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Resident & Fellow Strategy

Low Income? Huge Opportunity.

Residency is the only time in your career you will be in a low tax bracket. This is the "Golden Window" to perform Roth conversions and file strategic student loan returns.

A guide by Taxstra Tax & Accounting — CPA-led tax strategy for business owners

Written by Bryan Martin, CPA, Managing Partner and Founder of Taxstra. Last updated June 10, 2026.

Quick answer

Residency is the cheapest tax window of a physician's career. While your bracket is low, prioritize Roth contributions and Roth conversions of old pre-tax accounts, treat moonlighting income as a business with its own deductions, and build the filing habits that matter later. The window closes permanently the day your attending contract starts.

Don't Wait Until Your Attending Check

Why 'I'll worry about money later' is the most expensive sentence in medicine

The biggest mistake residents make is thinking, "I'll worry about money when I make real money."

By waiting, you miss the chance to lock in 12% or 22% tax rates on Roth conversions. You miss the low-income tax filings that set your income-driven loan payments at their lowest. You develop bad spending habits that scale up with your income.

Key Insight
The habits you set with a $65k salary determine whether you retire with $2M or $10M.

"Almost every attending I meet wishes they had done two things in residency: started Roth contributions early and kept living on a resident budget for two more years."

Bryan Martin, CPA
Watch Out

The "I'll Do It Later" Cost

  • Forgetting to file a tax return as an MS4 (Result: your first loan payments get set from your intern salary instead of a $0-income return)
  • Choosing Traditional 401k instead of Roth during residency
  • Skipping the student loan interest deduction while your income still qualifies
  • Buying a 'Doctor House' immediately with a physician loan (House Poor)
  • Signing an employment contract without a review (Non-competes, Tail coverage)

The Resident Playbook

Strategies for future millionaires — build the foundation while the tax stakes are low

Roth Everything

You are in the lowest tax bracket you'll ever see. Pay the tax now. Stuff your Roth IRA and Roth 403(b). Your future high-income self will thank you.

The $0-Income Return

Filing a tax return in your final year of Med School (even with $0 income) documents the income your loan servicer uses for income-driven repayment. That return is what can set your Intern Year payments to $0/month instead of a payment based on your intern salary.

Moonlighting Management

Picking up shifts? That's 1099 income. Use it to open a Solo 401(k) or deduct your home office/computer/boards prep materials.

Disability Insurance

Get 'Own-Occupation' coverage now while you are young and healthy. Residency programs often offer simplified underwriting (no medical exam).

Contract Review

Before you sign your Attending contract, let us review the tax implications. Is the signing bonus structured as a loan? Is the productivity bonus achievable?

Live Like A Resident

The secret to wealth: Continue living on your resident budget for 2-5 years after becoming an attending. Use the surplus to destroy debt and buy assets.

The Roth Conversion Window

Buying tax-free growth at a massive discount — while the discount lasts

Maybe you worked before med school and have an old Traditional 401(k) or IRA.

As an attending, converting that to Roth would cost you 37%+ in taxes. But as a resident, you might only pay 12% or 22%.

We analyze "filling the bracket." We calculate exactly how much you can convert before bumping into the next tax tier. This is essentially buying tax-free growth at a massive discount.

Cost of a $50k ConversionTax Math
Tax Cost as Resident (22%)$11,000
Tax Cost as Attending (37%)$18,500
Tax Savings$7,500

Plus: That $50k grows tax-free forever. At 7% over 30 years, it becomes ~$380k tax-free.

Learn About Roth Conversions

Your Year-by-Year Tax Checklist

What to actually do, from MS4 through your first attending contract

Tax planning in training isn't one decision — it's a short sequence of small, dated moves. Miss one, and you can't go back for it. Here's the sequence we walk residents through.

MS4 / final year of med school. File a federal tax return even if you earned nothing. It feels pointless — it isn't. That $0-income return is what your loan servicer uses to set your income-driven repayment amount when you certify as an intern, which is how residents end up with $0/month payments during intern year. Skip the return, and your first-year payments get calculated off your intern salary instead.

Intern year. You only earn a half year of salary — often $30,000–$35,000 of taxable income — which can leave you in the 12% federal bracket. That makes intern year the single cheapest year of your life to fund Roth accounts and convert old pre-tax balances. Open a Roth IRA, contribute what you can, and if your program offers a Roth 403(b), point your deferrals there.

PGY-2 and PGY-3. Claim the student loan interest deduction while you still qualify — it's an above-the-line deduction of up to $2,500, and the income phase-out means most attendings lose it forever. If you're married (or about to be), have someone run the filing-status math before you file — the wrong checkbox can raise your loan payment by more than it saves in tax. We cover that on our student loan tax strategy page.

Final year of training. This is the last call for cheap Roth conversions. The year you finish is a split year — half resident salary, half attending salary — so the bracket math has to be done on projected full-year income, before December 31, not at tax time. It's also when your signing bonus lands: it's fully taxable, and employers routinely under-withhold on it, so set aside 30–40% before you spend a dollar.

Key Insight
Worked example: a PGY-3 earning $70,000 with $40,000 sitting in an old Traditional IRA converts it all and pays roughly $8,800 of federal tax at 22%. Wait two years until attending income pushes the same dollars into the 35% bracket, and that conversion costs about $14,000. The window closes the day your attending contract starts — and it never reopens.

Moonlighting in Residency

Extra shifts are 1099 income — which means business deductions, if you claim them

Moonlighting pay almost always arrives on a 1099, not a W-2. That makes you a sole proprietor with a Schedule C — and it changes which expenses count.

Board exam fees and prep materials used for the moonlighting work, DEA and state license costs allocable to it, malpractice premiums you pay for those shifts, and a home office where you do your charting can all be deducted against the 1099 income. A resident earning $15,000 moonlighting who claims $3,000 of legitimate expenses and puts part of the remainder into a Solo 401(k) keeps dramatically more of every shift.

Taxstra CPA Tip
Moonlighting income also means quarterly estimated taxes — nobody is withholding for you. Set aside a percentage of every check the day it arrives. When the income grows past residency into real attending side-gig money, the entity question comes next: see our moonlighting entity structure guide.

Resident Tax FAQ

Common questions from residents and fellows

Buying a house during residency is usually a mistake. You'll likely move for fellowship or your first job, and transaction costs (roughly 6% to sell) will eat any equity you build. Renting buys you flexibility. If you MUST buy, keep it well within budget.

Start Strong.

The decisions you make in residency compound for decades. Let's get them right.

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