Calendar-based day counting
Connect your calendar so Thetis can sync flights and reconcile each entry and exit against the days you spend in a jurisdiction.
Thetis
Thetis is tax residence tracking software for cross-border individuals. It syncs calendar travel data, tracks day-count thresholds across jurisdictions, and routes filings through named professionals in the relevant country.
Tax residence tracking for cross-border individuals
Thetis is a tax residence tracking product for people who move across borders and need a clearer view of where they owe tax. It combines calendar-based day counting with residency threshold tracking so users can see their status across the jurisdictions they travel in.
The workflow shown on the site runs from flight data to filed returns. After connecting a calendar, Thetis reconciles entries and exits, tracks day counts per jurisdiction, and routes filings through chartered accountants and named professionals in the relevant country. The product is positioned for borderless individuals who want residency planning and filing support in one service.
What Thetis does
Live residency tracking
Monitor residency thresholds and status across jurisdictions, with live indicators such as Safe, Approaching, and Over.
Threshold forecasting
See forecasts for how many days remain before a threshold is reached or exceeded, based on current travel patterns.
Optimisation surfacing
Use the product’s status view to spot possible optimisations before a filing decision is made.
Expert filing support
Have filings handled by chartered accountants and named professionals in the relevant country, including federal, state, and treaty-based returns where applicable.
Advisor access
Work through a membership model that includes a quarterly call with the advisor responsible for your file.
Common ways people use Thetis
Track residency while traveling
For people who move between countries during the year and need a running tally of days by jurisdiction, Thetis keeps a live count and flags threshold risk before residency rules become a problem.
Monitor threshold risk
For users who want to understand whether a current travel pattern is likely to leave them safe, approaching, or over a day-count limit, Thetis provides threshold status and forecast views.
File in the country where tax is owed
For people who need returns prepared and signed in the relevant country, the service pairs software tracking with chartered accountants and named professionals for filing support.
Consolidate multi-jurisdiction tracking
For users comparing how their schedule affects multiple jurisdictions at once, Thetis presents one dashboard for all tracked borders rather than separate, manual spreadsheets.
Prepare for advisor-led planning
For residents or non-doms dealing with complex country-specific rules, the site positions Thetis as a way to get residency legibility before taking advice or filing.
Pros and Cons
Pros
- Tracks day counts and residency thresholds across jurisdictions in one workflow.
- Uses calendar integration to reconcile flights and travel days.
- Shows live residency status with clear state labels.
- Combines software tracking with professional filing by named experts.
- Includes access to the advisor responsible for the file through a quarterly call.
Cons
- The detailed list of supported jurisdictions is not provided in the captured text.
- The pricing page was not available in the source, so plan structure and cost are unclear.
- The site indicates membership is limited to a small number of new members each quarter, which may limit immediate access.
FAQ
How does onboarding work?
The homepage says Thetis begins with a fifteen-minute introductory call to understand your file, and that membership is limited to a small number of new members each quarter.
What data does Thetis use?
The homepage indicates that Thetis connects to your calendar so it can reconcile flights and day counts, then tracks residency status across jurisdictions. It does not describe any other data sources in the fetched text.
Who handles the filing work?
The site says every filed return is signed by a named professional in the relevant country, and that membership includes a quarterly call with the advisor responsible for your file.
Which jurisdictions are supported?
The homepage lists supported filing partners in the United Kingdom, United States, United Arab Emirates, and across Europe, but the detailed jurisdiction list is not provided in the fetched text.
Is pricing available on the site?
The pricing page returned a 404 in the captured source, so no pricing, plan, or trial details were available to extract.
Quick Facts
- Category
- Tax residence tracking
- Primary users
- Cross-border individuals and other borderless travelers
- Core workflow
- Calendar sync → day-count tracking → residency status → filing support
- Filing model
- Named professionals in the relevant country sign filed returns
- Pricing
- Not available in the captured source
- Domain
- thetistax.com
Thetis Alternativen
EasyStubMaker
EasyStubMaker generates paystubs, invoices, W-2s, 1099-NECs, and Profit & Loss statements online. It is aimed at freelancers, small businesses, landlords, and contractors who need an instantly downloadable, formatted PDF with tax calculations.
Deel
Deel ist eine All-in-One-Plattform für globale Personalverwaltung, die die Einstellung, die Gehaltsabrechnung und die Compliance für Teams in über 150 Ländern vereinfacht.
Keeper
Keeper is a tax filing platform that combines AI tools and review from tax professionals to help freelancers, self-employed workers, and other users with complex returns prepare and file taxes. It also offers calculators, deduction tracking, and research resources for estimating tax bills and finding savings opportunities.
NAADI
NAADI is a corporation tax intelligence tool for UK accounting practices. It processes bookkeeping data to estimate CT positions, surface reliefs and risks, and give clients a plain-English view of their tax position.
Keeper
Keeper is a tax filing platform that combines AI assistance with review from tax professionals for W-2, freelance, business, rental, and other complex tax situations. It helps users find deductions, prepare returns, and file with expert review.
Gerald
Gerald is Blink Claw’s AI CFO template for founders and teams that want finance work handled through chat and connected tools. It builds board-ready outputs, reconciles books, supports tax prep, and can manage Alpaca workflows after quick deployment.