Double-tax treaty provider
EY
Global tax advisory and professional services
Personal and corporate tax treaty analysis, double-tax relief, tax residency and cross-border tax. Advice is from the relevant EY member firm.
At a glance
- Provider type
- Global tax advisory and professional services
- Global reach
- Very high
- Primary audience
- Businesses, private clients, executives and global mobility populations
- Individual treaty analysis
- Strong
- Corporate treaty analysis
- Exceptional
- Treaty residence
- Strong
- Double-tax relief
- Strong
- Employment / income treaty issues
- Strong
- Estate / inheritance capability
- Varies by team
- Social security / totalization
- Mobility practices
- Tax authority support
- Strong
What type of treaty adviser is this?
EY publishes global tax advisory across personal and corporate treaty analysis, double-tax relief, tax residency and cross-border tax. It is a professional-services network. A global network does not mean every office handles the same treaty issue, and independence rules may affect an engagement.
A provider’s geographic network does not necessarily mean every office handles the same treaty issues.
Who it may suit
EY may be relevant to Businesses, private clients, executives and global mobility populations.
Which country pairs can the provider coordinate?
Published global reach: Very high.
Published reach is very high. Advice is from the relevant member firm. Multi-jurisdiction capability — confirm the specific treaty and countries directly.
Treaty issues for individuals
Individual treaty analysis is published as strong.
Personal and corporate tax treaty analysis, double-tax relief, tax residency and cross-border tax.
Treaty issues for businesses
Corporate treaty analysis is published as exceptional.
Treaty residence and tie-breakers
Treaty residence and tie-breaker work is published as strong.
The exact sequence and wording depends on the treaty.
Foreign tax credits and double-tax relief
Foreign tax credit and other relief work is published as strong.
WiT Access does not calculate relief or promise that foreign tax will be credited in full.
Employment and other income
Income and employment treaty issues are published as strong.
Estate and inheritance treaty issues
Estate and inheritance treaty issues are published as varying by jurisdiction and private-client team.
Social security and totalization agreements
Social security and totalization work is published as strong in mobility practices.
Social-security agreements are separate from income-tax treaties.
What if the tax authorities disagree?
Tax authority support is published as strong.
Published support is not a statement that the provider will act as your legal representative.
How treaty advice is priced
Pricing is set by the member firm. No fee is repeated on this page. Request a written scope and fee quote.
Questions to ask
These are questions for the provider. This page does not answer them.
Do you advise on the specific treaty between my two countries?
Ask EY directly. The published material reviewed for this page does not answer this for your situation.
Do you analyse domestic law as well as the treaty?
Ask EY directly. The published material reviewed for this page does not answer this for your situation.
Can you determine treaty residence?
Ask EY directly. The published material reviewed for this page does not answer this for your situation.
Can you handle tie-breaker analysis?
Ask EY directly. The published material reviewed for this page does not answer this for your situation.
Do you advise on foreign tax credits?
Ask EY directly. The published material reviewed for this page does not answer this for your situation.
Can you review employment income under the treaty?
Ask EY directly. The published material reviewed for this page does not answer this for your situation.
Can you advise on pensions?
Ask EY directly. The published material reviewed for this page does not answer this for your situation.
Can you advise on investment income?
Ask EY directly. The published material reviewed for this page does not answer this for your situation.
Do you support business treaty issues?
Ask EY directly. The published material reviewed for this page does not answer this for your situation.
Can you advise on estate / inheritance treaty issues?
Ask EY directly. The published material reviewed for this page does not answer this for your situation.
Do you handle totalization agreements?
Ask EY directly. The published material reviewed for this page does not answer this for your situation.
Can you help obtain a tax-residence certificate?
Ask EY directly. The published material reviewed for this page does not answer this for your situation.
Can you coordinate both jurisdictions?
Ask EY directly. The published material reviewed for this page does not answer this for your situation.
Can you assist if the tax authority challenges the treaty treatment?
Ask EY directly. The published material reviewed for this page does not answer this for your situation.
Which legal entity will advise me?
Ask EY directly. The published material reviewed for this page does not answer this for your situation.
What will the engagement cost?
Ask EY directly. The published material reviewed for this page does not answer this for your situation.
What documents do you need before advising?
Ask EY directly. The published material reviewed for this page does not answer this for your situation.
Sources and review
Reviewed 7 October 2026.
- Service page
https://www.ey.com/en_gl/tax
The provider’s published service description used for this page.
- Provider partnership page
https://www.ey.com/
The provider’s own public page. It does not mean WiT Access has an agreement.
- Supporting public page
https://www.ey.com/en_gl/technical/tax-guides/worldwide-personal-tax-and-immigration-guide
Further public material reviewed alongside the service page.
Information is based on publicly available provider information reviewed by WiT Access. Treaty wording, protocols, provider services and tax rules can change.
WiT Access provides general information and comparison resources. Treaty treatment depends on the relevant domestic laws, treaty wording, protocols, type of income and individual circumstances. Nothing on this page constitutes tax, legal, financial or investment advice.
WiT Access does not determine treaty residence, entitlement to treaty benefits or the amount of double-tax relief available.
A treaty may change taxing rights or provide relief without removing filing or reporting obligations.