The Situation

Mateo is 44, an engineering manager at Microsoft in Redmond, and sixteen years into a career he's ready to wind down. Between salary, bonus, and RSU vests, his household brings in about $650,000 a year. He and his wife Carla, a school administrator, have done a lot right: both max their 401(k)s, Mateo participates in the ESPP, and they've built a net worth of roughly $2.8 million while raising two teenagers.

His goal was specific: stop working at 50. The problem was that his plan for getting there was a spreadsheet and a hope. Nearly half his net worth sat in MSFT stock, most of his savings were locked inside retirement accounts he couldn't touch until 59½, and he had no answer for what he and Carla would do about health insurance for the fifteen years before Medicare.

The Gap We Found

Nobody on Mateo's team was modeling the bridge years — the stretch from 50 to 59½ when the paychecks stop but the retirement accounts stay off limits. His CPA filed clean returns. His 401(k) sat in reasonable target-date funds. But no one had connected his concentrated MSFT position, his account structure, and his early-retirement date into a single plan. An early retirement funded 45% by one stock isn't a plan; it's a bet that MSFT cooperates for six more years.

[CHART: before/after bars — MSFT concentration cut from 45% to 24% of net worth]

What We Did

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First, defense. We set a sell-at-vest policy on new RSUs — shares sold immediately at vest carry almost no additional tax cost, so every future vest now funds the diversified portfolio instead of deepening the concentration. For the existing MSFT position, we built an 18-month staged unwind using specific lot identification, selling the highest-cost-basis lots first to keep capital gains small. Proceeds moved into a direct indexing portfolio, where tax-loss harvesting generated losses that offset most of the gains from the unwind itself.

Second, we built the bridge. Microsoft's 401(k) allows after-tax contributions with in-plan Roth conversion — the mega backdoor Roth — so Mateo now shelters an additional $34,750 a year in Roth dollars, and Roth contributions can be accessed before 59½. Alongside it, we sized a taxable brokerage account to carry ages 50 through 59½, and mapped a Roth conversion ladder for his first low-income retirement years — converting IRA dollars at rates he'll never see again while keeping income low enough to qualify for meaningful ACA health insurance subsidies. That one structure answered both the access problem and the healthcare problem.

Third, foundation. Alphanso's AI agents track each vest and unwind sale, calculate the quarterly estimated tax payment, and notify Mateo before every deadline — no April surprises during the transition. We also put a revocable living trust in place and updated beneficiaries across every account, which had last been reviewed when his teenagers were toddlers.

The Result

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• MSFT concentration cut from 45% to 24% of net worth over 18 months, with about $41,000 in harvested losses offsetting the gains from the unwind
• $34,750 per year in new tax-free retirement savings through the mega backdoor Roth
• A fully funded bridge plan: retirement at 50 now models at a comfortable success rate, with healthcare covered through ACA subsidy planning
• Mateo stopped guessing. He knows his number, knows the sequence, and for the first time his FIRE date is a countdown instead of a question mark

Why This Worked

Every piece of Mateo's finances was individually fine — and collectively pointed nowhere. The plan came together only when one team looked at the stock, the accounts, the taxes, and the timeline at once. Because Alphanso charges a flat fee, the advice to sell concentrated stock and spend down accounts carries no conflict; as fiduciaries, the only measure of success is whether Mateo actually retires at 50. If your early-retirement plan is a spreadsheet and a hope, we'd love to look at it with you: request a callback.

This case study is a composite illustration based on real Alphanso client scenarios. Names and identifying details have been changed for privacy. Results are not guaranteed and will vary based on individual circumstances. All investing involves risk, including the possible loss of principal. Alphanso LLC is a registered investment adviser.