Double tax relief allocator
See which country taxes an item of income first and where the credit is claimed.
Open calculator39 calculators for the work this desk actually does: deciding which country taxes an item first, testing withholding against a treaty cap, building an arm's length range, and running the United States, Canadian and Emirati mechanics that catch people who have moved. Every one computes from your own figures, in the browser, with nothing sent anywhere.
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Foreign tax credit limit calculator
Work out how much foreign tax is creditable this year and how much carries forward.
Open calculatorTreaty tie-breaker walkthrough
Work down the tie-breaker ladder and see which rung decides your residence.
Open calculatorSplit-year income allocator
Split the year you moved into resident and non-resident parts and allocate the income.
Open calculatorProfit to shareholder tax chain
Follow corporate profit through every tax layer to the cash that reaches you.
Open calculatorNRI TDS versus treaty rate
Compare Indian withholding at the domestic rate against the treaty cap.
Open calculatorForm 13 lower TDS benefit estimator
Compare withholding on the gross sale price against tax on the actual gain.
Open calculatorForm 15CA and 15CB requirement checker
Find which part of Form 15CA applies and whether Form 15CB is needed.
Open calculatorRNOR window planner
Test your Indian residential status and see when the RNOR window closes.
Open calculatorNRE, NRO and FCNR interest taxability
Check whether interest on an Indian non-resident account is exempt or taxable.
Open calculatorIndia repatriation limit planner
Check headroom under the annual remittance limit and the forms the bank needs.
Open calculatorArm's length range builder
Turn a set of comparable margins into quartiles, a range and a verdict.
Open calculatorTransfer pricing adjustment exposure
Turn a margin gap into a primary adjustment, tax, penalty and interest.
Open calculatorIntercompany loan rate builder
Build an intercompany interest rate from its components and test the actual rate.
Open calculatorManagement fee allocation modeller
Split a cost pool by headcount, revenue and assets and compare the keys.
Open calculatorCost plus versus TNMM comparator
Run a cost mark-up and a net margin target on the same numbers.
Open calculatorMaster file, local file and CbCR checker
See which of the three transfer pricing documentation tiers you are inside.
Open calculatorRoyalty rate benchmarking helper
Test a royalty rate against observed agreements and against licensee profit.
Open calculatorGuarantee fee estimator
Price an intragroup guarantee from the interest saving it produces.
Open calculatorFIRPTA withholding calculator
Work out FIRPTA withholding and compare it with the tax on the real gain.
Open calculatorPFIC exposure calculator
See what the default PFIC rules cost on a non-US fund held for years.
Open calculatorGILTI and Subpart F inclusion estimator
Estimate a controlled foreign corporation inclusion and the residual US tax.
Open calculatorForm 8938 versus FBAR threshold checker
Test your foreign assets against both US reporting thresholds at once.
Open calculatorNet investment income tax calculator
Work out the 3.8 per cent surtax on investment income.
Open calculatorCovered expatriate test calculator
Run the three covered expatriate tests and estimate the exit charge.
Open calculatorStreamlined eligibility questionnaire
Check which streamlined track fits and what the penalty would be.
Open calculatorSection 116 holdback calculator
Work out the section 116 holdback and what a clearance certificate frees.
Open calculatorSection 217 election benefit
Compare flat withholding on Canadian benefits against filing a return.
Open calculatorT1134 filing requirement checker
Check whether a foreign affiliate return and supplement are required.
Open calculatorFAPI inclusion estimator
Estimate the Canadian inclusion from a foreign affiliate passive income.
Open calculatorNon-resident RRSP and RRIF withdrawal
Compare flat and treaty withholding on a registered plan withdrawal.
Open calculatorT1135 simplified versus detailed chooser
See whether no filing, the simplified or the detailed method applies.
Open calculatorUAE move: do I still file at home?
See which home country filing obligations survive a move to the Emirates.
Open calculatorUAE corporate tax applicability
Work out Emirati corporate tax and whether small business relief applies.
Open calculatorUAE free zone qualifying income
Test the de minimis limit and the other free zone conditions.
Open calculatorUAE economic substance checker
Check whether the economic substance regime reaches your financial year.
Open calculatorCorporate Tax Calculator
Estimate the federal and provincial tax your Canadian corporation owes.
Open calculatorPersonal Income Tax Calculator
Estimate your federal and provincial income tax and take-home pay.
Open calculatorSalary vs Dividend Calculator
Compare paying yourself salary or dividends from your corporation.
Open calculatorNothing matches that. Try a shorter word, or clear the filter and use a chip instead.
Which one do you need?
Start from the question rather than the country. If two countries are both taxing the same income, the double tax relief allocator names the one with the first taxing right and the foreign tax credit limit calculator shows how much of the other one's tax you actually get back. If both countries say you live there, the tie-breaker walkthrough works down the ladder in order and prints the record.
If you are selling property across a border, the withholding is almost always on the price rather than the profit — see the section 116 holdback calculator for Canada, the FIRPTA calculator for the United States and the Form 13 estimator for India. All three exist to show the gap and what the certificate is worth.
For a group rather than a person, the transfer pricing set is where the arithmetic is: the arm's length range builder for quartiles, the adjustment exposure model for what a margin gap costs across the open years, and the loan rate builder for pricing intercompany debt from its components.
And if you have moved to the Emirates, start with the honest version of the question: there is no personal income tax there, so the residency exit checker deals with what you still owe where you came from.
Every calculator states its assumptions on screen, prints the year and the source for any figure it prefills, and asks you for anything that could not be verified. When you need the number you will actually file, talk to us — the fee is agreed in writing before the work starts.
Cross-border tax case studies
Case study 1
Client pointed to the PFIC exposure calculator before an investment decision
A US person considering a foreign fund investment was directed to the practice's PFIC exposure calculator to understand the likely tax consequence before committing funds. Reviewing the estimate with our team, the client decided which fund to proceed with based on the more manageable of the two exposures shown.
Case study 2
Treaty tie-breaker walkthrough used ahead of a full residency filing engagement
A client facing a dual-residency claim used the treaty tie-breaker walkthrough tool to understand the sequence of tests before engaging us for the full filing. The tool clarified which facts would matter most, and the resulting engagement moved faster because the client already understood what evidence to gather.
Case study 3
RNOR window planner informed the timing of a client's return to India
A client planning to return to India used the RNOR window planner to see how different return dates would affect their transitional tax shelter. The client then engaged us to plan the actual asset decisions within the window the tool had helped them identify.
Case study 4
Indian Rent Collected While Resident Somewhere Else
Rent from Indian property is taxed in India and again where you live, with relief on one side only. The file gets the Indian deduction right first, then claims the credit on the home return against what was actually paid.
Read how this one runs
Case study 5
A Country-by-Country Report and Who Files It
The obligation sits with the group and the filing can fall on a surrogate where the parent's jurisdiction does not exchange. Establishing who files where comes before preparing anything.
Read how this one runs
Case study 6
A Second Opinion on a Return Already Filed
A cross-border return prepared on one side only is usually right in isolation and wrong in combination. The review checks residence, source and relief in that order, and says plainly whether an amendment is worth making.
Read how this one runs
Case study 7
Social Security Paid Twice Until a Certificate Arrived
Income tax relief does not reach a social security charge; only an agreement does, and only against a certificate from the system actually being paid into. Obtaining it is the work, and it is often retrospective.
Read how this one runs
Case study 8
The Local File That Has to Match the Accounts
A local file describes the entity's own controlled transactions and ties them to its statutory figures. Where the two do not reconcile, that is what an examiner opens with.
Read how this one runsAll case studies — every published engagement in one place.
Core International & Cross-Border Tax Services
International Tax Planning & Advisory
Strategy and compliance for income, assets and families spread across borders.
One coordinating team: filings on every side of the border are sequenced so treaty relief and foreign tax credits are claimed once — and in the right country.
U.S. & Cross-Border Tax Returns
Dual filers: U.S. citizens in Canada and Canadians with U.S. income run two parallel systems — we prepare both, in the right order, every year.
Expat & Emigration Tax
The move year is its own project: the elections and valuations filed that year decide the next decade of both countries’ returns.
Non-Resident Canadian Tax
Default withholding is 25% of gross: elective returns routinely turn over-withheld rent and pensions into refunds.
Transfer Pricing & BEPS
Documentation prepared with the return is the cheapest insurance in international tax; reconstructing it during an audit is the most expensive.
Tax Treaties & Withholding
Relief is only as good as the paperwork claiming it — we build treaty positions that survive review on both sides.
Cross-Border Estates & Trusts
Wills drafted for one country routinely misfire in the other — deemed disposition here, estate tax there, credits in between.
Global Investments & Reporting
Information returns carry the sharpest penalties — $25 a day whether or not any tax is owing. We keep them clean and on time.
Cross-Border Corporate Tax
Expansion raises the same four questions every time — entity, PE, repatriation, payroll. We answer them before the tax authorities do.
India Tax for NRIs & Returning Residents
The deduction is taken on the sale price, not the gain — which is why an NRI property sale strands cash unless the certificate is applied for before closing.
Canadian Tax with a Foreign Element
Residency is decided on facts, not on a form — and the year you arrive or leave is the one where the largest amounts turn on the smallest details.
UAE Tax for Expats & Their Home Country
A zero-tax country is only half the answer — the question that decides the bill is whether the country you came from still treats you as resident.
Industries & Client Types We Serve Worldwide
Global E-commerce & Marketplaces
Technology & SaaS
Professional Services Firms
Cross-Border Real Estate
Importers, Exporters & Manufacturers
Athletes, Artists & Entertainers
Remote Workers & Digital Nomads
Investment Funds & Holding Companies
Global E-commerce & Marketplaces
- Foreign VAT / GST / sales tax registrations
- Marketplace withholding reviews
- Inventory nexus & PE analysis
- Multi-currency books reconciled
Who We Serve:
Technology & SaaS
- Cross-border revenue sourcing & withholding
- IP structuring with real substance
- Equity for cross-border teams
- U.S. expansion: entity & PE setup
Who We Serve:
Professional Services Firms
Firms and partners working across borders meet Regulation 105 withholding, PE risk on long engagements and per-country payroll for travelling staff.
A partnership is taxed in the hands of its partners, so one engagement abroad can reach every partner's personal return. The order matters: the waiver is applied for before the invoice, the presence is tracked before it becomes an establishment, and the payroll is registered before the first day worked in the other country.
- Reg 105 / 102 waivers
- Permanent establishment risk
- Partner mobility planning
- Cross-border withholding recovery
Who We Serve:
Cross-Border Real Estate
- Section 216 rental returns
- FIRPTA withholding recovery
- Section 116 clearance
- Treaty credit optimization
Who We Serve:
Importers, Exporters & Manufacturers
- Transfer pricing documentation (s.247)
- Customs value vs transfer price
- Foreign affiliate reporting (T1134)
- Country-by-country reporting
Who We Serve:
Athletes, Artists & Entertainers
- Reg 105 & U.S. CWA agreements
- Multi-state & country calendars
- Touring income allocation
- Royalty & image-rights withholding
Who We Serve:
Remote Workers & Digital Nomads
- Residency analysis before moving
- Employer payroll exposure
- Totalization & social security
- Foreign tax credits
Who We Serve:
Investment Funds & Holding Companies
- Treaty access & PPT reviews
- FAPI & surplus computations
- Withholding-efficient routing
- Governance & substance
Who We Serve:
