For an equity liquidity event, work through five tasks:
- identify the taxable transactions,
- project the household’s tax,
- reserve cash,
- decide how much company stock to keep, and
- reconcile the records.
Do the first three before spending or reinvesting proceeds.
1. List each transaction and its tax trigger
A single event can contain several transactions. An acquisition might cash out one award, replace another, and leave a third subject to vesting. List each one separately.
| Event | What to check |
|---|---|
| RSU settlement | Value, withholding, delivery terms |
| NSO exercise | Spread and withholding |
| ISO exercise and hold | Possible AMT, cash to pay it |
| Stock sale | Basis, holding period, gain or loss |
| Acquisition or tender | Awards bought, converted, canceled, or cashed out |
Use the actual offer, grant agreement, and company instructions. The IRS stock-options overview explains the different option treatments.
For each transaction, write down:
- the event date,
- shares involved,
- value used, and
- when cash or stock will arrive.
That record is the starting point for the tax projection.
2. Build one household tax projection
Include the transaction alongside salary, bonuses, a spouse’s income, other equity events, investment income, and deductions. Calculate federal and applicable state tax, then subtract expected withholding and estimated payments.
Keep two questions separate:
- How much tax will the household owe for the year?
- How much must be paid by each deadline?
A balance due with the return and an underpayment penalty are different issues.
Use the IRS estimated-tax rules to decide whether to adjust payroll withholding or make estimated payments. A large event late in the year can require an uneven-income calculation; do not assume paying at filing time is sufficient.
3. Separate tax money from spendable proceeds
The $90,000 is an illustration, not a suggested reserve percentage. Build the reserve from your actual projection:
| Cash check | Example |
|---|---|
| Cash after withholding | $500,000 |
| Extra tax to reserve | −$90,000 |
| Cash available | $410,000 |
Do not subtract withholding twice: it is already reflected in the cash received, and it must also be credited against the projected tax.
Keep near-term tax money in assets whose risk and access fit the payment deadline. A tax bill due soon should not depend on a stock recovering in time.
4. Decide how much company exposure to keep
Count retained shares, options, unvested awards, and employment income together. A sale can make the bank balance look diversified while much of the household’s future income and wealth still depends on one company.
Ask what a large price decline would do to your plans:
- Would it delay retirement?
- Would it change the house budget?
- Would it leave a tax payment unfunded?
Use that downside case to choose the exposure you can afford to retain.
5. Reconcile documents and assign the next actions
Keep these together:
- grant agreements,
- exercise confirmations,
- pay statements,
- Forms W-2 and 3921 where applicable,
- broker Forms 1099-B, and
- stock-plan basis supplements.
Check that income already taxed as compensation is reflected in the sale basis where required.
IRS Publication 525 explains the basis adjustments for stock options.
Finish with a short action list:
| Action | Confirm with | When |
|---|---|---|
| Finalize tax projection | Tax preparer or CPA | Before committing proceeds |
| Change withholding or payments | Payroll, tax preparer | Before the deadline |
| Confirm permitted sales | Plan administrator, company | Before placing an order |
| Reconcile income and basis | Tax preparer | Before filing |
| Update the plan | Household, any advisor | When price, timing, or income changes |
Nino’s software can help bring the household information together. If you want human help with the plan and tax work, its financial and tax services add a CPA and financial planner team.
Whichever tools or professionals you use, each action needs an owner and a date.