If a man is born after April 6, 1951, or a woman is born after April 6, 1953, they are eligible to make these voluntary contributions. This can be done online, and more information is available on
Gov.uk.
Most customers who used the online service topped up one year of their NI record, according to HMRC, with the average payment being £1,193. But some people are not eligible to top up.
You cannot pay voluntary contributions if you:
• Do not have gaps in your National Insurance record - unless you’re getting Class 3 credits and are eligible to pay Class 2 contributions.
Topping up may make sense for anyone who reaches state pension age after 2016 if they have less than 10 full years of NI contributions, as that will mean they have no entitlement to the state pension. To get a full state pension – currently £221.20 per week – you need 35 years’ worth of full NI contributions. The amount was 30 years prior to 2016.