If you’re a construction worker or self-employed professional completing your CIS tax rebate, you’ll need your National Insurance (NI) number. It’s essential for processing your tax return correctly and ensuring you receive the refund you’re owed. If you’ve misplaced your NI number, don’t worry, there are several easy ways to find or replace it.
What is a National Insurance number?
A National Insurance number is a unique personal identifier used by HMRC to track your tax, National Insurance contributions, and benefits. It ensures the correct amount of tax is paid and helps HMRC link your employment and earnings record to you.
Everyone working in the UK must have an NI number, including those employed under the Construction Industry Scheme (CIS). Without it, you could face delays in receiving your tax rebate or paying the right amount of tax.
How can I find my National Insurance number?
You can find your NI number in several ways. If you’ve worked or paid tax before, it will already be linked to your records. You can:
Check your payslip or P60: Your NI number is usually printed on these documents.
Log in to your personal tax account on the HMRC website using your Government Gateway ID.
Look at previous correspondence from HMRC: Letters about tax, pensions, or benefits will often include your NI number.
If you still can’t find it, you can request confirmation from HMRC online. You’ll need to sign in with your Government Gateway credentials to view or print your NI number securely.
How do I apply for a National Insurance number?
If you’re new to the UK or haven’t worked here before, you may need to apply for an NI number before starting work. Applications are handled by HMRC and can be submitted online. You’ll usually need to prove your identity with documents such as your passport, visa, or biometric residence permit.
Once approved, your National Insurance number will be sent to you by post. Keep it safe, as you’ll need it for all future tax-related purposes, including your CIS rebate claim.
What should I do if I lose my National Insurance number?
Losing your NI number can be frustrating, but it’s simple to retrieve it. HMRC no longer sends replacement cards, but you can:
Log in to your personal tax account to view it
Request a confirmation letter from HMRC
Speak to your employer or accountant, who may have it on file
Avoid sharing your NI number publicly or over unsecured messages, as it’s sensitive personal information used for tax and financial identification.
Who can apply for a National Insurance number?
Anyone living and working in the UK over the age of 16 can apply. This includes UK citizens, EU nationals, and international workers with the right to work in the UK. If you’re working under the CIS, your NI number ensures that HMRC records your deductions correctly and helps you claim back any overpaid tax at the end of the year.
Why choose Tik-Tax?
At Tik-Tax, we specialise in helping construction workers and self-employed professionals claim their CIS tax rebate quickly and accurately. Our expert team ensures that your National Insurance and tax details are submitted correctly, helping you get your refund without delays.
We make tax simple. Whether you’re claiming a refund, finding your NI number, or need help with your CIS tax return, we’re here to guide you every step of the way.
Start your CIS rebate today by contacting Tik-Tax or completing our quick online form to get started.