Hosting an Au Pair in 2026: Tax, National Insurance and What You Actually Owe
Au pairs are treated differently from nannies for tax purposes — pocket money below certain thresholds usually creates no PAYE or National Insurance obligation for the host family. Here's exactly where the line sits in 2026/27.
The Au Pair vs Nanny Distinction
This distinction is the whole basis of the tax treatment difference, so it's worth being precise about it:
| Au pair | Nanny | |
|---|---|---|
| Relationship | Lives as part of the family, cultural exchange | Employee |
| Payment | "Pocket money" — a modest, non-wage-like sum | Formal wage/salary |
| Hours | Typically limited, flexible, part of family life | Fixed, defined working hours |
| Tax treatment for host family | Usually no PAYE/NI obligation, if genuinely fits the model | Almost always requires PAYE registration as an employer |
If an arrangement drifts toward looking more like formal employment — fixed daily hours, a set wage well above typical pocket money levels, explicit employment-style control over duties — HMRC may view it as employment regardless of the "au pair" label used, which would then trigger the same PAYE and National Insurance obligations that apply to hiring a nanny.
Why Genuine Au Pair Arrangements Usually Avoid PAYE
The traditional au pair model — accommodation, food, and modest pocket money in exchange for light housework and childcare help, as part of a genuine cultural/language exchange living arrangement — sits below the threshold HMRC applies for triggering formal employer obligations, provided the pocket money paid doesn't exceed relevant limits. This reflects the long-standing recognition that au pairing is fundamentally different from paid domestic employment.
What Host Families Should Check
- Confirm the pocket money level against current guidance — both HMRC guidance and typical rates published by au pair agencies — to ensure the amount paid genuinely sits within "pocket money" territory rather than approaching a full wage.
- Keep the arrangement genuinely family-integrated — au pairs living as part of the household, with flexible, family-based hours, supports the au pair characterisation; rigid shift patterns and formal duty rosters push toward an employment characterisation instead.
- Contact HMRC's employer helpline if unsure — given the financial and legal consequences of misclassifying an employment relationship as an au pair arrangement (unpaid PAYE, National Insurance, and potential National Minimum Wage issues, since au pairs are generally exempt from minimum wage requirements specifically because they aren't employees), it's worth confirming your specific situation directly with HMRC if there's any doubt.
- Understand National Minimum Wage implications — because minimum wage law applies to workers and employees, a genuine au pair arrangement (not employment) generally falls outside minimum wage requirements; but if HMRC or an employment tribunal were to reclassify the relationship as employment, minimum wage back-pay could become a real financial exposure for the host family.
Does the Au Pair Owe UK Tax?
Separately from the host family's position, the au pair's own tax liability depends on their total UK income and residence status. If their pocket money (plus any other UK income) stays below the personal allowance (£12,570 in 2026/27), they typically have no UK Income Tax to pay. Their specific immigration and tax residence status can affect this further, particularly for au pairs on specific visa categories, so individual circumstances matter.
Visa and Immigration Considerations
Immigration rules affecting who can come to the UK as an au pair have changed substantially in recent years, particularly following the UK's departure from the EU, which affected free movement arrangements that previously allowed straightforward au pair placements from EU countries. Host families considering hosting an au pair from outside the UK should check current gov.uk immigration guidance carefully, as visa routes, eligibility, and requirements have shifted and may no longer resemble older, pre-Brexit arrangements some families may remember or have heard about anecdotally.
Practical Steps for Host Families
- Set pocket money at a level clearly consistent with published au pair guidance, not a de facto wage.
- Keep the relationship structured as genuine live-in family integration, with flexible rather than rigid working patterns.
- Document the arrangement clearly (a simple written agreement covering pocket money, accommodation, expected duties, and hours) to demonstrate the genuine nature of the arrangement if ever queried.
- Check current visa requirements before hosting an au pair from outside the UK.
- If your arrangement involves higher payments, fixed hours, or feels more like formal employment, treat it as such from the outset — register as an employer and operate PAYE — rather than risk a later reclassification with backdated liabilities.
Frequently asked questions
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