Filling in NIC contribution gaps

National Insurance credits can help qualifying applicants to fill contribution gaps in their National Insurance record. This can help taxpayers increase their number of qualifying National Insurance years, which may increase the number of benefits they are entitled to, such as the State Pension.

This could happen if someone was:

  • employed but had low earnings
  • unemployed and were not claiming benefits
  • getting National Insurance credits for less than a full tax year
  • self-employed but did not pay contributions because of small profits
  • living or working outside the UK.

National Insurance credits are available in certain situations where people are not working and therefore, not paying National Insurance contributions. For example, credits may be available to those looking for work, who are ill, disabled or on sick pay, on maternity or paternity leave, caring for someone or on jury service.

Depending on the circumstances, National Insurance credits may be applied automatically or an application for credits may be required. There are two types of National Insurance credits available, either Class 1 or Class 3. Class 3 credits count towards the State Pension and certain bereavement benefits whilst Class 1 covers these as well as other benefits such as Jobseeker’s Allowance.

Taxpayers may also be able to pay voluntary Class 2 or Class 3 National Insurance contributions to protect their entitlement to the State Pension (and in some cases other benefits) if they meet the eligibility requirements. You can only pay voluntary National Insurance contributions to fill gaps for the previous six tax years. The deadline to make payment is 5 April each year. For example, you have until 5 April 2031 to pay voluntary contributions to make up a gap for the 2024-25 tax year.

Source:HM Revenue & Customs | 23-02-2026
author avatar
Aitch
I'm Aitch, the Founder and CEO of CIGMA Accounting Ltd. As a Chartered Management Accountant and as a CIMA member, I've spent more than 16 years helping businesses, entrepreneurs, landlords, and individuals with tax planning, accounting, and HMRC compliance. As a chartered accountant in London, I'm passionate about making complex tax matters easier to understand and helping clients make confident financial decisions. Over the years, I've advised start-ups, SMEs, established companies, and high-net-worth individuals across a wide range of tax and accounting matters. My expertise includes Corporation Tax, Self-Assessment, Capital Gains Tax, Inheritance Tax planning, R&D tax relief, capital allowances, international tax, and resolving complex HMRC compliance issues. Whether clients need a business accountant, tax accountant, or strategic tax advisor, my focus is always on delivering practical advice that creates long-term value. One of my specialist areas is Making Tax Digital (MTD). I've worked extensively with businesses preparing HMRC's digital reporting requirements, helping them move to cloud accounting, improve financial processes, and adopt technology that makes compliance more efficient. I regularly speak at Making Tax Digital roadshows, industry events, and educational sessions in collaboration with Zoho Books, sharing practical insights into digital accounting, tax legislation, and the future of the profession. Many business owners looking for the best accounting firm in London are not simply searching for an accountant they're looking for trusted advice, responsive support, and long-term value. That's the approach I've taken in building CIGMA Accounting. My team and I work closely with businesses across London and the UK, providing accounting services, tax advisory, bookkeeping, payroll, VAT, company accounts, and strategic tax planning tailored to each client's goals. Through this website, I share practical guidance on UK taxation, Making Tax Digital, HMRC updates, Corporation Tax, Self-Assessment, and business finance. My aim is to provide reliable, straightforward information that helps business owners understand changing regulations, reduce compliance risks, and make informed financial decisions with confidence.