5,672 people have had their child benefit for January suspended for failing to respond to a Department of Social Protection check on details and entitlements.
The Department contacted 63,000 recipients by post last September to confirm that they still reside in Ireland and satisfy the conditions for child benefit.
Any of those people who did not write back within 42 days had their payments suspended - meaning they will have to go without children's allowance this month.
The Department says payments will be reinstated if people provide the requisite information.
Arrears will be paid once entitlement has been confirmed.
The Department says this is part of their ongoing control work to ensure resources go to those who need them most.