National is promising to crack down on welfare fraud, with plans to target those who lie about their relationships and benefit recipients on drugs or on the run from police.
Prime Minister John Key today announced further welfare reforms aimed at preventing people from getting a "a free ride''.
Mr Key said up to 12 per cent of those who received benefits in the last year were not entitled to them, and more needed to be done to safeguard taxpayer money.
National would strengthen the authorities' investigative powers by funding a new team of fraud specialists, and would review legislation with a focus on making it easier to prosecute people who abused the welfare system, Mr Key said.
"In particular, we will review the rules around relationship fraud, and make clearer the rules around when benefit recipients need to let Work and Income know about any relationships they are in.''