Home/Stories/Dana & Sam, software engineer and physical therapist, both 42
Case Study · 14 years of aggressive saving (ages 28-42)

How "Dana & Sam" Hit FIRE at 42 with a $1.4M Nest Egg

The math, the sacrifice, and the numbers behind a dual-income early retirement.

Persona
Dana & Sam, software engineer and physical therapist, both 42
Location
Austin, TX
Outcome
Retired Dec 2025 with $1,418,000 invested; plan calls for $49,600/year at 3.5% SWR.

Calculators used in this story

→ FIRE Number Calculator→ FIRE Timeline Calculator→ Coast FIRE Calculator→ Retirement Savings Calculator→ Compound Interest Calculator

The Awakening

Dana and Sam discovered the FIRE movement (Financial Independence, Retire Early) in 2012 through a popular blog post about Mr. Money Mustache. They were 28, newly married, earning a combined $138,000, and carrying $28,000 in leftover student debt. The idea that they could be financially independent by 45 — and maybe earlier — reframed every spending decision. They spent a weekend running their numbers through a FIRE number calculator. Their target annual spending was $45,000 in today's dollars, which at a 4% safe withdrawal rate meant they needed $1.125M. Adjusted for inflation and a more conservative 3.5% SWR they landed on $1.4M.

The Saving Rate

The FIRE math is straightforward but humbling. At a 10% savings rate you need 51 years to retire. At 50% you need 17 years. At 65% you need 10.5 years. Dana and Sam settled on a target of 55-60% savings rate. They ran it through CalcFi's FIRE timeline calculator: at 58% savings and 6% real returns, they would hit $1.4M in 14.2 years from age 28. That put their FIRE date at 42.3. Close enough.

The Accounts

They maxed Dana's 401(k), Sam's 403(b), both Roth IRAs, and Sam's HSA every year — a combined $44,000 in tax-advantaged contributions by 2015, growing to $63,500 by 2024 as limits increased. Everything above that went into a taxable brokerage invested in low-cost index funds (VTI and VXUS, roughly 70/30 US/international). The taxable account was critical: you cannot access 401(k) funds without penalty until 59.5, so they needed a "bridge" to cover ages 42-59.

The Lifestyle

They rented a modest two-bedroom until 2018 when they bought a $295,000 townhome with 20% down, locking in a 4.1% mortgage. They drove two paid-off sedans that lasted the whole accumulation phase — one a 2011 Corolla, the other a 2014 Mazda3. They cooked 80% of meals at home, took one domestic trip per year, and skipped cable. They did spend: $4,000/year on travel, $2,400/year on dining out, $1,800/year on hobbies (Sam cycled, Dana climbed). They were not extreme. They just lived like they earned $65k instead of $200k+.

The Market Tests

Three significant drawdowns tested their resolve: the 2018 Q4 correction, the March 2020 COVID crash, and the 2022 bear market. In March 2020 their portfolio dropped 31% in four weeks — roughly $195,000 evaporated on paper. They did not sell. They actually rebalanced into stocks by selling some of their bond allocation. By December 2020 they had fully recovered plus 12%. Every time they were tempted to change course they re-ran CalcFi's compound interest calculator to remind themselves that the long-term math does not care about a single year.

The Final Year

In 2025, with the finish line visible, they shifted strategy. They moved from 90% stocks / 10% bonds to 70% stocks / 25% bonds / 5% cash. This "glide path" reduced sequence-of-returns risk in the critical first five years of withdrawal, when a big drawdown can permanently damage a portfolio. They also built a two-year cash cushion of $98,000 in a 4.3% high-yield account so they would never be forced to sell stocks in a down year.

Life After

As of April 2026, four months into retirement, they are withdrawing $4,133/month. Dana is teaching one part-time coding class for $1,800/month — not for the money, but because she missed the structure. Sam is finally writing the novel he started at 23. They have not touched their principal yet; the dividends and the part-time income cover current expenses. Their projected depletion date at 3.5% real withdrawal is age 97, with a 94% portfolio survival rate per Monte Carlo simulations.

What They Got Wrong

Dana now says they over-saved in the final three years. They could have cut back to a 50% savings rate around 2022 and enjoyed life a bit more without delaying FIRE by more than a year. They also wish they had done a Roth conversion ladder earlier in their accumulation phase to give themselves more Roth flexibility in early retirement. Finally: the emotional side of retiring at 42 is harder than the financial side. Most of their peers are mid-career. Friendships require more effort when your weekday schedule does not match anyone else's.

Frequently Asked Questions

What savings rate do I need to retire in 10 years?+

Roughly 65%. At 50% you need about 17 years. The math comes from subtracting a percentage of spending replaced by investment returns each year.

What is the 4% rule?+

The rule states that withdrawing 4% of your starting portfolio, adjusted for inflation each year, has historically sustained a 30-year retirement in 95%+ of US market scenarios. Early retirees often use 3.25-3.5% for longer horizons.

How do early retirees access 401(k) money before 59.5?+

Via Roth conversion ladders (convert traditional IRA to Roth, wait 5 years, withdraw contributions tax-free) or 72(t) SEPP distributions. Taxable brokerage accounts remain the simplest bridge.

← Back to all case studies