Investing

How to Start Investing: The First Five Steps

Starting to invest is mostly a sequencing problem. Money put into the market before an emergency fund exists tends to come back out at the worst moment, and money invested while carrying 20% credit card debt earns a guaranteed negative spread. The order below solves both before anything is bought.

Data snapshot

S&P 500

7,552

As of September 16, 2026 · S&P Dow Jones Indices via FRED

Year over year
+14.3%
12-month range
6,3447,799

The S&P 500 index. It tracks the largest US listed companies and is the benchmark most broad US equity index funds are built to replicate.

The order of operations

Build a starter cash buffer of one month's essential expenses. Capture the full employer retirement match, which is an immediate return on contribution. Clear high-rate debt above roughly 8-10%, because paying it off is a guaranteed, tax-free return.

Then finish the emergency fund at three to six months of expenses, fund an IRA, return to the employer plan up to the annual limit, and invest anything beyond that in a taxable brokerage account.

Choosing the account

Traditional accounts deduct now and tax withdrawals later; Roth accounts tax now and are tax-free later. Choose Roth when your current tax rate is low relative to what you expect in retirement, and traditional when the reverse holds. Contributing to both over a career gives you flexibility you cannot buy later.

An HSA, where you have a qualifying high-deductible health plan, is the only account with a deduction going in, tax-free growth, and tax-free qualified withdrawals. Where affordable, pay medical costs from cash flow and let the HSA compound as a retirement account.

Automate the contribution

Investing outcomes come from consistent contributions far more than from selection. Automation removes the monthly decision entirely.

  • Set a transfer for the day after payday, not the end of the month.
  • Turn on automatic dividend reinvestment.
  • Raise the contribution rate by one percentage point with each pay rise, before you adjust to the money.
  • Rebalance once a year on a fixed date, or hold a target-date fund and let it do so.
  • Do not check the balance daily; frequent checking increases the chance of selling in a downturn.

The mistakes that cost most

Selling during a decline converts a paper loss into a real one and usually misses the recovery. Chasing last year's best performer buys high by construction. Paying a percentage-of-assets fee for a portfolio you could hold in two index funds transfers a large share of your eventual balance to someone else.

The other quiet mistake is leaving cash uninvested inside a retirement account. Money contributed to an IRA is not invested until you buy something with it, and unnoticed cash balances sitting for years are common.

See what regular contributions become

Estimated balance after 20 years

$176,472

Total$176,472
Total contributed
$77,000
Interest earned
$99,472
If returns average 5.0%
$136,873
If returns average 9.0%
$230,412

Year-by-year projection

Contributions and compound growth split out for every year, so you can see when growth starts outpacing what you put in.

YearContributionsGrowthEnd balance
Year 1$8,600$479$9,079
Year 2$12,200$1,253$13,453
Year 3$15,800$2,344$18,144
Year 4$19,400$3,773$23,173
Year 5$23,000$5,566$28,566
Year 6$26,600$7,749$34,349
Year 7$30,200$10,350$40,550
Year 8$33,800$13,399$47,199
Year 9$37,400$16,929$54,329
Year 10$41,000$20,974$61,974
Year 11$44,600$25,572$70,172
Year 12$48,200$30,762$78,962
Year 13$51,800$36,588$88,388
Year 14$55,400$43,095$98,495
Year 15$59,000$50,333$109,333
Year 16$62,600$58,355$120,955
Year 17$66,200$67,217$133,417
Year 18$69,800$76,979$146,779
Year 19$73,400$87,707$161,107
Year 20$77,000$99,472$176,472
Share:

Compound interest formula

FV = P(1 + r/n)^(nt) + PMT × [(1 + r/n)^(nt) − 1] / (r/n)

Where:

  • FV = Future value
  • P = Principal (initial investment)
  • r = Annual interest rate (decimal)
  • n = Compounding periods per year
  • t = Time in years
  • PMT = Contribution per period

What this result is based on

This tool uses only the figures you enter and standard arithmetic. No external dataset feeds the result, so there is nothing to cite beyond the formula shown on the page.

This compound interest calculator compounds your starting balance and ongoing contributions at the rate of return you choose, then splits the ending figure between what you contributed and what the market added.

Compounding rewards time far more than timing, which the year-by-year table makes obvious.

Frequently asked questions

More frequently is better for you. Daily compounding beats monthly, which beats annually, although the difference is small compared with the rate itself.

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Frequently asked questions

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Sources