Low-income working families eligible for the minimum family tax credit will receive an extra $52 a year from next April 1.
Revenue Minister Todd McClay said the minimum family tax credit currently ensures families who work the minimum number of hours and are not receiving a benefit will have an after-tax income of $22,724 a year.
"This will rise to $22,776 a year from 1 April 2014."
The minimum family tax credit provides a guaranteed minimum family income to families who are in work and ensures they are no worse off moving off a benefit and into paid employment.
The increase, which reflects small inflation rises, was approved by Order in Council on 21 October 2013.