From 6 April, most people will pay less income tax. The tax-free personal allowance is set to rise to £12,500 (from £11,850 in the 2018/19 tax year). This is the amount that most people will be able to earn before they pay any income tax. The rise should give basic-rate taxpayers a £130 boost.
The amount people earn before they pay higher-rate tax at 40% is also rising from £46,350 to £50,000. This will give higher-rate taxpayers an extra £860 a year and means there will be nearly one million fewer higher-rate taxpayers.
Additional-rate taxpayers will be taxed at 40% for any income between £50,000 and £150,000 and will still be taxed at 45% for income above £150,000. They will be £600 better off over the year.
some other changes here :- https://www.moneywise.co.uk/work-family ... m_content=