divorce – but that experience taught me more about money than the accumulation phase did. The principles that built it the first time are the same ones that will build it again.

You Do Not Need a Minimum to Get Started

Let me be specific so this is not just abstract encouragement.

Fidelity has no account minimums. Zero. You can open a Roth IRA or a regular taxable brokerage account and fund it with whatever you have. Ten dollars. Twenty dollars. Fifty. There is no gatekeeper checking to see if your opening deposit is big enough.

This matters because the Roth IRA is one of the best accounts a working person can have. You put in money you have already paid taxes on, it grows for decades, and when you pull it out in retirement you pay no taxes on the gains. None. That is a massive benefit and it is available to anyone with earned income under the IRS limit. You do not have to be rich to use it. You just have to open the account.

I have a full walkthrough on how to open a Roth IRA step by step if you want to follow the process from start to finish. It takes about 15 minutes and you can do it from your phone.

If you want something even more hands-off, there is also Acorns. It rounds up your purchases to the nearest dollar and invests the difference automatically. Buy a coffee for $3.60, Acorns sweeps the extra $0.40 into a portfolio. It costs $3 a month. For someone who wants fully automated and does not want to think about it, Acorns is a real option. I would not rely on it as your main strategy long term because the fee is proportionally high when your balance is small, but it is better than nothing and it builds the habit.

Where to Put Your First Dollar

The account question and the investment question are separate things. The account is just the container. What you put inside it is what actually grows your money.

When I started rebuilding, I kept it simple on purpose. Two index funds. That was it.

An index fund is not a single stock. It is a basket of stocks that tracks a market index. When you buy one share of a total market index fund, you are buying a tiny piece of thousands of companies at once. Your money is spread out. No single company going under wipes you out. I have a full breakdown of index funds explained for beginners if you want to go deeper on how they work.

The reason index funds matter for small investors specifically is the cost. Most actively managed funds charge 0.5% to 1.5% per year in fees. That sounds small but over 30 years it grinds down your returns significantly. Index funds are different. Because they just follow an index and do not require a team of analysts picking stocks, the costs are near zero.

At Fidelity, two funds stand out for anyone starting small:

• FZROX – Fidelity Zero Total Market Index Fund. Tracks the entire US stock market. Expense ratio is 0%. That is not a typo. Zero annual fees.
• FXAIX – Fidelity 500 Index Fund. Tracks the S&P 500, the 500 largest US companies. Expense ratio is 0.015%, which rounds to basically nothing.

Either of those two funds is a solid place to start. You do not need both. Pick one, put your money in, and repeat every month.

What to Actually Buy

I want to give you a concrete picture because general advice is easy to nod at and then ignore.

Say you have $50 to invest this month. You open a Roth IRA at Fidelity. You put in $50. You buy $50 worth of FZROX. Done. That is the whole move.

Next month you do the same thing. And the month after that.

Here is why this matters more than it feels like it does in the moment. If you put $50 per month into an investment that grows at 8% per year on average, after 30 years you have roughly $75,000. You put in $18,000 of your own money over those 30 years. The rest, about $57,000, is growth on growth on growth. That is compound interest doing its job.

The S&P 500 has historically averaged around 10% per year before inflation over the long run. I use 8% as the planning number because it is more conservative and accounts for inflation and fees. Your actual result will vary. Some years will be up 20%. Some will be down 30%. The average is what matters over decades, not what happens in any single year.

If you can do $100 a month instead of $50, that same 8% over 30 years turns into about $150,000. Not life-changing money on its own, but meaningful. Stack that with a 401k at work, a Roth IRA maxed out when you can swing it, and a few other moves and you are building something real.

For context on how to think about allocating across different account types, I wrote about how to allocate your Roth IRA and 401k portfolio once you have both going.

The One Rule That Changes Everything

I have been talking about the what and the where. Now I want to talk about the how – the one thing that actually determines whether small amounts of money eventually turn into something real.

Automate it.

Set up an automatic transfer from your checking account to your investment account every month on payday. Treat it like a bill. Not a bill you might skip if things are tight – a bill you pay first, like rent. The amount is less important than the consistency.

When I started rebuilding after the divorce, my focus was Bitcoin. I was putting every spare dollar I had each week into Bitcoin – not spreading it around, not overthinking it. That conviction came from understanding what Bitcoin actually is and why I wanted to own it. But the automation principle still applied: I set a recurring buy so it happened without me having to decide each week. The money moved before I had a chance to spend it on something else.

Whether it is an index fund or Bitcoin, the mechanic is the same. Automate it. Make it boring. Let time do the work.

The reason automation works is that it removes the decision. Every time you have to actively decide to invest, you introduce friction. Life gets busy – and I know what busy looks like because I drive a truck five days a week and come home to a toddler. There is no mental bandwidth left for optional financial decisions at 7pm. Automation means the decision gets made once and then it runs on autopilot.

The other piece of this is staying in the market through the rough patches. When the market drops 20%, every instinct tells you to sell. Do not. The people who pulled out during the 2020 crash locked in their losses and missed the recovery. The people who stayed in, and especially the ones who kept buying at lower prices, came out ahead. Time in the market beats timing the market. That is not a slogan. The data backs it up over and over.

Here is the deeper reason why. Every time the economy hits a wall, the government responds the same way – it prints money. We saw it in 2008. We saw it in 2020. Trillions of dollars created out of thin air to prop things back up. That money has to go somewhere, and a lot of it flows into stocks. The market recovers and hits new all-time highs not just because companies get better, but because the dollar itself is worth less. Your index fund going up is partly real growth and partly the purchasing power of the currency going down.

This is also why I own Bitcoin alongside index funds. Bitcoin has a fixed supply – 21 million coins, ever. No government can print more of it. While the dollar gets diluted over time, Bitcoin gets scarcer. I wrote about why I own Bitcoin if you want to understand my thinking. The point is not to avoid index funds – they are still one of the best tools a working person has. The point is to understand what you own and why the market keeps going up long term.

The biggest mistake I see is people waiting until they have more money to start. I made that mistake for years. The truth is, that day usually does not come. There is always a reason to wait – a car repair, a medical bill, a slow month. Meanwhile the people who started with $30 a month five years ago are sitting on accounts that look like real money now.

You can read more about building wealth on a working wage in my piece on how to build wealth on an hourly wage. Same principles apply whether you are hourly or salaried.

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