Should you pay voluntary Class 2 National Insurance?

Self-employed earners whose earnings exceed the lower profits limit (set at £12,570 for 2025/26) must pay Class 4 National Insurance contributions on their profits. These are payable at the rate of 6% on profits between the lower limit and the upper limit, set at £50,270 for 2025/26, and at a rate of 2% on profits in excess of the upper profits limit. I…