You can access the Check Your State Pension forecast service on GOV.UK via this link: https://www.gov.uk/check-state-pension. This digital service is provided jointly by HM Revenue and Customs (HMRC) and the Department for Work and Pensions (DWP).
The service enables most individuals under State Pension age to view their pension forecast and identify any gaps in their National Insurance Contributions (NICs). This feature is particularly useful for those who want to make voluntary NIC contributions to boost their entitlement to benefits such as the State or New State Pension.
Typically, HMRC permits voluntary contributions for the past 6 tax years, with a deadline of 5 April each year. However, there is currently a special opportunity to address NIC gaps from April 2006 to April 2017 due to transitional arrangements related to the new State Pension. The deadline for making these contributions has been extended several times and is now set for 5 April 2025.
Regularly reviewing your State Pension status is important for optimising your benefits. Additionally, you should consider other savings or pensions you may need for a secure and comfortable retirement.