Martin Lewis is urging some 800,000 families to claim as much as £2,000 in free childcare each year.
Households can can get up to £500 tax free every three months (up to £2,000 a year) for each of your children to help with the costs of childcare. This goes up to £1,000 every 3 months (up to £4,000 a year) if a child is disabled.
Speaking to viewers of his Money Show Live on Tuesday, Mr Lewis said many people are not currently claiming the discount, the Mirror reports.