Finance experts have warned parents and workers of "brutal flaws" in the tax system that could see them lose out on thousands of pounds in benefits and tax breaks.
In the worst-case scenario, an individual could lose out on a whopping £14,000 if they were handed a pay rise of just £1 per year.
Analysis from stockbroker and investment platform AJ Bell revealed that a parent could lose thousands of pounds in childcare benefits if their salary went just over £100,000 a year.
