Investing After College: Building First Portfolio
First real salary? Here is how to set up your investment accounts, handle student loans, and start building wealth on day one.
Don't have time? Here's what you need to know:
- 1Set up your 401(k) and Roth IRA during your first week at a new job — before lifestyle inflation kicks in
- 2Always get your full employer match; it is a 50-100% guaranteed return
- 3For student loans under 6%, invest and pay loans simultaneously; above 7%, prioritize the debt
- 490-100% stock allocation is appropriate at 22-25 with a 40-year time horizon
Your First-Salary Game Plan
Your first post-college paycheck feels enormous compared to the part-time wages or stipends you survived on in school. Before lifestyle inflation swallows it, automate your financial system on day one. Most employers let you set up 401(k) contributions during onboarding — do it before you get used to the bigger number in your checking account.
Target allocation of your take-home pay: 401(k) up to employer match (typically 3-6% of salary, deducted pre-tax), then $200-500 per month to a Roth IRA at Fidelity or Schwab, 10% to a high-yield savings emergency fund until you hit 3 months of expenses, and the rest covers rent, loans, and living.
Student Loans and Investing: The Math
The question is not whether to invest or pay loans — it is how to split your dollars between both. For federal student loans at 4-5% interest, invest simultaneously. The stock market has historically returned 10% before inflation and about 7% after. On a probability basis, investing beats prepaying a 4.5% loan.
For private loans above 7%, tilt toward aggressive repayment. But always — always — get your full 401(k) employer match first. A 50% match on 6% of a $55,000 salary is $1,650 in free money per year. No loan repayment strategy can beat a guaranteed 50% return.
| Loan Interest Rate | Strategy | Reasoning |
|---|---|---|
| Under 4% | Invest aggressively, pay minimum on loans | Market returns far exceed loan cost |
| 4-6% | Split 50/50 between extra payments and investing | Close enough to go either way |
| 7-10% | Pay down loans aggressively, invest 401(k) match only | Guaranteed high return on debt payoff |
| Above 10% | All extra money to loans, only invest for 401(k) match | No investment reliably beats 10%+ |
Your First Real Portfolio
In your 401(k), pick the lowest-cost S&P 500 or total market index fund your plan offers. Many employers use Fidelity, Vanguard, or Schwab — check the expense ratios and choose the cheapest option. In your Roth IRA, buy VTI (total U.S. market) or split between VTI and VXUS (international) at 80/20.
At 22-25, a 90-100% stock allocation makes sense. You have 40 years to ride out corrections. Adding bonds now just lowers your expected return with no practical benefit. Re-evaluate the stock-bond split in your mid-30s, or simply use a target-date fund in your 401(k) that adjusts automatically.
Tip: Set your 401(k) to auto-escalate contributions by 1% per year. In 5 years you will be contributing 5% more than you started — and you will not feel the gradual increase.
Frequently Asked Questions
How much should I contribute to my 401(k) right out of college?
At minimum, enough to get your full employer match (typically 3-6% of salary). Ideally 10-15% of your salary if you can manage it. If that feels too high, start with the match and increase by 1% every 6 months until you hit 15%.
Should I open a Roth IRA if I already have a 401(k)?
Yes. They serve different purposes. The 401(k) gives you a tax deduction now and employer matching. The Roth IRA gives you tax-free withdrawals in retirement. Having both provides tax diversification — you can choose which to draw from based on your tax situation in retirement.
I have $30,000 in student loans. Should I invest at all?
Yes. At a minimum, invest enough to get your 401(k) match. If your loans are under 6% interest, investing additional money beyond the match makes mathematical sense. The key is having a plan for both — do not ignore loans, but do not skip investing either.
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Alex Harrington
CFA Level II Candidate, Finance & Economics
Alex Harrington is an independent ETF researcher and personal finance writer with over 8 years of experience analyzing exchange-traded funds. A CFA Level II candidate with a background in economics, Alex has reviewed 800+ ETFs and helped thousands of beginners build their first investment portfolios through clear, jargon-free education.
This content is for educational purposes only and does not constitute financial advice. Past performance does not guarantee future results. Consult a licensed financial advisor before making investment decisions.