Cross-border tax software for service businesses
Every cross-border deal, tax-checked before it's signed.
Tax Canary is your tax team's early warning on cross-border deals. Commercial teams get instant, expert-researched answers on withholding tax, VAT and permanent establishment risk, and your tax team is brought in when it matters, before the price is agreed.
50+ countries covered3 tax risks checked on every dealResearched by international tax professionals

The problem
You can't sit in every negotiation. So some deals get signed without tax being considered.
Your teams sell consulting, engineering, technical or software services across borders. Each deal can trigger withholding tax, irrecoverable VAT, or a taxable presence in the customer's country. The moment to handle it is before the price is agreed, not when you're short-paid or payment is delayed. And no tax team can be in every negotiation.
Margin eroded
Tax you didn't price for comes out of profit.
Payment delayed
Missing paperwork holds up invoices.
Mitigation missed
Treaty relief is lost once the deal is signed.
What one unpriced deal can cost
£1m
service contract, signed
15%
withholding tax nobody priced
£150,000
straight off the margin
Illustrative example. Rates depend on the country, the type of service and any tax treaty.
Sound familiar?
Situations where tax catches service businesses out
If one of these is you, Tax Canary was built for that moment.
For tax and finance leaders
How it works
Embed tax in the deal process, not after it.
Tax review becomes a step your commercial team completes in minutes, with consistent answers everyone can rely on.
01
Select the countries
Seller country and customer country: the starting point for every rule that follows.
02
Answer guided questions
Adaptive questions in plain language take the quickest path to the answer. No tax knowledge needed.
03
Read the traffic light
Red, amber or green, with the rate, the tax treaty position and the exact steps to take.

What you get
Three tax risks, checked before you commit.
Withholding tax
- Whether it applies to the transaction
- The rate charged
- Whether a tax treaty reduces the rate
- Exactly what to do to claim the treaty rate
VAT
- Whether VAT applies to the transaction
- Whether the reverse charge applies
- What to do to make sure it does
- Whether you need to register for VAT abroad
Permanent establishment
- Whether the activity creates a taxable presence in the customer's country
- Always a red result, so the tax team is involved immediately to plan and reduce the risk
For the tax function
Your expertise, on every deal.
01Cover every transactionYou're no longer limited by headcount. Every deal gets checked, not just the ones that reach your inbox.
02One consistent positionEveryone gets the same researched answer, whoever asks and whenever they ask.
03A tool they'll actually useGuided, plain language and available 24/7, so commercial teams check the tax instead of routing around it.
04Red results bring you inAnything high-risk or uncertain, including every permanent establishment question, is flagged red for the tax team. You decide what happens next.
Who it's built for
Built for engineering, inspection, consulting and technology groups working across borders.
ConsultingManagement servicesAdministrative servicesEngineeringTechnical servicesSoftware servicesCertificationInspectionTestingOffshore and energy servicesIP licensing
Covering 50+ countries, with more added all the time. See countries covered →
Selling goods only, or staying domestic? Then this isn't for you. Tax Canary does one job: the cross-border tax on services and intellectual property.
Who's behind it
Expert-researched. Not auto-generated.
Every rule is researched from legislation and tax treaties by qualified international tax professionals. AI speeds up the research, but nothing reaches you without human review.

Sarah Kaper
CEO & Founder
Founded Tax Canary to stop international deals being signed before anyone had checked the tax.

Chris Mitchell
Head of Tax Research
Leads the research behind every result, turning legislation and treaties into clear answers.

Gildine Cassou
Senior Tax Advisor
Researches and reviews the rules, so every answer is accurate, current and in plain English.

Christian Hull
CTO
Leads the platform, turning complex tax rules into a tool anyone can use in minutes.
Insights
Plain-English guides to cross-border tax
For advisors
Give your clients instant answers, and receive the complex work.
Offer Tax Canary to clients who sell services internationally. Routine cross-border questions are answered straight away; anything complex comes back to you.
Questions
Before you check a deal
How does escalation to the tax team work?
Anything high-risk or uncertain, including every permanent establishment question, is flagged red so the tax team reviews it before the deal goes ahead. Nominate your company's tax contact, and a commercial user can email the conclusion directly to the nominated recipient, ready for actioning or review.
Can we rely on the answers?
Every rule is researched from legislation and tax treaties and reviewed by qualified international tax professionals before it's published. Every conclusion is linked to the underlying legislation, so it can be validated independently.
Does it replace our tax advisers?
No. It handles the routine questions on every deal, so your tax team and advisers can focus on the complex ones. Red results bring them in.
How is it priced?
Your first deal check is free.
Which countries are covered?
50+ countries, with more added all the time. See the full list →
See it on your own scenario
Show your sales team the tax before they sign.
Send us one real deal and we'll show you the tax position, free: the rate, the tax treaty position and the steps to take. No commitment either way.