Investing

How to start investing with $100

A first $100: 401(k) match if you have it, otherwise a low-cost index or target-date fund in a Roth IRA. Skip the stock-picking app.

Updated 2026-09-08 · 8 min read

The $100 is not the point

The point is the automatic transfer that follows it. Open the account, buy a target-date or total-market fund, and set $50–$100 to land on payday. The first share is a doorstop for the habit.

If your job offers a match, the first $100 belongs there, not in an app with options trading.

What to buy

In a 401(k): the target-date fund closest to the year you turn 65, expense ratio under 0.15% if available. In an IRA: a total US stock index, or a target-date fund if you want bonds included automatically.

Run the numbers: open calculator.

Questions

Do I need $1,000 to open an IRA?

No. Many brokers have $0 minimums and fractional shares. $100 is enough to be invested.

Should I pick stocks?

Not with the first $100. A broad index or target-date fund is the whole strategy until contributions are a habit.

What if I still have credit-card debt?

Capture a 401(k) match, keep a small cash buffer, then attack 20%+ APR balances before a taxable brokerage.

Keep reading

Educational only. Verify IRS limits and loan quotes before acting. Logged in NOTES.md on 2026-09-08 (calculators + SEO guides pass).