Social Security
National Insurance Contributions (NIC) for Expats & Seconded Workers
Class 1, Class 4, and Class 3 voluntary NIC contributions, 52-week exemption rule for seconded workers, and social security totalization agreements.
Key Statutory Thresholds & Rules (2025/2026)
Employee Class 1: 8% on earnings £12,570–£50,270 (2% above). Employer Class 1: 15% above £5,000. Voluntary Class 3: £17.75/week (£923.00/year).
HMRC Compliance & Tax Planning Checklist
- Verified against GOV.UK Statutory Tax Guidance and HMRC Finance Act updates.
- Applies to UK tax year: 6 April 2025 – 5 April 2026.
- Self-Assessment deadlines: 31 October (Paper) / 31 January (Online).
Important Notice: HMRC rules change based on your individual ties, physical presence days, and residency history. Always consult a qualified Chartered Tax Adviser (CTA) for personal filings.