Moved States Mid-Year With Equity? How Your RSUs Are Taxed

If you moved states mid-year with equity, your RSU and option income is generally sourced to where you performed the work during the vesting or earning period — not just where you live when it vests. That means your old state can still tax a share of the income even after you leave, based on work-day allocation.

Relocating feels like it should reset your state tax — new state, new rules. With equity comp it doesn't work that way. The income was earned over a vesting period that may span two states, and states allocate it by where you worked, not just where you landed. As the California FTB frames equity earned for in-state work:

"California taxes the wage income received by a nonresident from employee stock options on a source basis, whether you were always a nonresident or were formerly a California resident."

— California FTB, Stock Options and Equity-Based Compensation This guide explains how that allocation works, why your old state can still come calling, and whether you'll be taxed twice.

Residency vs Sourcing — Two Different Questions

The first thing to untangle is that residency and sourcing are two separate questions, and your equity-comp tax bill turns on both. Residency asks which state you live in; sourcing asks which state the income belongs to. You can be a full resident of one state and still owe tax to another because the income was sourced there.

For equity comp, sourcing usually wins the argument. RSUs are ordinary income when they vest (IRS Publication 525), but the right to that income was earned over the vesting period — so a state where you worked during that period can claim a slice even if you've since moved away. The same earned-over-time logic applies to options, which the IRS treats as compensation tied to the services you performed (IRS Tax Topic 427). Our state income tax guide covers the resident-side rates; this post is about what happens when two states have a claim at once.

How Equity Income Is Sourced When You Moved States Mid-Year

When you move mid-vesting, states generally split your RSU or option income using work-day allocation: the fraction of the vesting (or earning) period you spent working in each state. If half your vesting period's work-days were in your old state, roughly half that vest can be sourced there.

A simple illustration: an RSU tranche vests after a 4-year period, and you worked the first 2 years in your old state and the last 2 in your new one. Under work-day allocation, about half the vest income is sourced to the old state and half to the new — regardless of which state you lived in on the vest date. The same logic extends to NSO exercises (earned over the vesting period) and is why how RSUs are taxed at the federal level is only half the story once a move is involved. States publish their own allocation methods, so the exact formula varies — New York, for instance, has detailed nonresident allocation rules of its own.

What counts as a "work-day" matters more than people expect. The allocation fraction is built from the days you actually performed services in each state during the vesting period — not calendar days, and not where the shares happened to be administered. Remote-work days are sourced to where you physically worked, which for a relocated employee usually means the new state. The practical implication: keep a record of when you moved and roughly how your work-days split across the vesting window of each grant. If you can't reconstruct it, states will often default to a less favorable assumption, and you'll have no basis to push back. A grant-by-grant table of vesting start, move date, and vest date is the single most useful document you can hand a preparer.

Your Old State Can Still Tax You (Trailing Nexus)

The hardest surprise is trailing nexus: your old state continuing to tax equity that vests after you've moved, because the income was earned while you worked there. California is the headline example. Its Franchise Tax Board takes the position that equity compensation earned for services performed in California remains California-source income, apportioned by California work-days during the vesting period (California FTB, Stock Options and Equity-Based Compensation).

In practice, that means moving from California to another state on January 1 does not erase California's claim on RSUs that vest in March if the vesting period included California work-days. The chart below puts the state-rate spread in context, which is what makes the trailing claim worth real money.

The deeper mechanics of California's aggressive sourcing — including its residency safe-harbor and the work-day formula — are in our California income tax guide. The takeaway: the bigger the share of your vesting period spent in a high-tax state, the bigger that state's trailing claim, no matter where you live now.

If You Moved States Mid-Year, Will You Be Double-Taxed?

The good news is that you're usually not truly double-taxed, because your state of residence generally gives you a credit for tax paid to another state on the same income. So if your new resident state taxes the full vest but your old state also taxes its work-day share, the resident state typically credits the tax you paid to the old state — you end up paying roughly the higher of the two rates, not the sum.

The chart is a reminder that the federal rate dominates the bill regardless of state; the state piece is the part the move affects. The credit isn't automatic, though — you claim it by filing the right returns (often a nonresident return in the old state and a resident return in the new one), and the mechanics vary, so confirm your effective combined rate with our RSU tax rate guide. Note too that if you exercised ISOs around your move, the AMT picture follows its own federal rules layered on top of the state allocation.

One important limit on the credit: it generally only covers tax paid to the other state on the same income, and it's usually capped at what your resident state would have charged on that income. So if you move from a low-tax state to a high-tax one, the credit fully absorbs the old state's bite; if you move from a high-tax state to a lower-tax one, your resident state's credit may not be large enough to offset the full amount the high-tax old state claims — and you can end up paying close to the higher rate overall. The direction of your move, not just the fact of it, shapes the result.

Which Returns You Actually File After Moving

After a mid-year move you typically file two state returns: a part-year resident return in each state for the portion of the year you lived there, plus a nonresident return wherever you owe tax on sourced income but didn't live. For equity that vests after the move, the old state's slice is reported on its nonresident return, while the full amount flows through your new resident return with a credit applied.

The sequencing matters because you generally compute the other-state tax first, then claim the credit on your resident return — file them out of order and the credit math won't tie out. Gains on selling the shares later are a separate, cleaner question: a straight capital gain is generally sourced to your state of residence at the time of sale (IRS About Schedule D), so post-move appreciation usually belongs entirely to your new state, even though the vest income that set your basis may have been split. Keeping the compensation piece and the investment piece mentally separate is half the battle.

Moving to a No-Income-Tax State

Relocating to a state with no income tax — Texas, Washington, Florida — is a genuine win going forward, but it does not wipe out your old state's claim on equity you already earned there. The income sourced to your old state during its work-day share remains taxable by that state even after you become a resident of a no-tax one.

So the benefit is prospective: equity earned entirely while working in Texas or Washington carries no state income tax, but a vest whose earning period straddled your old high-tax state is still partly sourced there. The cleanest state-tax outcome comes from equity granted and vested while you work in the no-tax state — which usually means a move well ahead of the vesting period, not right before a vest.

This is why timing a move "right before a big vest" so often disappoints. If you spent three of a four-year vesting period in California and move to Texas a month before the shares deliver, only that final sliver of work-days is Texas-sourced; the bulk is still California-source income under the trailing rule. The lever that actually works is lead time: the earlier in a grant's life you relocate, the larger the no-tax state's share of the work-days, and the smaller the old state's claim. For someone planning a move with substantial unvested equity, modeling the work-day split grant by grant — before choosing a move date — can be worth far more than the moving costs. And remember Washington's wrinkle: while it has no ordinary income tax, it does levy a capital-gains excise above an annual threshold, so the sale side of your equity may not be entirely tax-free even there.

Frequently Asked Questions

Does my old state tax my RSUs after I move? Often yes. If your vesting period included work-days in your old state, that state can source a share of the vest to itself and tax it, even though you've moved away.

How are RSUs taxed if I move states? The vest income is generally allocated between states by the fraction of the vesting period's work-days spent in each, not solely by where you live when it vests.

Will I be double-taxed? Usually not. Your resident state typically gives a credit for tax paid to another state on the same income, so you pay roughly the higher of the two rates rather than both stacked.

Does moving to Texas before vesting avoid state tax? Not entirely. A no-income-tax state shields income earned while you work there, but your old state can still claim its work-day share of a vest whose earning period straddled the move.

Get the Allocation Right

Multi-state equity allocation is one of the few areas where the numbers genuinely require a professional — work-day records, part-year and nonresident returns, and each state's specific formula all matter, and getting them wrong invites an audit. Model your federal picture so you know the size of the stakes, then bring a preparer who handles multi-state equity into the actual allocation. This is general educational information, not individual tax advice.