FlagSageTie-breaker rule
Glossary term
A tie-breaker rule is a tax treaty rule that decides which of two countries counts as the residence country for that treaty when both countries treat a person or company as resident.
For individuals, many treaties apply tests in a fixed order. HMRC guidance lists permanent home, then centre of vital interests, then habitual abode, then nationality. If none of these settles it, the tax authorities of the two countries decide by mutual agreement. Once one test gives an answer, the later tests are not needed.
For companies, treaties use different tie-breakers. HMRC says the UK uses the place of effective management as a tie-breaker in many treaties. Other treaties leave the question to agreement between the two tax authorities.
The result applies for the purposes of that treaty. It decides which country has priority to tax under the treaty, and each country's domestic rules and filing duties still need checking. Wording and order vary, so read the specific treaty.
Not to be confused with
- Tax treaty. The tax treaty is the whole agreement, and the tie-breaker is one rule inside its residence article.
- Tax residence. Tax residence under domestic law comes first, and the tie-breaker only applies when two countries both claim a person as resident.
Sources
- INTM154020 - Double taxation agreements: residence: Dual residentsOfficial guidance
- Dual residents 2026 (HS302)Official guidance
- INTM120085 - Company residence: standard treaty tie-breakersOfficial guidance
Related
- Countries covered
- General
- Sources
- 3 sources
- Tax year
- Current rules as checked
- Review
- Not professionally reviewed
Sources checked November 8, 2026