Funding the bridge years: paying for retirement before 59½

Every early retirement has the same structural problem: your spending starts the day you quit, but penalty-free access to most retirement accounts starts at 59½, Social Security no earlier than 62, and Medicare at 65. The years in between are the bridge years, and they need their own funding plan — not because the money doesn't exist, but because it's locked in the wrong containers. Plenty of people with $1.5 million portfolios can't retire at 52; plenty with $1.1 million can. The difference is almost always how much of it sits on the accessible side of the bridge.

Step one: size the bridge

The bridge is a simple product: annual spending × years until 59½ (or until another income source arrives). Retire at 52 spending $70,000 a year, and you need roughly 7.5 years × $70,000 = $525,000 of accessible money — before assuming any growth, and before taxes on realizing it. Add a buffer for the known landmines of the period: health insurance premiums before Medicare (often $10,000-$20,000 per year for a couple, less with ACA subsidies), and the fact that early-retirement years are typically your most expensive, not your cheapest.

The taxable account is the load-bearing wall

For most early retirees the taxable brokerage account does the heavy lifting, and it's better at the job than people expect. When you sell, you're only taxed on the gain — and for a married couple with little other income, long-term gains are taxed at 0% up to roughly $94,000 of taxable income (2024 figure, indexed annually). A $70,000 withdrawal from a position that's 50% basis generates just $35,000 of gains, likely taxed at zero. This is the great irony of the bridge years: they're often the lowest-tax years of your entire life, which is also what makes them prime territory for Roth conversions if you have income room to spare.

Sequencing: the standard playbook

1. Spend dividends and interest from taxable first — they're taxed whether you spend them or not, so turn off reinvestment the day you retire.
2. Sell taxable holdings next, highest-basis lots first to minimize realized gains.
3. Tap Roth IRA contributions if taxable runs thin — free to withdraw, but spend them reluctantly; Roth space is irreplaceable.
4. Start the Roth conversion ladder early if your bridge outlasts your taxable money — each conversion needs five tax years to season.
5. Hold 72(t)/SEPP and the rule of 55 as structural fallbacks, not the plan — they're rigid, and breaking a SEPP schedule triggers retroactive penalties on every prior withdrawal.

Building the bridge while you're still working

If early retirement is 5-10 years away, the sizing math tells you where new savings should go. Once you're capturing the full employer match and maxing tax-advantaged space, the classic advice is 'then taxable brokerage' — but aspiring early retirees sometimes need to prioritize taxable even before maxing every retirement account, because a bridge shortfall is a harder problem than a slightly smaller 401(k). A useful check: divide your accessible assets by your planned annual spending. If the answer is smaller than the years between your retirement date and 59½, every marginal dollar belongs in taxable or Roth contributions until it isn't.

The health insurance line item

No bridge plan is complete without pre-65 health coverage. ACA marketplace subsidies key off your realized income, not your wealth — and a taxable-first strategy keeps realized income low, which can cut premiums dramatically. This creates a genuine tension: every dollar of Roth conversion raises income and shrinks subsidies, effectively adding 10-15% to the conversion's cost in lost credits. Most planners resolve it by converting less during subsidy years than pure bracket-filling would suggest, then converting harder between 65 and RMD age. The right answer is household-specific, but the wrong answer is discovering the interaction in April.

The bottom line

Retiring before 59½ is a plumbing problem: the wealth exists, but it must flow from accessible containers in the right order. Size the bridge (spending × years), fund it primarily with a taxable account and Roth contributions, run conversions through the low-income window with one eye on ACA subsidies, and keep the rule of 55 and 72(t) as fallbacks rather than foundations. Start checking the accessible-assets-to-spending ratio five years before your date — because the couple who builds the bridge on purpose retires when they choose, and the one who doesn't retires when the containers allow.