Getting Your National Insurance Number as a South African

If you have recently moved from South Africa to the UK and are preparing to work, one of the things you may hear about very quickly is your National Insurance number. It can sound more complicated than it actually is. Your National Insurance number, often called your NI number, is used to make sure your tax and National Insurance contributions are recorded against your individual record. This guide explains what South Africans moving to the UK need to know, including how to check whether you already have an NI number, when you need to apply and what happens if you start work before receiving it. IMPORTANT Your National Insurance number is not your immigration status and it is not proof of your right to work in the UK. Your right to work depends on your immigration status and the conditions attached to it. Always check the current official GOV.UK guidance for your own circumstances. WHAT IS A NATIONAL INSURANCE NUMBER? A National Insurance number is a personal reference used by HM Revenue and Customs, the Department for Work and Pensions and other government systems. It normally consists of two letters, six numbers and a final letter. For example: QQ123456B Your National Insurance number belongs to you for life. If you already have one, you do not apply for another one just because you have moved house, changed jobs or changed some of your personal details. FIRST — CHECK WHETHER YOU ALREADY HAVE ONE This is particularly important for people moving to the UK from South Africa. You may already have a National Insurance number if you have: • Worked in the UK before • Lived in the UK previously • Claimed certain benefits • Had previous dealings with HMRC or the UK tax system If you have an eVisa, you might also already have an NI number associated with your UKVI account. So before starting a new application, check whether you already have one. WHERE CAN YOU FIND YOUR NI NUMBER? If you already have an NI number, you may find it on: • Your payslip • Your P60 • Letters about tax • Pension correspondence • Certain benefit correspondence • Your HMRC online account • Your HMRC app If you have an eVisa, GOV.UK says you may also be able to find your National Insurance number by signing into your UKVI account. SAFFA TIP Don't panic if you cannot remember your NI number. If you have worked in the UK before, check your old payslips and P60s first. You may already have the number without realising it. WHO CAN APPLY FOR A NATIONAL INSURANCE NUMBER? You can apply if you: • Live in the UK • Have the right to work in the UK • Are working, looking for work or have an offer to start work If you are applying from South Africa before you have moved to the UK, you generally cannot simply apply for an NI number from overseas. The application is made when you are in the UK and eligible to apply. IF YOU DO NOT HAVE AN NI NUMBER If you have checked and discovered that you do not already have one, you can apply online through GOV.UK. You will need to prove your identity. Depending on your circumstances, you may need information from your passport or another identity document. You may also need to provide a photograph of yourself holding your passport and photographs of other identity documents. The application process will tell you exactly what you need to provide. SAFFA TIP Use the official GOV.UK service. Be very careful with websites that offer to "get your National Insurance number" for a fee. The official application is made through GOV.UK. HOW LONG DOES IT TAKE? After you have proved your identity, it can take up to four weeks to receive your National Insurance number. That means you should not leave the application until the last possible minute if you know you will need it. WHAT IF I HAVE A JOB BUT MY NI NUMBER HAS NOT ARRIVED? This is one of the most important things for new arrivals to understand. You can start work before you receive your National Insurance number if you can prove that you have the right to work in the UK. Your employer needs to establish your right to work separately from your National Insurance number. For people who use the UK's digital immigration system, this may involve providing a share code so that the employer can check your status. Your eVisa records your immigration status and the conditions attached to it, including whether you are allowed to work. SAFFA TIP Don't confuse these three things: YOUR IMMIGRATION STATUS This determines what you are permitted to do in the UK. YOUR RIGHT TO WORK This determines whether you are allowed to work and under what conditions. YOUR NATIONAL INSURANCE NUMBER This helps HMRC and other government departments keep your tax and National Insurance record correctly associated with you. They are connected, but they are not the same thing. WHAT IF YOUR EMPLOYER ASKS FOR YOUR NI NUMBER? Your employer will normally need your National Insurance number for payroll and tax purposes. Give them your NI number once you have it. If you have started work and are still waiting for your number, tell your employer what your situation is and provide the information they need to establish your identity and right to work. Do not invent an NI number or use somebody else's. YOUR FIRST PAYSLIP Once you start working, your payslip will contain important information. Get into the habit of checking it. Depending on your circumstances, you may see items such as: • Gross pay • Income Tax • National Insurance • Pension contributions • Net pay • Tax code Your first UK payslip can look very different from what you were used to seeing in South Africa. Don't be afraid to ask your employer or payroll department if you do not understand something. SAFFA TIP Keep your payslips. Even if you are paid electronically and everything appears in an app, keep copies of important payroll documents. Your payslips and P60s can become useful when dealing with HMRC, pensions, mortgages, benefits or other financial matters. PROTECT YOUR NI NUMBER Your National Insurance number is personal information. Do not share it casually. You may legitimately need to provide it to employers, government departments, pension providers or other organisations that have a genuine reason to request it. But if someone unexpectedly asks for your NI number, make sure you understand who they are and why they need it. If you receive suspicious messages asking for your NI number or other personal information, do not click links or provide your details until you have checked the source independently. WHAT ABOUT YOUR TAX CODE? Your National Insurance number and tax code are different. Your NI number identifies your tax and National Insurance record. Your tax code helps your employer or pension provider calculate how much Income Tax should normally be deducted from your pay. Your tax code can change during your working life. For example, it may change when your circumstances change or when HMRC updates your tax information. SAFFA TIP If your first payslip looks surprising, don't automatically assume your employer has made a mistake. Check your tax code and deductions first, and contact HMRC or your employer's payroll department if something does not look right. IF YOU MOVE HOUSE Moving house does not mean you need a new National Insurance number. Your NI number stays with you for life. However, make sure the relevant organisations have your new address where necessary. This is particularly important for HMRC, your employer, pension providers and financial institutions. YOUR NATIONAL INSURANCE CHECKLIST BEFORE APPLYING ☐ Check whether I already have a National Insurance number ☐ Check my eVisa or UKVI account if applicable ☐ Check old payslips and P60s ☐ Check my HMRC account or app if I have one IF I NEED TO APPLY ☐ Confirm that I live in the UK ☐ Confirm that I have the right to work ☐ Gather the identity documents I need ☐ Apply through the official GOV.UK service ☐ Keep my application reference information AFTER APPLYING ☐ Keep track of my application ☐ Tell my employer if I am waiting for my number ☐ Keep proof of my right to work ☐ Keep my first payslips ☐ Check my tax code ☐ Check my National Insurance deductions ONCE I HAVE MY NUMBER ☐ Store it securely ☐ Do not share it unnecessarily ☐ Keep it with my important UK records ☐ Remember that the number stays with me for life A NOTE FOR SOUTH AFRICANS The first few months in the UK can involve learning a whole new collection of abbreviations. NI. HMRC. PAYE. P60. P45. Tax code. It can feel like you're learning a new language on top of everything else. You don't need to understand every abbreviation immediately. Start with the basics, keep your records organised and ask questions when something doesn't make sense. And remember — thousands of South Africans have already navigated these systems. You can too. Saffa Hub is here to help you find useful information, practical services and the South African community as you build your life in the UK. LAST CHECKED: SEPTEMBER 2026 National Insurance rules and government services can change. Always check the latest official GOV.UK guidance for your circumstances. OFFICIAL SOURCES GOV.UK — Apply for a National Insurance number https://www.gov.uk/apply-national-insurance-number?utm_source=chatgpt.com GOV.UK — Find your National Insurance number https://www.gov.uk/find-national-insurance-number?utm_source=chatgpt.com GOV.UK — Prove your right to work https://www.gov.uk/prove-right-to-work?utm_source=chatgpt.com GOV.UK — View your eVisa and get a share code https://www.gov.uk/evisa/view-evisa-get-share-code-prove-immigration-status?utm_source=chatgpt.com