Retirement Growth Calculator
Physicians start late but save heavy. See the power of compound interest hitting your portfolio.
Timeline
Money Inputs
Include 401k, Match, Roth, and Brokerage.
Clinical Context & Calculation Details
How to Use This Calculator
Input your current age, target retirement age, current retirement portfolio value, total expected annual contributions (401k + Backdoor Roth + Brokerage), and an estimated realistic rate of return.
The calculator projects your total portfolio value at retirement, separating out the money you actually contributed from the growth driven by compound interest.
Why Doctors Need This
Physicians usually don't start earning real money until their early 30s. This "late start" means missing out on a decade of compounding interest compared to college peers who started working at 22.
To overcome this, doctors must save a disproportionately high percentage of their gross income (usually 20% to 30%) to reach financial independence by age 60.
The Math Behind It
Future Value: The calculator applies the standard Future Value (FV) formula for both a present sum and a series of annuities: FV = PV(1+r)^n + PMT[((1+r)^n - 1)/r].
A classic, slightly conservative estimate for long-term annualized stock market growth (after inflation) is 5% to 7%. Historically, the S&P 500 has returned around 10% before inflation.
Pearls & Pitfalls
- Pearl: The "Rule of 72" roughly estimates how long it takes your money to double. If you assume a 7.2% return, your portfolio doubles every 10 years, even if you never add another dollar to it.
- Pitfall: Waiting until student loans are completely paid off before investing. Prioritizing low-interest debt (e.g., a 3% loan) over standard market returns (7%) mathematically stunts your retirement growth.
- Pearl: The "4% Rule" suggests you can safely withdraw 4% of your total portfolio each year in retirement to ensure you never run out of money. Therefore, if you need $200,000/year to live, you need a $5,000,000 portfolio.
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Editorial Credibility
J.R. Dunigan, DO | Family Medicine Physician & Founder
I founded MedMoneyGuide to provide physicians with unbiased, specialty-specific financial guidance. My goal is to add transparency and credibility to your financial journey.
Frequently Asked Questions
How much should a physician save for retirement?
A standard benchmark is to save 20% of your gross attending income. Because you start saving later in life, a higher savings rate is required to catch up.
What is the rule of 25 for retirement?
The Rule of 25 states you need 25 times your annual expenses saved to safely retire. If you want to spend $150,000 a year, you need a $3.75M portfolio.