Should You Pay Off Student Loans or Invest? A Framework for Attorneys

The average law school graduate leaves with around $130,000 in debt. Many BigLaw associates owe $200,000 or more. And the moment you start earning a real salary, you face a question that will follow you for years: should you throw every extra dollar at your loans, or invest it instead?

The internet is full of advice on this. Most of it is useless for attorneys, because most of it assumes you have a normal income trajectory and normal debt levels. You have neither.

Here's a framework for thinking through this decision in a way that actually fits your situation.

The mathematical answer

In pure numbers, the question is straightforward: compare your loan interest rate to your expected investment return.

If your student loans carry a 7% interest rate and you expect long-term stock market returns of around 7% to 10%, the math is close. Every dollar you put toward your loans earns a guaranteed 7% return (the interest you're no longer paying). Every dollar you invest has an expected return that's slightly higher but not guaranteed.

If your loans are at 4% or less (federal loans from certain years, or refinanced private loans from the low-rate era), investing likely wins mathematically. You'd be giving up expected returns of 7% to 10% to eliminate debt costing you 4%.

If your loans are at 8% or higher, paying them down likely wins. Guaranteed 8% returns are hard to beat.

This is Finance 101. But if you stopped here, you'd be missing most of what actually matters.

What the math leaves out

The mathematical comparison assumes you'll actually invest the money you don't put toward loans. In practice, money that isn't earmarked for a specific purpose tends to get spent. The associate who decides to invest instead of paying extra on loans often ends up doing neither, because the money leaks into lifestyle.

The math also ignores taxes. Student loan interest is deductible up to $2,500 per year, but this deduction phases out entirely for single filers earning over $90,000. As a BigLaw associate, you get zero tax benefit from your student loan interest. Meanwhile, contributions to tax-advantaged retirement accounts like 401(k)s reduce your taxable income at your marginal rate, which for NYC associates is often 45% or higher when you combine federal, state, and city taxes.

This changes the calculus significantly. A dollar invested in your 401(k) might only "cost" you 55 cents after the tax savings. A dollar paid toward student loans costs you the full dollar.

The psychological dimension

Numbers aside, debt has a psychological weight that doesn't show up in spreadsheets.

Owing $180,000 affects how you think about your career. It makes you more risk-averse. It makes leaving BigLaw feel impossible even when you're burning out. It creates a background hum of anxiety that persists even when you're objectively fine.

For some people, eliminating that debt as fast as possible is worth sacrificing some theoretical investment returns. The freedom of owing nothing has real value.

For others, watching an investment account grow provides more psychological comfort than a shrinking loan balance. Seeing $100,000 in your brokerage account feels like progress even if you still owe $150,000.

Neither response is wrong. But you need to know which type you are before you can make a good decision.

The attorney-specific factors

Several aspects of an attorney's financial situation make this decision different from the generic advice:

High marginal tax rates. If you're earning $250,000 or more in a high-tax state, your marginal rate approaches 50%. This makes tax-advantaged investing extraordinarily valuable. Maxing out your 401(k) saves you roughly $12,000 in taxes annually. That's money you keep that you'd otherwise send to the government.

Limited time at peak earnings. BigLaw salaries are high, but BigLaw careers are often short. The median tenure is around five years. If you leave for a lower-paying job, you lose access to your current savings capacity. This argues for maximizing tax-advantaged contributions while you can.

High debt levels. The sheer size of attorney debt means it can take a decade to pay off even with aggressive payments. Waiting until it's gone to start investing means missing years of compounding during your highest-earning period.

Income trajectory uncertainty. If you make partner, your income might double or triple. If you leave for government or public interest work, it might drop by 60%. This uncertainty affects how aggressively you should pay down fixed-rate debt.

A practical framework

Given all of this, here's how to think through the decision:

Step 1: Capture your full employer match.

If your firm offers a 401(k) match, contribute at least enough to get the full match. This is free money. There's no scenario where paying loans instead makes sense if it means leaving matching dollars on the table.

Step 2: Build a minimal emergency fund.

Keep three months of essential expenses in cash before aggressively paying down debt or investing. Without this buffer, any unexpected expense goes on a credit card at 20%+ interest, which defeats the entire purpose.

Step 3: Compare rates and consider taxes.

If your loan rate is above 7%, prioritize paying it down after the first two steps. The guaranteed return is too good to pass up.

If your loan rate is below 5%, prioritize maxing out tax-advantaged accounts (401(k), backdoor Roth IRA, HSA if available). The tax savings and expected returns outweigh the loan interest.

If your rate is between 5% and 7%, this is the gray zone. Either choice is defensible. Consider the psychological factors and your personal risk tolerance.

Step 4: Factor in your timeline.

If you're confident you'll stay in BigLaw for many years, you have more flexibility. You can afford to invest aggressively knowing future high earnings will eventually eliminate the debt.

If you're planning to leave within a few years for a lower-paying path, consider paying down loans more aggressively now while your income supports it. Carrying $150,000 in debt into a $90,000 job is much harder than carrying it into a $300,000 job.

Step 5: Don't let the decision paralyze you.

The difference between the "optimal" strategy and a "pretty good" strategy is smaller than the difference between doing something and doing nothing. If you're saving 20% of your income, whether that goes to loans or investments matters less than whether you're saving at all.

The hybrid approach

For most attorneys in the gray zone, a hybrid approach makes sense:

• Max out your 401(k) ($23,500 in 2025)
• Fund a backdoor Roth IRA ($7,000 in 2025)
• Put everything else toward loans until they're gone

This captures the tax benefits of retirement accounts while making meaningful progress on debt. It's not mathematically optimal in every scenario, but it's robust. It works whether the market goes up or down, whether you stay in BigLaw or leave, whether rates rise or fall.

When to revisit

Review this decision annually and whenever your circumstances change significantly:

• Loan interest rate changes (refinancing, rate adjustments)
• Income changes (promotion, job change)
• Tax law changes
• Major life events (marriage, children, home purchase)

What makes sense as a first-year associate might not make sense as a fifth-year or as a new partner.

The bottom line

There's no universally correct answer to the loan-versus-invest question. The right choice depends on your interest rates, your tax situation, your risk tolerance, your career plans, and your psychological relationship with debt.

But there is a universally correct principle: do something. The associates who spend years debating the optimal approach while making minimum payments and not investing are the ones who fall behind.

Pick a strategy that makes sense for your situation. Execute it consistently. Revisit it annually. That discipline matters more than finding the theoretically perfect allocation.