According to the children's charity Coram, annual nursery costs for children under two in England have fallen for the first time in 15 years.
It comes as the government continues to roll out its funded childcare scheme, which will provide all eligible working parents of pre-school children, not only three and four-year-olds as currently, with 30 hours of childcare per week from September.
However, some nurseries and childminders say they may have to drop out of the scheme as government funding struggles to meet rising costs, including National Insurance increases from April.
Education Secretary Bridget Phillipson says the survey highlights "the real difference the expanded childcare entitlements are making".
In England, the government has been rolling out a scheme to help working parents with the high annual cost of childcare, which peaked at more than GBP15,000 last year.
However, currently parents of children under three years old can access 15 hours a week of childcare paid for by the government.
Coram Family and Childcare's annual survey shows the impact of the changes, with eligible working parents seeing a 22% reduction in their annual cost.
Elsewhere, prices have risen for childminders, nurseries, pre-schools and after-school care.
Wales is now the most expensive place in Great Britain for a full-time nursery place for a child under two, which costs GBP15,038.
The cost for three and four-year-olds has risen across England, Wales and Scotland.
Coram Family and Childcare's head, Lydia Hodges, said that while the funded hours in England are "a welcome step" for making childcare affordable for working parents, the system now needs to be rebalanced.
She says parents ineligible for the funded childcare "are unlikely to be able to meet the cost involved in giving their children the same amount of early education that other children get for free".
The report also found that the availability of nursery and childminder places varies between council areas, with the lowest provision for children with special educational needs and disabilities and families living in rural areas.