The personal allowance (£11,000 - 2016/17) to increase to £11,500 - 2017/18.
The 40p tax threshold (£42,385 - 2016/17) to increase to £45,000 - 2017/18.
Those comparative figures are actually 2015/16. For 2016/17 the personal allowance is £11,000 and the 40p threshold is £43,000.
It is not only tax rates, but the ease of savings and paying tax that is important. I thought one of the interesting things proposed in this Budget is a new pension's dashboard, described in the Red Book (
https://www.gov.uk/government/publications/budget-2016-documents/budget-2016)
"Pension Dashboard – The government will ensure the industry designs, funds and launches a pensions dashboard by 2019. A pensions dashboard is a digital interface where an individual can view all their retirement savings in on place."
and
3.14 Understanding pension savings "As people work longer and change jobs more often, pension savings can become confusing. The average person will move employers 11 times over their working life, meaning they could end up with 11 or more private pensions by the time they retire. Research shows that over a third of people approaching retirement find it difficult to keep track of their pension pots. To help the next generation to clearly view their pensions savings, the government will ensure the industry designs, funds and launches a pensions dashboard by 2019. This will mean an individual can view all their retirement savings in one place."
It is also worth reading Section
4.11 Modernising tax collection, to read about the continuing plans for "Making Tax Digital programme", and extending HMRC customer service to 7 days a week.
I am not aware that the IRS has any similar initiatives in the pipeline. I guess it is that the IRS is more poorly funded, the US prefers privatized tax calculation and collection, it is a bigger country, and has the complication of 50 states.