Jonathan Lincicome

Tools · State

Multi-state equity compensation allocation

You moved states while equity was vesting. The general rule: income accrues ratably over the working days from grant to vest, so each state gets its share of the days. This worksheet does the day count.

Testing only — do not rely on these figures. The day-count and allocation logic behind this calculator has not been fully verified. This page is excluded from search engines until it is.

1 · Residency timeline

One work state per period — this tool assumes you worked where you lived. Periods should be contiguous and cover every allocation window below. Both dates are inclusive.

2 · Nonworking days

Weekends come out automatically. Holidays default to the federal calendar (observed dates; Juneteenth from 2021) — uncheck any your employer did not observe.

Sick, vacation, and custom holidays (employer days off beyond the federal calendar — a day after Thanksgiving, a winter shutdown), as date ranges. A range only counts weekdays that are not federal holidays, so two calendar weeks = 10 days. If you know the total but not the exact dates, enter a day count — it takes the earliest open weekdays inside the range, so the range only needs to bracket the right residency period.

3 · Grants and transactions

Allocation period per tranche: NY sources options over grant → vest (TSB-M-07(7)I); CA sources NQSOs over grant → exercise (FTB Pub. 1004). RSUs use grant → vest in both.

Multi-state equity compensation allocation — general workday method

Prepared · jonathanlinci.com

General method, not state-specific advice. This worksheet applies the general proportional workday method — income earned from grant to vest (or exercise), allocated by where the working days fell. It is designed to be consistent with the California (FTB Pub. 1004) and New York (TSB-M-07(7)I) approaches, but every state has its own sourcing rules, elections, and forms; New York's IT-203-B and IT-203-F will get their own dedicated calculators. It assumes you worked in your state of residence — it does not handle commuters, New York's convenience-of-the-employer rule, or trailing workdays in a former office state. Estimate only; not tax advice, and using it does not create a client relationship.
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