In most countries restricted stock units are taxed as employment income when they vest, on the market value of the shares on the vesting date — not when they were granted and not necessarily when you sell. In high-tax countries that vesting income can be taxed above 40% including social contributions. Any further gain between the vest-date value and the price you later sell at is a separate capital gain. Because the tax point is vesting, where you are tax resident as the vesting income is sourced is what determines the rate.

Moving Abroad Before Your RSUs Vest: The Bulgaria Timing Play (2026)

Q: Can I avoid tax on my RSUs by moving abroad before they vest?

Not entirely, and anyone who tells you otherwise is guessing. The vesting income is allocated across the countries where you worked between grant and vest — the vesting-period sourcing rule that follows the OECD Model Convention. So the portion attributable to work you did while resident in your old country generally stays taxable there even after you leave. What moving does change is the forward portion: the part of the cycle you spend as a Bulgarian resident can be sourced to Bulgaria and taxed at 10%. The earlier in the vesting cycle you move, the larger that low-taxed share.

Q: Does this work for US citizens?

Only partly. The United States taxes its citizens on worldwide income regardless of where they live, so a US citizen cannot fully source RSU income away from the US by moving. Bulgaria can still help with the non-US layer, state-tax exposure and the later capital gain, and can be part of a well-designed structure — but the plan must be built around US rules, which is a separate and specialist question. For non-US nationals leaving a high-tax country, the play is far cleaner.

Your RSUs are a tax event waiting for a date — and in a high-tax country that date can cost you 40% or more. Restricted stock units are not taxed when granted; they are taxed as employment income the day they vest, on the full market value of the shares. For a senior engineer or manager sitting on a multi-year equity package in Germany, the Netherlands, the UK or Scandinavia, each vesting cliff hands a large slice to the tax office. It is tempting to think the fix is simple — move abroad the week before a big vest. It is not. The rule that actually governs this is vesting-period sourcing, and understood properly it turns relocation into a genuine, defensible timing play rather than a myth. This guide explains how RSUs and options are really taxed when you move, why the vesting calendar matters more than any single vest date, and how becoming Bulgarian tax resident early enough shifts the forward portion of your equity to a 10% flat rate.

Sitting on unvested RSUs and thinking about leaving? The costly misconception is that moving just before a vest wipes the tax. It does not — the income is split across the countries you worked in between grant and vest. The saving comes from moving early in the cycle, and that decision has to be made against your vesting calendar, now, not at the next cliff.

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Vest

The taxable moment — income on the shares' full value

40%+

Common vesting-income rate in high-tax countries

Grant→Vest

The period the tax is sourced across, not one date

10%

Bulgarian flat rate on the portion you shift

Written by Yordan Cholakov — Partner & Co-Founder, Innovires Legal, registered with the Bulgarian Bar Association. Reviewed by Desislava Dimitrova — Partner & Co-Founder.
Innovires structures relocations into Bulgaria for tech professionals and founders — residency, equity-timing analysis, treaty sourcing and first-year compliance.

How RSUs Are Actually Taxed

Start with the mechanics, because most of the confusion lives here. A restricted stock unit is a promise of shares that convert to you on a schedule. There are two distinct tax events:

At vesting — employment income. When a tranche vests, the market value of those shares on that day is taxed as ordinary employment income, usually with social contributions on top. This is the big one, and in high-tax countries it lands at 40% or more.
At sale — capital gain. When you later sell, only the further gain above the vest-date value is a capital gain, taxed separately under whatever regime then applies to you.

The critical insight is that the large tax hit is at vesting, not at grant and not at sale. So the question that decides your rate is: where are you tax resident, and where is that vesting income sourced, on the day it vests and over the period it was earned? That is where relocation enters — and where the myths begin.

The Rule Nobody Tells You — Vesting-Period Sourcing

Here is the honest version, and it is more powerful than the myth once you understand it. Equity compensation is treated as a reward for the work performed over the period it relates to — for RSUs, typically grant to vest. When you have worked in more than one country during that period, the vesting income is allocated across those countries pro-rata to your workdays in each, and each country taxes its own slice. This allocation follows the approach in the commentary to Article 15 of the OECD Model Convention, which underpins most double-tax treaties.

Work through what that means. Suppose a tranche has a four-year grant-to-vest period and you move to Bulgaria at the two-year mark. Broadly, the first two years are sourced to your old high-tax country and taxed there; the second two years are sourced to Bulgaria and taxed at 10%. Move at year one and three-quarters is Bulgarian-sourced. Move the week before vest and almost the entire tranche stays with the old country — which is exactly why the "move just before the vest" trick fails.

The myth vs the mechanism: Moving abroad does not erase the tax on the part of the vesting period you already worked at home — that portion stays sourced there even after you leave. What moving does is put the forward portion of every not-yet-vested tranche into Bulgaria's 10% rate. The prize is real; it is just won by moving early, not late.

Want to see how your specific grants would split? Send us your vesting calendar — we map the sourcing split and the Bulgaria saving, free, in writing.

The Bulgaria Timing Play

Bulgaria is the destination that makes the sourced-forward portion worth capturing, because both halves of the equity story are favourable:

Vesting income at 10% flat. Once you are Bulgarian tax resident under Article 4 of the Personal Income Tax Act (ЗДДФЛ), the vesting income sourced to Bulgaria is employment income taxed at the flat 10% — against 40%+ in much of Western Europe, that is the entire point.
Favourable treatment of the later gain. When you sell, gains on shares admitted to trading on an EU/EEA regulated market can be exempt under Article 13 ЗДДФЛ, and other share gains are taxed at 10%. The appreciation after vesting is not punished.
No wealth tax, and euro-and-Schengen certainty. Bulgaria adopted the euro on 1 January 2026 and has been in Schengen since 1 January 2025 — a stable, low base, not an exotic one.

The play, then, is not a trick performed at a vest date; it is a relocation performed early enough in your vesting calendar that a meaningful share of your remaining tranches is Bulgarian-sourced. For founders whose equity is in their own company rather than an employer's, the related moves are in our guides on relocating before selling a company and building a post-exit wealth base in Bulgaria; if you are also holding crypto, see crypto taxation in Bulgaria.

Have a big vest coming in the next year or two? We return a written timing and residency plan in 48 hours.

The Three Traps in an Equity Relocation

Trap 1 — Moving the week before a vest

The most common and most disappointing mistake. Because the income is sourced over the whole grant-to-vest period, a last-minute move captures almost nothing — the tranche is already earned in the old country. The saving belongs to the tranches whose vesting period you spend abroad, which means acting early, not at the cliff.

Trap 2 — Forgetting the exit tax on unvested equity

Some countries apply a deemed-disposal or exit charge to certain unvested or unexercised equity when you cease residence, precisely to catch value leaving untaxed. Whether it bites, and on what, is country-specific. It has to be checked before you move, because it can change the optimal timing entirely — the exit-tax question is the first one, not an afterthought. Our EU exit tax guide covers how these charges work.

Trap 3 — Leaving on paper, not in fact

Sourcing income to Bulgaria only holds if you are genuinely Bulgarian resident and can show it. Keep your home, family or workdays in the old country and the sourcing argument collapses — the days still point there. Where you actually work during the vesting period is evidence, so a real move, documented, is part of the plan, not a formality.

Vesting at Home vs Vesting as a Bulgarian Resident

The forward portion of a vesting tranche — high-tax country vs Bulgaria, as of July 2026
Factor	Stay in high-tax country	Bulgarian resident (forward portion)
Vesting income rate	Often 40%+ incl. social	10% flat
Gain after vesting	Capital gains at local rate	EU/EEA-market shares can be exempt; else 10%
What the move captures	Nothing — earned locally	The share of each tranche vesting after you move
Best timing	—	Early in the grant-to-vest cycle
Wealth tax	Country-dependent	None in Bulgaria
Certainty	Rules can change	EU, euro (2026), Schengen (2025), treaty sourcing

The table is about the forward portion deliberately — that is the honest scope of what relocation controls. Nobody can retro-source the years you already worked at home. What you can do is stop feeding future tranches into a 40% rate.

Options and ESPP — Same Strategy, Different Dates

RSUs are the clearest case, but the logic generalises. Stock options are usually taxed on the spread between the exercise price and market value at exercise — so the taxable event is exercise rather than vest, and you have some control over its timing. Employee share purchase plans (ESPP) have their own purchase-and-discount timing. In every case there is a defined taxable moment and an underlying earning period that can be sourced across countries. The planning question never changes: where are you tax resident when the taxable event happens, and how much of the earning period did you spend where. The instrument sets the date; the strategy is the same.

Doing It Properly — Substance and Evidence

An equity relocation is won or lost on evidence, because sourcing is a factual claim. Three things matter most:

A genuine move. Your home, your family and — critically for equity — your actual workdays need to be in Bulgaria. Establishing your centre of vital interests here is what makes both your residency and your sourcing defensible.
A clean break from the old country. Cease residence on a facts basis and, where required, register the departure — so the old country is not still claiming you as resident on top of its sourced slice.
Documented workday location. Because tranches are split by workdays, keep evidence of where you were during the vesting period. Our 183-day residency guide covers holding Bulgarian residence while still travelling.

Common questions before booking:

Is this aggressive planning? No — it is simply applying the standard treaty sourcing rule correctly and moving for real. The aggressive version is pretending you moved when you did not; sourcing is evidence-based and that fails fast.

How early do I need to move? As early in the vesting cycle as you can. There is no single answer — it depends on your grant dates and how much vests when. That mapping is the first thing we do.

Do I have to sell my shares? No. The vesting income is taxed whether you hold or sell; selling only triggers the separate gain. Holding after a Bulgarian-resident vest can be attractive given the EU/EEA-market exemption on later gains.

What does Bulgaria cost to set up? Personal residency is straightforward; if you also run consulting or a company alongside employment, a freelancer or EOOD structure is added. We scope the whole picture, not just the RSUs.

When This Is Not for You

An honest strategy has to decline where it does not fit. It does not fit when:

Your equity has already vested. The tax point has passed; moving now helps future income and gains, not the vest that already happened.
You are a US citizen. The US taxes you on worldwide income regardless of residence, so RSU income cannot be fully sourced away by moving. Bulgaria can help the non-US layer, but the plan must be built around US rules — see our moving to Bulgaria from the US guide.
Your package is small or fully liquid soon. If the numbers are modest, the cost and disruption of a genuine relocation may outweigh the saving.
You cannot actually relocate. If work or family keeps you in the old country during the vesting period, the workdays point there and the sourcing does not move. A half-move does not work here.

Know in 48 Hours What Your Vests Would Cost — at Home vs in Bulgaria

Send us your grants — grant dates, vesting schedule, roughly how much vests when, your current country and whether you are a US citizen. We return a written read: how each tranche would source between your country and Bulgaria, the exit-tax question for your jurisdiction, and — if it fits — the realistic move timing and residency plan with numbers. Best fit: tech professionals and managers holding multi-year RSU or option packages in a high-tax country who can genuinely relocate. Free, written, no obligation — no call needed unless you want one.

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Free · 48-hour written response · Bulgarian Bar Association credentialed · Prefer email? office@innovires.com

Frequently Asked Questions

When are RSUs taxed? +

In most countries RSUs are taxed as employment income when they vest, on the market value of the shares on the vesting date — not at grant and not necessarily at sale. In high-tax countries that vesting income can exceed 40% including social contributions. Any further gain between the vest-date value and your later sale price is a separate capital gain. Because the tax point is vesting, where the vesting income is sourced is what determines the rate.

Can I avoid tax on my RSUs by moving abroad before they vest? +

Not entirely. The vesting income is allocated across the countries where you worked between grant and vest — the vesting-period sourcing rule that follows the OECD Model Convention. The portion attributable to work done while resident in your old country generally stays taxable there even after you leave. What moving changes is the forward portion: the part of the cycle spent as a Bulgarian resident can be sourced to Bulgaria at 10%. The earlier you move, the larger that low-taxed share.

How does the vesting-period sourcing rule work? +

Equity compensation is treated as reward for the work done over the period it relates to — usually grant to vest. When you have worked in more than one country during that period, the income is split pro-rata to your workdays in each, and each country taxes its slice. Move halfway through a four-year schedule and, broadly, the first half is sourced to your old country and the second half to your new one. This is why the timing of the move against the vesting calendar matters more than the single vest date.

How are RSUs taxed in Bulgaria? +

For a Bulgarian tax resident, the vesting income sourced to Bulgaria is employment income taxed at the 10% flat rate under the Personal Income Tax Act — far below the 40%+ common in Western Europe. Separately, when you sell, gains on shares admitted to trading on an EU/EEA regulated market can be exempt under Article 13, and other share gains are taxed at 10%. A low rate on the vesting income you can shift, plus favourable treatment of the later gain, is what makes Bulgaria the destination for this play.

What about stock options and ESPP, not just RSUs? +

The same logic applies with different mechanics. Stock options are usually taxed on the spread between exercise price and market value at exercise (the taxable event is exercise rather than vest), and share purchase plans have their own timing. In each case there is a defined taxable moment and an earning period that can be sourced across countries. The question is identical: where are you tax resident when the taxable event happens, and how much of the earning period did you spend where. The instrument changes the date, not the strategy.

Does moving trigger an exit tax on my unvested equity? +

It can, in some countries. A number of jurisdictions apply a deemed-disposal or exit charge to certain unvested or unexercised equity when you cease residence, to stop value leaving untaxed. Whether it applies, and to what, depends on your country and your instruments. This is exactly why the move must be planned with the specific rules in view — the exit-tax question is checked first, not discovered later.

Does this work for US citizens? +

Only partly. The US taxes its citizens on worldwide income regardless of where they live, so a US citizen cannot fully source RSU income away by moving. Bulgaria can still help with the non-US layer, state-tax exposure and the later capital gain, and can be part of a well-designed structure — but the plan must be built around US rules, which is a separate and specialist question. For non-US nationals leaving a high-tax country, the play is far cleaner.

When should I plan the move? +

As early in the vesting cycle as possible — ideally before a new grant, and certainly before the bulk of a vesting period has been worked in your high-tax country. Because the income is sourced over the whole grant-to-vest period, every month resident in the old country before moving is a month of that tranche locked to the high rate. Moving the day before a vest achieves very little; moving years before the vests you care about achieves most of the saving. The planning window is now, against your actual vesting calendar.

Disclaimer: This article provides general information on the taxation of equity compensation on relocation as of July 2026. The sourcing of RSU and option income, exit-tax rules and treaty treatment are fact-specific and vary by country and by plan; figures are indicative. Nothing here constitutes individual legal or tax advice, and the position in your departure country must be confirmed with local counsel. Last reviewed: July 11, 2026.

Legal notice: This article is for informational purposes only and does not constitute individual legal advice. For your specific situation, please consult a qualified lawyer. The legal framework may change after the publication date.