Low rate voluntary contributors (those formerly insured at Classes B, C and D) currently pay a 2.6% PRSI contribution rate (subject to a minimum annual payment of €250) to maintain their entitlement to widow's, widower's or surviving civil partner's (contributory) pension and guardian's payment.
There were 17 low rate contributors in 2017 and it is estimated that increasing their contribution rate from 2.6% to 3% with an increased minimum payment of €300 would yield €3,000.
I hope this clarifies the matter for the Deputy.