Every family-based application starts with a definition, and the definition is the part people skip. Immigration systems recognise a narrow category of relationships, and being outside it means the route does not exist — not that it is harder.
| Almost always included | spouse and dependent children |
|---|---|
| Sometimes included | registered partner, unmarried partner |
| Rarely included | parents, siblings, adult children |
| Decides everything | which side of the definition you fall on |
The core category
Spouses. Recognised nearly everywhere, subject to the marriage being legally valid and recognised at the destination. Two situations require care: marriages celebrated in a third country, and marriages not recognised by the destination's law.
Dependent children. Usually under a specified age, unmarried, and dependent. The age limit is a hard line rather than a guideline, and it applies at a specific moment — which is why the question of when the age is assessed, at application or at decision, matters enormously for a child close to the limit.
A delay in filing can put a child outside the category permanently. Where a child is approaching the age, that is a reason to file early rather than to wait for a more convenient moment.
Partners who are not spouses
The area of greatest variation between countries.
- Some recognise registered partnerships equivalently to marriage
- Some recognise unmarried partners after a period of cohabitation, typically two years
- Some recognise only marriage
- Recognition of same-sex relationships varies, including for couples married elsewhere
Where cohabitation is the basis, the practical issue is evidential rather than legal. The relationship must be documented across the qualifying period, and couples rarely think to build that record while living it — joint tenancy, joint accounts, correspondence at a shared address, insurance naming both.
A couple who lived together for years with everything in one name faces a real difficulty, and it is entirely avoidable by putting some things in both.
Relatives outside the core
Parents, siblings, adult children and extended relatives. Routes exist in some systems, and where they do they are usually conditional on:
- Genuine dependency, demonstrated rather than asserted
- Absence of alternative care in the home country
- The sponsor's ability to support them fully
- Sometimes medical or care needs that cannot be met at home
These routes are typically narrow and heavily evidenced. It is worth being honest about that: bringing elderly parents is one of the most difficult things to achieve in most immigration systems, and families who assume it will be possible later frequently find it is not.
Where it matters, it should be researched before the move rather than after — because it may change where the move should be to.
The sponsor's side
Family routes assess the sponsor as much as the applicant:
- Status — many systems require the sponsor to hold a settled or long-term status, not a temporary one
- Income, often at a defined threshold, and often demonstrated over a period rather than at a moment
- Accommodation adequate for the household size
- Absence of recourse to public funds
- A maintenance undertaking, which is a real financial commitment
The income requirement is where most refusals originate, and the reason is usually the demonstration rather than the amount. Where income must be shown over six or twelve months, a recent job change or a period of self-employment can fail the test despite comfortable earnings.
This is a timing problem with a timing solution: establish what period must be evidenced, and apply after it has passed rather than during it.
What the family member receives
Worth establishing before applying, because it shapes the family's actual life:
- Whether the permit allows work, and without restriction
- Whether it allows study, and at what fee status
- Whether there is access to healthcare
- Whether time held counts toward permanent residence
- What happens if the relationship ends
The last is the question nobody wants to ask and everybody should. Where status derives entirely from a relationship, the end of the relationship can end the status, and the dependent partner's position is far weaker than they usually realise.
Most systems have some provision for this — for bereavement, for domestic abuse, for long relationships — but the provisions are specific and must be relied on deliberately. Knowing they exist before they are needed is the point.
Frequently asked questions
Why does a child's age matter so precisely?
Because the age limit is a hard line assessed at a specific moment, so a filing delay can put a child outside the category permanently.
What makes unmarried partner routes difficult?
Evidence. The relationship must be documented across the qualifying period, and couples rarely build that record while living it.
Why do income requirements cause refusals?
Usually the demonstration rather than the amount — where income must be shown over months, a recent job change can fail the test despite good earnings.
What happens if the relationship ends?
Status derived from a relationship can end with it. Most systems have specific provisions for particular circumstances, but they must be known and relied on deliberately.
