AI-powered tax service for global companies and the people they employ. Maintain direct tax compliance with equity compensation, permanent establishment risk, and relocation — plus end-to-end tax filing for individuals and employees abroad.
Equity Compensation
Sync CartaTracks vesting, exercise, and sale events across jurisdictions, flags trailing-liability and social-tax issues before payroll runs.
Vesting next 30 days
$2.4M
across 11 employees · 6 jurisdictions
Withholding exposure
$316K
$184K requires Spanish social security
1042-S filings due
8
Q2 deadline: April 30
Upcoming equity events
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.
Equity comp compliance, Permanent Establishment risk assessment, and employer tax obligations — plus tax filing and advisory for your international employees.
Deep treaty analysis and local tax authority integration across every cross-border corridor your people work in — Americas, Europe, and Asia-Pacific.
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.
SAT · ISR
Mexican income tax, residency-based taxation, and US/Mexico treaty coordination.
Receita Federal · IRPF
Brazilian income tax, worldwide income reporting, and Capital Gains coordination.
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.
FSČR · Daň z příjmů
Czech income tax, social/health insurance coordination, and EU/treaty rules.
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.
IRD · Income Tax
NZ residency tests, transitional resident relief, and US/NZ treaty coordination.
NTS · Income Tax Act
Korean income tax, foreign tax-free allowance for inbound expats, and US/Korea treaty.
MOF · Income Tax Act
Taiwan-source vs worldwide income, AMT considerations, and inbound assignee structuring.
RD · PIT
Thai income tax, remittance basis for foreign-sourced income, and Long-Term Resident regime.
Need a jurisdiction not listed? We cover everywhere. Ask us about your corridor.
Jurisdiction-specific memos with cited authority. Equity events, relocations, and treaty positions for individuals; Permanent Establishment risk and employer obligations for companies. Reviewed by licensed advisors.
Cross-border preparation and filing — individual returns, employer filings, and treaty-optimized positions across 30+ jurisdictions. Reviewed before submission.
Foreign-account disclosures, treaty positions, employer registration, and Permanent Establishment monitoring. Deadlines tracked across IRS, HMRC, OECD, and local tax authorities.
Whether you're filing your own return or managing tax obligations for a global workforce — start with a conversation.