The wire hit your account, the number is real, and for the first time in your career the question is not “when will this be worth something.” So why do most people freeze for the next three months and quietly make the most expensive mistakes of their financial lives?

A liquidity event is strange that way. You spent years waiting for it, and then it arrives and there is no manual. The IPO priced, the tender offer closed, the acquisition went through, and now a position you used to check obsessively is suddenly cash, or about to become cash, and nobody handed you a plan for the part that comes after.

This is that plan. Not a vague pep talk about staying calm, but a sequence for the first 90 days, in the order the decisions actually need to happen. The tax moves come first because they have hard deadlines. Diversification comes next because the risk is concentrated and the clock is running. Then the cash flow and lifestyle questions, and finally the longer-term setup for whatever comes next. Work it in that order and the rest of the year gets a lot calmer.

Days 1 to 30: cover the tax bill before you touch anything

The single most common liquidity-event mistake is spending money the government already owns.

A large vesting event or stock sale generates a tax liability that is almost never fully covered by what gets withheld. RSUs that vest at an IPO are typically withheld at the federal supplemental rate, which for most Bay Area tech employees sits well below their actual top marginal rate once federal, California, and the additional Medicare and net investment income taxes are layered on. The result is a withholding gap, and it can be enormous. People see a big number land, assume taxes were handled, and discover in April that they owe several hundred thousand dollars more.

So the first move is arithmetic, not investing. Estimate your real all-in tax on the event, compare it to what was actually withheld, and set the difference aside in cash before you do anything else with the money. We covered why the Bay Area high earner’s tax situation is different in a previous issue of Vested, and a liquidity event is that gap at its most extreme.

There are also deadlines here, which is why this is the 30-day job and not the 90-day one. Quarterly estimated tax payments have fixed due dates, and underpaying triggers penalties even if you pay in full by April. If your event involved exercising incentive stock options, the alternative minimum tax can apply to the spread, and that is a calculation you want done early, not discovered late. Get a tax projection done now, while there is still time to act on it.

Days 15 to 45: decide your diversification plan before you fall in love with the position

If your event left you holding stock rather than cash, you now own a concentration problem with a deadline attached to it.

The instinct is to hold. The stock got you here, holding feels loyal, and selling feels like a bet against the company and a tax event you would rather avoid. But as we discussed in the piece on why holding your company stock is not a strategy, a large single-stock position is a decision whether or not you make it on purpose. After a liquidity event the position is usually larger relative to your net worth than it has ever been, which means the risk is too.

The practical move is to decide on a target and a schedule, not to sell everything in a panic or hold out of inertia. Pick the percentage of your net worth you are willing to keep in the stock, then build a plan to get there over time. A pre-set selling schedule, often run through a written plan, takes the emotion and the market timing out of it. If you are still inside a post-IPO lockup, the plan starts the day the lockup ends, not the day you feel ready.

Taxes shape the sequence here too. The holding period that separates short-term from long-term capital gains can change your rate meaningfully, and there are strategies, including those we covered on selling concentrated stock without a giant tax bill, that can soften the cost of diversifying. Coordinate the selling plan with the tax projection from the first step so the two are not working against each other.

Days 30 to 60: decide what actually changes about your life

This is the step people either skip entirely or blow through in a weekend, and both are mistakes.

A liquidity event does not have to change your monthly life at all, and in the first 90 days it probably should not. The temptation is to upgrade everything at once, the house, the car, the spending, on the theory that you have arrived. The problem is that lifestyle costs are permanent and the windfall is not. A bigger house brings a bigger mortgage, higher property taxes, and more fixed cost every month, which quietly raises the bar for what you need the rest of your money to do.

So separate the one-time decisions from the recurring ones. Paying off a high-interest debt, funding a real emergency reserve, or making a single large purchase are one-time uses you can absorb. Permanently raising your monthly burn is the decision that deserves the most scrutiny and the least speed. Give the big lifestyle moves a deliberate waiting period inside these 90 days rather than committing in the first emotional weeks.

It helps to translate the windfall into the language of what it actually buys you, which is usually optionality rather than stuff. The number on the statement is a certain amount of future flexibility, the ability to take a lower-paying role, to start something, to step back. Spending it on fixed costs trades that flexibility away before you have decided whether you want it.

Days 60 to 90: set up the next chapter

With the urgent items handled, the last stretch is about building the structure the money now requires.

This is the moment to max out the tax-advantaged accounts you may have been neglecting, including the strategies we covered on sheltering an extra amount each year in a Roth, because a liquidity event year is often when the contribution and conversion math is most worth running. It is also when to revisit your investment plan as a whole, since the diversified proceeds need a destination, not just an exit from the old position.

Two pieces of longer-term planning tend to surface for the first time at this stage. The first is estate and beneficiary basics, which most people in their thirties and forties have never set up and which suddenly matter when there are real assets behind them. A will, updated beneficiary designations, and the right titling are not glamorous, but they are the difference between a plan and a pile. The second is charitable giving, which in a high-income liquidity year can be one of the most tax-efficient moves available, particularly when you give appreciated stock rather than cash.

None of this needs to be finished by day 90. The goal of the last 30 days is to have the structure started and the right people in place, so the next chapter is something you designed rather than something that happened to you.

The bottom line

A liquidity event is not the finish line. It is a 90-day window where a handful of decisions, made in the right order, determine how much of the windfall you actually keep and what it ends up buying you. Cover the tax bill first, set a diversification plan with a schedule, hold your lifestyle steady while you think, and use the final month to build the longer-term structure the money now deserves.