You can start investing in stocks with less than $100, but your choices depend on how much you have and what kind of account you use
The barrier to stock market entry has fallen. Twenty years ago, most brokers required a minimum deposit of $500 to $2,000 and charged $5 to $10 per trade. Today, many brokers accept accounts with $0 minimum and charge no commission on stock or exchange-traded fund (ETF) trades. This means you can buy a single share of a company or add $50 to an ETF each month without paying fees that eat your returns.
The real constraint is not money — it is understanding what account type fits your situation and what costs still exist. A brokerage account works differently from an IRA. Fractional shares work differently from whole shares. Some platforms charge monthly fees if your balance stays below a threshold. Some restrict what you can trade. This guide walks through the actual mechanics: what each account type costs, what you can and cannot do with the money, and what happens when you sell.
Key Takeaways
- A standard brokerage account has no contribution limits and no withdrawal restrictions, but you pay taxes on gains and dividends each year.
- An IRA (either Traditional or Roth) lets you invest tax-deferred or tax-free, but limits how much you can contribute yearly and charges penalties if you withdraw before age 59½.
- Fractional shares let you buy partial ownership of expensive stocks for any dollar amount, but not all brokers offer them and some charge fees to trade them.
- Monthly account fees, inactivity fees, and minimum balance requirements still exist at some brokers, so comparing the fine print matters even when commission is zero.
- Your first decision is whether you want the money to be locked away for retirement (IRA) or available whenever you need it (brokerage account).
Brokerage accounts: no limits, but you pay taxes yearly
A standard brokerage account (sometimes called a taxable account) is the simplest path. You open it at a broker like Fidelity, Charles Schwab, E*TRADE, or Webull, deposit money, and buy stocks or ETFs. There is no contribution limit, no income limit, and no age requirement. You can withdraw money whenever you want without penalty.
The trade-off is taxes. When you sell a stock for a profit, you owe capital gains tax on the difference between what you paid and what you sold it for. If you hold the stock for less than one year, that gain is taxed as ordinary income (at your regular tax rate). If you hold it for more than one year, it is taxed at the long-term capital gains rate, which is lower. You also owe taxes on dividends each year, even if you do not sell anything. The broker sends you a 1099 form in January listing all your taxable events.
For someone starting with small amounts, this tax drag is real but not disqualifying. If you invest $50 a month and the account grows to $1,000 over two years, you might owe $50 to $100 in taxes on gains — not nothing, but not catastrophic. The advantage is flexibility: you can take the money out whenever you need it, with no penalty.
Traditional and Roth IRAs: tax benefits, but money is locked until 59½
An IRA (Individual Retirement Account) is a tax-advantaged account designed for retirement savings. There are two main types: Traditional and Roth. Both let you invest in stocks and ETFs, but the tax treatment and withdrawal rules differ.
With a Traditional IRA, you contribute money that may be tax-deductible in the year you contribute it (depending on your income and whether you have a workplace retirement plan). The money grows tax-deferred, meaning you do not pay taxes on gains or dividends while the money is in the account. When you withdraw money after age 59½, you pay income tax on the full amount withdrawn. If you withdraw before 59½, you owe a 10% penalty plus income tax on the withdrawal, with narrow exceptions (first-time home purchase up to $10,000, medical expenses, disability).
A Roth IRA works in reverse. You contribute money that is not tax-deductible, but the money grows tax-free and you can withdraw it tax-free after age 59½. The catch: you must have earned income to contribute, and there are income limits. For 2024, you cannot contribute to a Roth if your income exceeds $161,000 (single) or $240,000 (married filing jointly). Like a Traditional IRA, early withdrawal of earnings triggers a 10% penalty and income tax, though you can withdraw your contributions (not earnings) anytime without penalty.
Both account types have annual contribution limits. For 2024, you can contribute up to $7,000 per year to either a Traditional or Roth IRA (or a combination of both), or $8,000 if you are age 50 or older. This limit resets each January 1st. If you contribute more than the limit, the IRS charges a 6% penalty tax on the excess each year until you remove it.
Fractional shares: buying partial ownership for small dollar amounts
A fractional share is a piece of a single share. If a stock costs $500 per share and you have $50, you can buy 0.1 shares (one-tenth of a share) instead of waiting until you have $500. This is useful when you are starting small.
Most major brokers now offer fractional shares on stocks at no extra cost: Fidelity, Charles Schwab, E*TRADE, Webull, and others. Some brokers also offer fractional shares of ETFs. However, not all brokers support fractional shares, and some charge a fee to buy or sell them. Robinhood offers fractional shares on stocks but not ETFs. Some older or smaller brokers do not offer them at all.
When you own a fractional share, you still receive dividends (paid proportionally) and you can sell it anytime. The main limitation is that you cannot exercise voting rights or participate in stock splits with fractional shares — but for a small investor, this rarely matters. If a company you own fractional shares in is acquired or goes through a corporate action, the broker handles the transaction for you.
ETFs and index funds: lower cost than picking individual stocks
An exchange-traded fund (ETF) is a basket of stocks or bonds bundled into one security. You buy one ticker symbol and own a piece of hundreds or thousands of underlying holdings. A mutual fund works similarly but is priced once per day; an ETF trades throughout the day like a stock.
For a small investor, ETFs have two big advantages. First, they cost less to own. Most ETFs charge an annual fee (called an expense ratio) between 0.03% and 0.20% per year. A $1,000 investment in an ETF with a 0.10% expense ratio costs $1 per year. A mutual fund often charges 0.5% to 1.5% or more. Second, they are diversified by design. A single $50 investment in an S&P 500 ETF gives you exposure to 500 large companies, whereas $50 in a single stock is a bet on one company.
Index funds (mutual funds that track an index like the S&P 500) offer similar diversification and low costs, but they trade once per day and some have minimum investments. ETFs trade throughout the day and most have no minimum. For someone starting with small amounts, an ETF is usually the simpler choice.
Comparing costs: commissions, fees, and account minimums
Commission on stock trades is now zero at nearly all major brokers. But other costs still exist and vary by broker.
| Cost Type | What It Is | Where It Still Exists |
|---|---|---|
| Monthly account fee | A flat fee charged each month just to hold the account | Some brokers waive it if you maintain a minimum balance ($500 to $25,000 depending on the broker) or set up direct deposit |
| Inactivity fee | A fee charged if you do not trade for a set period (usually 12 months) | Rare at major brokers; more common at smaller or older platforms |
| Minimum balance requirement | You must keep a certain amount in the account or face fees or account closure | Varies; some brokers have no minimum, others require $500 to $2,500 |
| Fractional share trading fee | A fee to buy or sell fractional shares | Most major brokers charge nothing; some smaller platforms charge $0.01 to $0.05 per trade |
| Wire transfer fee | A fee to move money out of the account | Most brokers charge $0 to $25 for outgoing wires; ACH transfers are usually free |
Before opening an account, check the broker's fee schedule. Fidelity, Charles Schwab, and E*TRADE have no monthly fees, no minimum balance, and no inactivity fees. Webull has no monthly fees and no minimum. Robinhood has no fees but makes money by lending your shares to short-sellers and selling order flow to market makers. None of these choices is wrong — they just have different trade-offs.
How to move from small amounts to consistent growth
Starting with $50 or $100 is not a limitation if you plan to add money regularly. Many investors use dollar-cost averaging: investing the same amount at regular intervals (weekly, monthly, or quarterly) regardless of price. If you invest $50 every month for five years, you contribute $3,000 total. If that grows to $4,000, you have made $1,000 in gains.
Some brokers offer automatic investment plans where you set up a recurring transfer and purchase. Fidelity, Schwab, and others let you schedule automatic purchases of specific stocks or ETFs. This removes the friction of logging in each time and can help you stick to a plan.
The math of small amounts compounds over time. A $50 monthly investment earning 7% annually (roughly the historical average for stock market returns) grows to about $41,000 over 30 years. The first $50 you invest matters as much as the last because it has the most time to grow. This is why starting early with small amounts often beats waiting to invest a large lump sum later.
Frequently Asked Questions
Can I open a brokerage account if I am under 18?
No, you must be 18 to open an account in your own name. If you are younger, a parent or guardian can open a custodial account (also called an UTMA or UGMA account) in your name. The adult controls the account until you reach the age of majority (18 or 21, depending on your state), at which point it becomes yours.
What is the difference between a stock and an ETF for a beginner?
A stock is ownership in one company. An ETF is ownership in many companies at once. If you buy one share of Apple, you own a tiny piece of Apple. If you buy one share of an S&P 500 ETF, you own a tiny piece of 500 companies. For a beginner with small amounts, an ETF is usually less risky because you are not betting everything on one company.
Do I have to report my brokerage account to the IRS?
You report gains and losses on your tax return each year. Your broker sends you a 1099 form in January listing all your taxable events (sales, dividends, interest). You use this to fill out Schedule D (for capital gains) and Schedule B (for dividends and interest) on your tax return. If you have no gains and no income from the account, you may not owe taxes, but you still report the activity.
What happens to my stocks if the broker goes out of business?
Your stocks are held in your name, not the broker's name. If the broker fails, the Securities Investor Protection Corporation (SIPC) protects up to $500,000 per account (including $250,000 in cash). Your stocks are returned to you or transferred to another broker. This protection applies at any SIPC-member broker, which includes all major brokers.
Can I invest in stocks through my employer if I have a 401(k)?
Yes, but it is a different account. A 401(k) is a workplace retirement plan where you contribute pre-tax money and your employer may match a portion. You can also open a personal brokerage account or IRA separately. Many people do both: they contribute to their 401(k) to get the employer match, then invest additional money in a personal account for more control and flexibility.