Tax intelligence for
employment across borders.
AI-native direct tax handling for everywhere your employees are.
Stay compliant with salary, equity, payroll registration, permanent establishment risk, and relocation.
Who we serve
Cross-border tax compliance, for your company and employees.
Foreign income and equity, sorted.
Cross-border tax advice, reporting, and filing for Americans abroad — covering foreign income and equity events. RSUs, NSOs, ISOs, early exercise, secondary sale, and liquidity.
- Advisory memos for equity events — early exercise, secondary sale, exit
- RSU, NSO, and ISO planning across jurisdictions
- US filing + foreign income reporting (FEIE, FTC, FBAR)
Employer and employee tax advice, sorted.
Equity comp compliance, Permanent Establishment risk assessment, and employer tax obligations — plus tax filing and advisory for your international employees.
- Equity comp compliance across jurisdictions
- Permanent Establishment risk & employer registration
- Tax filing and advisory for your international employees
Global Coverage
Cross-border tax intelligence across 30+ jurisdictions.
Treaty analysis and local tax authority integration across every cross-border lane your people work in — Americas, Europe, Asia-Pacific, and beyond.
IRS · Federal & state income tax
Federal and state filing, FBAR/FATCA reporting, and outbound expat treatment for citizens and resident aliens.
CRA · Income Tax Act
Canada/US treaty coordination, departure tax planning, and cross-border RRSP/TFSA treatment.
HMRC · PAYE · National Insurance
UK income tax and NIC, statutory residence test, equity compensation, and treaty coordination.
Revenue · PAYE · USC
Irish residence and domicile rules, PRSI coordination, and equity compensation treatment.
Finanzamt · Einkommensteuer
German income tax, social security totalization, and progressive tax coordination.
DGFiP · Impôt sur le revenu
French income tax, social charges coordination, and wealth tax (IFI) considerations.
Belastingdienst · 30% Ruling · Box 1/2/3
Dutch income tax, 30% expat ruling, and substantial interest rules.
SPF Finances · IPP
Belgian income tax, special expat regime, and social security coordination.
ESTV · Cantonal tax
Federal and cantonal tax variation, pillar system, and at-source withholding.
BMF · Einkommensteuer
Austrian income tax, progressive bracket coordination, and social security totalization.
Agencia Tributaria · IRPF · Modelo 720
Spanish IRPF, Beckham Law regime, and overseas asset reporting (Modelo 720).
Agenzia delle Entrate · IRPEF
Italian IRPEF, impatriate regime, and social security coordination.
AT · IRS · NHR regime
Portuguese IRS, Non-Habitual Resident regime, and treaty coordination.
AADE · Φόρος εισοδήματος
Greek income tax, non-dom regime, and investment income treatment.
Skatteverket · Inkomstskatt
Swedish income tax, expert tax relief, and social security totalization.
Skattestyrelsen · Forskerskat
Danish income tax, researcher tax scheme, and social security coordination.
Skatteetaten · Skattemelding
Norwegian income tax, petroleum tax considerations, and wealth tax coordination.
Vero · Tuloverotus
Finnish income tax, key employee tax relief, and social security coordination.
KAS · PIT
Polish PIT, IP Box regime for tech contractors, and B2B structuring.
ITA · Mas Hachnasa
Israeli income tax, new immigrant benefits, and social security coordination.
FTA · Corporate Tax
Zero personal income tax, UAE corporate tax registration, and home-country tie-breaking.
IRAS · Income Tax
Territorial tax system, foreign-sourced income exemption, and EP/EntrePass holder structuring.
IRD · Salaries Tax
Territorial source principle, sixty-day rule, and inbound assignment structuring.
NTA · Shotokuzei
Permanent vs non-permanent resident classification, equity comp timing, and treaty coordination.
Income Tax Department · ITR
Resident but not ordinarily resident (RNOR) status, RSU taxation, and treaty benefits.
ATO · PAYG
Resident vs non-resident determination, superannuation portability, and DASP planning.
Need a jurisdiction not listed? We cover everywhere. Ask us about your corridor.
How we work
AI-powered. Professionally reviewed.
AI-powered preparation
Income analysis, treaty optimization, and form generation — powered by IRS publications, tax treaties, and revenue rulings.
Licensed professional review
Every filing and memo is reviewed by a licensed tax professional. Nothing goes to the IRS without a human sign-off.
Cross-border expertise
Grounded in primary sources — tax treaties, IRS notices, revenue rulings, and tax court decisions. Every recommendation is traceable.
For Companies
Five ways your people trigger tax.
Everything we do is driven by where your employees are. Equity, payroll registration, Permanent Establishment, relocation, and employee tax support — handled on the same platform your employees use to file and get advice.
Equity Compensation
Why tax is owed: every RSU vest, NSO/ISO exercise, and ESPP purchase is a taxable event in the country where the employee works. We handle cross-border sourcing, employer reporting (HMRC share schemes, Dutch Box 1), withholding, and AMT modeling.
Payroll Registration
Why tax is owed: employing someone in a country registers you as an employer there, with ongoing withholding and filing obligations. We handle local registration, social security coordination, totalization elections, and annual employer returns.
Permanent Establishment Risk
Why tax is owed: your employees' work abroad can make your company taxable on profits in their country — even without a subsidiary. We assess exposure by country using OECD safe harbor rules, monitor thresholds, and advise on structuring.
Relocation Compliance
Why tax is owed: when an employee moves, their residency, your withholding, and both sides' filing obligations all change. We handle split-year filing, treaty tie-breakers, state departure, and new-country employer setup.
Employee Tax Support
Why tax is owed: your international employees owe US income tax on what you pay them — navigating FEIE, FTC, treaty elections, and FBAR is on them. We file their return, write advisory memos, and handle equity planning — offered as a benefit.
For Individuals
Tax compliance for expats abroad.
AI-powered cross-border preparation. Reviewed by licensed tax professionals.
Tax Filing
Cross-border tax return preparation with FEIE/FTC optimization, equity comp reporting, and IRS-ready filing packages.
Advisory Memos
Jurisdiction-specific tax advisory with authoritative citations. Covers treaty provisions, equity compensation, pensions, FBAR/FATCA, and relocation planning.
Compliance Filing
Extension filing, FBAR submissions, FATCA reporting, and treaty disclosure forms. Deadlines tracked and obligations flagged proactively.
Ready to get started?
Whether you're filing your own return or managing tax obligations for a global workforce — start with a conversation.