How to Start Investing When You Are Starting From Zero

$200 a month, invested in a low-cost index fund at a 7% average return, becomes about $14,300 after five years and $34,500 after ten. Most of the effort in getting there is four decisions made once, in the right order. The rest is not touching it.

Investing has a reputation for being complicated because the people selling it benefit from that reputation. For someone starting from zero, it comes down to which account, which fund, how much and how often. This guide takes them in that order, then shows the steps for opening an account and buying, and ends with the things worth ignoring in your first year.

If you want the background on why index funds sit at the center of this, read index funds explained alongside it. You do not need to read it first.

Before you invest the first dollar

Three things come before investing, and the order is not arbitrary. Each one protects the money you are about to invest from being pulled out at the worst moment.

A starter emergency fund. If a $900 car repair arrives in a month when the market is down 15%, you want to pay it from savings, not by selling investments at a loss. A starter fund of $1,000 to $2,000 in a savings account is enough to begin investing alongside. The full-size fund, worked out in how much emergency fund you need, can be built in parallel.

No credit card balances. A card charging 24% is a guaranteed 24% loss on every dollar you leave on it. No investment reliably earns that. Clear revolving balances first. Low-rate debts such as a 4% car loan or most federal student loans can wait while you invest.

Know whether you have an employer match. If your employer adds 50 cents for every dollar you put in a 401k up to 6% of pay, that is an instant 50% return. This is the one exception to the emergency fund rule: take the match even while the starter fund is still building.

The full sequence for every dollar, from the first $1,000 to extra mortgage payments, is set out in the financial order of operations. Investing occupies the middle of it.

Which account comes first

The account is the wrapper; the fund is what goes inside it. Wrappers decide how your money is taxed, and the tax difference over decades is large. For most people starting out, this is the order:

The 2026 limits come from IRS Notice 2025-67: $24,500 for employee contributions to a 401k, 403b or 457 plan, and $7,500 for an IRA, with higher catch-up limits from age 50.

Why a Roth IRA second rather than more 401k? Two reasons. A Roth IRA lets you choose any fund at any brokerage, while many 401k plans offer only a short, sometimes expensive menu. And the Roth's contributions, though not its earnings, can be taken back out at any time without tax or penalty, which makes it a forgiving first account for someone nervous about locking money away. Whether Roth or traditional suits your tax bracket is a separate question, worked in Roth vs traditional.

If you have no workplace plan at all, start at step 2. If you are self-employed, a SEP IRA or solo 401k plays the part of step 1.

One fund or three

A beginner needs one fund. Not because simplicity is a virtue in itself, but because one broad fund already holds thousands of companies, and adding more funds mostly adds decisions.

Three good single-fund choices:

• A target-date fund with a year near your expected retirement, such as a 2065 fund for someone in their twenties. It holds stocks and bonds, shifts toward bonds as the year approaches, and rebalances itself. It is the closest thing to a complete portfolio in one purchase. How they work, and what to check, is in target-date funds explained.
• A total US stock market index fund. Every listed US company, weighted by size. All stocks, so it swings more than a target-date fund.
• A total world stock index fund. US and international companies in one fund.

The three-fund portfolio is what many people graduate to: US stocks, international stocks and bonds, held in proportions you choose and rebalance yourself. It is a fine portfolio. It is not a better starting point than one target-date fund, and the extra work of rebalancing is where beginners make mistakes.

The number that matters most: cost

Every fund charges an expense ratio, a percentage of your balance taken each year. It sounds small. It compounds exactly like returns do, in the wrong direction.

Each figure is the future value of $200 a month for the stated number of months, compounding monthly at 7% less the fee: 6.95% for the cheap fund and 6.25% for the expensive one. Over thirty years the fee difference grows to more than $30,000 on the same contributions. Broad index funds from the large providers charge well under 0.10%. If a fund in your 401k charges more than 0.50%, look for a cheaper index option on the same menu. What expense ratios really cost has the full arithmetic.

How much and how often

How much: start with an amount you could keep paying through a bad month, then raise it. The usual long-run target for retirement is 15% of gross pay including any match, but nobody needs to start there. Starting at 4% to get the match and adding one percentage point every six months reaches 10% in three years without a single painful month.

How often: every month, automatically, on the day after payday. A fixed amount on a fixed date means you buy more shares when prices are low and fewer when they are high, without having to judge which is which. It also means the decision is made once, rather than every month when there is always a reason to wait.

People with a lump sum, an inheritance or a bonus, face a different question: invest it all now or spread it out. The evidence on that one is in dollar cost averaging vs lump sum. For someone investing from each paycheck, there is no lump sum to agonize over. The monthly amount is the plan.

A first-year investor, worked

A 26-year-old earns $52,400, with a starter emergency fund of $1,500 and no card debt. Their employer matches 50% of contributions up to 6% of pay.

• 401k: 6% of $52,400 is $3,144 a year, about $262 a month. The match adds $1,572 a year, about $131 a month. Invested in the plan's 2065 target-date fund.
• Roth IRA: $100 a month, automatic, into a total world index fund, raised to $150 at the next raise.
• Emergency fund: $150 a month to savings until it reaches three months of essential expenses.

Their own money going into investments is about $362 a month. With the match, $493 a month goes to work. At 7% before fees, roughly $85,000 after ten years, and they never picked a stock.

Opening the account and buying, step by step

The workplace plan is set up through your employer's benefits portal: choose a contribution percentage and a fund, and payroll does the rest. Check that the fund you chose is actually selected. Some plans put contributions into a default fund, sometimes a money market fund that barely grows, until you choose.

For a Roth IRA, the process takes about fifteen minutes at any large, low-cost brokerage:

1. Choose a brokerage. Look for no account fees, no minimum to open, a wide range of index funds or ETFs with no trading commission, and fractional shares. Confirm it is a member of SIPC.
2. Open the account. Choose "Roth IRA". You will need your Social Security number, a government ID, your employer's name and address, and your bank account and routing numbers.
3. Move money in. Link your bank and transfer the first contribution. It usually arrives in one to three business days.
4. Buy the fund. This is the step people miss. Money transferred into a brokerage account sits as cash until you buy something with it. Search the fund's ticker, enter the dollar amount, and place the order.
5. Automate it. Set a recurring transfer from your bank and, if the brokerage offers it, an automatic investment into the same fund on the same day.

The SEC's Introduction to Investing on Investor.gov covers the terms you will meet on the way, and FINRA's investor pages include BrokerCheck, where you can confirm a firm is registered before you send it money.

What a bad year looks like, before it happens

The test of a new investor is not choosing a fund. It is the first year the balance falls. Seeing the numbers in advance makes that year easier to sit through.

Say the 26-year-old above has built a $20,000 balance by year three when the market falls 25%. The balance drops to $15,000 on paper. Nothing has been lost unless they sell. Their $493 a month keeps buying, and it now buys shares at three quarters of last year's price, so each dollar picks up a third more shares than it did before the fall.

Broad stock markets have recovered from every past decline, sometimes within a year and sometimes over several. That is history, not a guarantee, and it is exactly why money needed within five years does not belong in stocks. But for money with a twenty-year horizon, the first row is the plan, and deciding that now, while nothing has fallen, is most of the work.

How the money is taxed in each account

The account you choose decides when tax is paid, and that shapes what you can do with the money later.

• Traditional 401k or IRA. Contributions lower your taxable income now. Growth is untaxed while it stays in. Withdrawals in retirement are taxed as ordinary income, and withdrawals before 59½ usually add a 10% additional tax.
• Roth 401k or Roth IRA. Contributions are made with money already taxed. Growth and qualified withdrawals after 59½ are tax free. Roth IRA contributions, though not earnings, can be withdrawn at any time.
• Taxable brokerage account. No tax break going in. Dividends are taxed each year, and gains are taxed when you sell. No limits and no withdrawal rules, which is its one advantage.

For a beginner the practical point is simple: fill the sheltered accounts first, because the tax saved compounds alongside the returns. A taxable account is for money beyond the limits, or for goals before retirement age.

What to ignore for the first year

Most beginner losses come from activity, not from choosing the wrong fund. A list of things that will feel important and are not:

• The daily balance. Over a single day, a stock fund is down nearly as often as it is up. Checking daily means watching losses on a large share of the days you look, which is how people talk themselves into selling. Look quarterly.
• Market forecasts. Nobody reliably predicts next year's market. A plan that depends on a forecast is a bet.
• Hot stocks, crypto and options. Not this year. If you want to try picking stocks, cap it at 5% of what you invest and treat it as tuition.
• Switching funds. Once you own a broad, cheap fund, there is almost nothing to gain by switching to another broad, cheap fund.
• Selling after a fall. A 20% drop in your first year is not evidence that you did it wrong. It is what stocks do. Your contributions in that year buy shares on sale.

Ignore, too, the feeling that you started too small. A first year of $100 a month produces a balance that looks trivial next to the numbers in this guide. The balance is not the point in year one. The automatic transfer that keeps running for the next thirty years is.

One thing worth doing once a year: raise the contribution. That single habit does more for the final balance than any fund choice in this guide.

When this does not apply

If you need the money within five years. A down payment, a wedding, a car. Money with a short deadline belongs in a high-yield savings account, CDs or Treasury bills, not stocks. A stock fund can be down 30% the month you need it.

If you carry credit card debt or payday loans. Pay those first, apart from capturing an employer match. The guaranteed return of clearing a 24% balance beats anything this guide can offer.

If your income is very low and unstable. When a month of no work would mean missed rent, the emergency fund is the investment. Start investing once there is a real cushion, and look at the federal match for low-income savers that begins in 2027.

If you have a complex situation. Equity compensation, a large inheritance, a business. The principles here still hold, but the account choices get technical, and a fee-only adviser paid by the hour can be worth the cost.

Next steps

1. Check the three prerequisites: starter fund, no card balances, match or no match.
2. Log into your benefits portal and set your 401k contribution to at least the match, in a target-date or broad index fund.
3. Open a Roth IRA this week and buy one broad index or target-date fund with the first deposit.
4. Automate both contributions for the day after payday.
5. Put a reminder on your calendar for six months from now to raise the contribution by one percentage point.