Investing in Your 20s: How to Start and What to Buy

June 16, 2026 3 min read

Your 20s are the most powerful decade for investing. Every dollar you invest now is worth $15-20 by retirement. Every year you wait costs you hundreds of thousands.

Here’s exactly how to invest in your 20s.

Investing in your 20s — power of time, portfolio allocation, and expected returns

Why Your 20s Matter Most

The Power of Time

Start AgeInvest/MonthAt Age 65Total InvestedGain
25$500$2,610,000$240,000$2,370,000
30$500$1,610,000$210,000$1,400,000
35$500$1,000,000$180,000$820,000
40$500$600,000$150,000$450,000

Starting at 25 vs 35 = $1.01 million more. That’s the cost of waiting.

Your 20s Financial Checklist

PriorityActionWhy
1Get employer 401(k) matchFree money (100% return instantly)
2Build $10K emergency fundDon’t invest emergency money
3Open Roth IRATax-free growth for decades
4Invest 15-20% of incomeBuild wealth consistently
5Pay off credit cards20%+ interest kills wealth

What to Invest In

FundAllocationWhy
VTI (U.S. Stocks)80%Captures entire U.S. market
VXUS (International)15%Diversification outside U.S.
BND (Bonds)5%Stability cushion

Expected return: 10-12% annually Risk: High (but you have 40+ years to recover)

Why This Works

  • Low cost: 0.03-0.07% expense ratio
  • Fully diversified: 10,000+ stocks worldwide
  • One-fund simplicity: No rebalancing needed
  • Proven: Tracks the global stock market

How Much to Invest

Rule of Thumb: 15% of Gross Income

Income15% SavedMonthly40-Year Value
$40,000$6,000$500$2.6M
$50,000$7,500$625$3.3M
$60,000$9,000$750$3.9M
$75,000$11,250$938$4.9M

If You Can’t Do 15%

SituationMinimumBetter
Just starting$100/month$250/month
Building emergency fund$50/month$100/month
Paying off debt$50/month$100/month
Stable income$500/month$1,000/month

Where to Open Accounts

AccountBest ForMinimum
Roth IRATax-free growth$0
401(k)Employer matchVaries
Taxable brokerageExtra investing$0
BrokerBest ForFees
FidelityAll-around$0
VanguardIndex fund purists$0
Charles SchwabFull-service$0
M1 FinanceAutomated portfolios$0

Common 20s Mistakes

MistakeWhy It Hurts
Not investing at allMissing compound growth
Picking individual stocksUnderperform index funds
Checking dailyLeads to panic selling
Waiting to investCosts $100K per year delayed
Paying off low-interest debtStudent loans at 4% < stock returns

Summary

Key PointTakeaway
Start nowEvery year costs $100K+
15% of incomeThe target savings rate
80/15/5VTI/VXUS/BND portfolio
Roth IRABest account for 20s
Keep it simpleIndex funds beat stock picking
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This content is for educational purposes only. Not financial advice. Do your own research before investing.