Most people sit with the desire to leave for years. Three years, five years, sometimes a decade. The actual exit, when it finally happens, takes about ninety days. The gap between the wanting and the doing is not a financial problem. It’s a planning problem. Once there is a plan, the staying gets harder than the leaving.
Ninety days is artificial. It is also useful. It is short enough that you can hold the whole thing in your head, long enough to do the work, and long enough that no one can accuse you of acting rashly. Most people who sit at 365 days end up at 730. Pick a number, work to it.
This post assumes you have already decided. The arithmetic is done, the partner conversation is had, the FIRE number is met or you have accepted that it is met enough. What follows is the operational sequence.
Days 1–30: Audit and decide
The first month is paperwork and reconciliation. Nothing public, no announcements, nothing irreversible. You are building the file that lets you act.
Spending audit. Pull twelve months of credit card and bank statements. Categorize every line. Aim for a real number, not the budget you wish you had. For most readers this comes in lower than expected — Kevin, 44, in Minneapolis, projected $55,000/yr and discovered, when he actually pulled the statements, that he had been spending $43,800. The gap was eleven years of un-examined assumptions.
FIRE number recalculation. Take the audited spending. Multiply by 25 for the conservative version, by your honest-horizon withdrawal rate for the actual version (a 17-year horizon at 5.7%, for instance, gives you spending ÷ 0.057 rather than spending × 25). Compare against your current portfolio. The gap, if any, is your runway problem.
Runway math. If you are short, calculate how many months of bridge income you’d need before the portfolio carries you. If you are long, calculate how much margin you have for a 30% market drop in year one. Both numbers belong on a single sheet.
Healthcare research. If you are in the US, this means: ACA marketplace check at healthcare.gov, MAGI projection, COBRA cost for the first 18 months if you want it, expat options if relevant. Do not skip this. The healthcare line is the one that derails the most exits.
Partner conversation. If you have one, this is the month it happens. Not an announcement — a planning conversation. They get to ask every question, including the ones that hurt. You don’t leave the table until you both know the math.
By day 30 you have a binder, literal or digital, containing: audited spending, recalculated FIRE number, runway analysis, healthcare plan, and a partner who is either on board or has raised an objection you have answered.
Days 31–60: Prepare and announce
The middle month is the visible work. You start telling people, in order, and you write the documents.
Write the resignation letter. Do this on day 31, before you tell anyone. Short, dated, no explanation. Put it in a drafts folder. Knowing it exists changes how you carry yourself in meetings. The letter is procedural — the closure happens in your own head, not in a paragraph to your manager.
Set the date. Pick the last day. Not a range, not “sometime in Q2.” A specific Friday. Marie, 47, in Boston, picked March 27. Every decision for the next two months ran through that date.
Tell people in order. The order matters.
- Spouse or partner first (already done, but they get the date as soon as you set it).
- One or two closest friends — the ones who will hold this in confidence and ask hard questions. Not the chatty ones.
- Anyone whose practical help you’ll need — a sibling who’ll be your emergency contact, an accountant, a lawyer if the comp package is complicated.
- Your boss, LAST. This is the resignation conversation. Everyone else has been told first because everyone else gets to be told personally, not after the fact.
Notice period. Standard professional notice is two weeks in the US, longer in most of Europe. Give the appropriate amount for your role and country. Do not give six months “to be helpful.” You are not being helpful. You are postponing.
Healthcare paperwork. If you’re going ACA, you can’t enroll until after your employer coverage ends (it’s a Special Enrollment Period). But you can have the plan picked and the application drafted. If you’re going COBRA, the enrollment paperwork lands in your mailbox after your last day; you have 60 days to elect. Pre-decide.
By day 60: the resignation letter has been delivered or is scheduled, the date is public to the people who need to know, the post-coverage plan is queued up.
Days 61–90: Exit and transition
The last month is logistics and decompression preparation.
Transition the work. Document what only you know. Most people overestimate how irreplaceable they are; the documentation is for your own conscience more than for the company. Write the handoff doc as if you were going on parental leave: this is the system, this is the password vault, this is who calls when X breaks, this is the half-finished project and where the files live. Forty to sixty pages is normal. Spend one week on this.
Finalize benefits. Roll over the 401(k) — or schedule it for after the last day. Use up the FSA (this money is forfeit if you don’t spend it). Cash out unused PTO if your state requires it. Schedule any medical appointments that your good insurance pays for, before it ends.
Plan the first thirty days post-job. This is the step most people skip and most people regret. The first month off should not be a vacation. It should be a structure. Not a beach. A daily rhythm — when you wake up, what you do at 9 AM, where you walk, what you read. The reason is that the absence of structure, after 20 years of imposed structure, is genuinely disorienting. People who plan for it land softly. People who don’t plan find themselves drinking at 11 AM in week two, wondering what happened. Marcus, 47, ex-marketing director in Austin: his first 30 days had a printed schedule on the fridge. Walk at 7. Library at 10. Lunch at 1. Reading from 2 to 4. The schedule was almost certainly more rigid than he needed. He kept it anyway because he could see the cliff he’d otherwise fall off.
The last week. Hand off the laptop. Sign the exit paperwork. Have the awkward farewell coffee with the colleague who clearly wishes you weren’t going. Walk out at 5 PM on the Friday you wrote down two months ago.
Day 91 is Monday. You wake up. Your schedule says: walk at 7. You walk.
Pick a number, work to it
The 90 days is a container. Some readers will run it in 60, some in 120. The point is not the count. The point is that you have made the exit a project with a deadline, instead of a feeling you carry around for three more years.
The math is done. The decision is made. The remaining work is logistics, and logistics responds to dates. Pick a date. Work to it. The staying becomes harder than the leaving once the file exists.
Next in this series: the operational companion — The 90-Day Walk-Away Plan, week-by-week.
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