 "Trump announces one of the biggest tax cuts in US history: Key highlights")
Here is everything you should know
Corporate tax at 15%
The new tax proposal proposes to bring down the corporate tax from the current 35 per cent to 15 per cent, significantly lower individual tax rates, and eliminate several tax rates like the death tax.
This would "unlock" the US economy, give a big boost to businesses, create jobs and bring trillions of dollars stacked overseas by its companies, US Treasury Secretary Steven Mnuchin told reporters at a joint White House News conference with the National Economic Director Gary Cohen.
"This tax reform package is about economic growth and creating jobs," Cohen said as he and Mnuchin outlined the growth of the tax cuts announced by the Trump administration.
Individual tax bracket details
For individuals, the Trump administration proposes to reduce the existing seven tax brackets to three tax brackets of 10 per cent, 25 per cent and 35 per cent; doubling the standard deduction and provide tax relief for families with child and dependent care expenses.
It simplifies to eliminate targeted tax breaks that mainly benefit the wealthiest taxpayers, protects the home ownership and charitable gift tax deductions, repeals the Alternative Minimum Tax, repeal the death tax and repeals the 3.8 per cent Obamacare tax that hits small businesses and investment income.
There is also a territorial tax
In addition to a flat 15 per cent business tax rate, the Trump administration proposed territorial tax system to level the playing field for American companies, one-time tax on trillions of dollars held overseas and eliminate tax breaks for special interests.
Married couple won't pay tax on first $24,000 of income they earn
"We are going to double the standard deduction, so that a married couple won't pay any taxes on the first USD 24,000 of income they earn. So, in essence, we are creating a zero tax rate for the first USD 24,000 that a couple earns," Gary said.
"The larger standard deduction also leads to simplification because far fewer taxpayers will need to itemise, which means their tax form can go back to that one simple page that I talked about earlier. Families in this country will also benefit from tax relief to help them with child and dependent care expenses," he said.
Mnuchin said the objective is to make US businesses the most competitive in the world.
"Right now we have a 35 per cent corporate rate on worldwide income in deferral. It is perhaps the most complicated and uncompetitive business rate in the world. Not a surprise that companies leave trillions of dollars offshore," he said.
"Under the Trump plan, we will have a massive tax cut for businesses and massive tax reform in simplification. As the president (Donald Trump) said during the campaign, we will lower the business rate to 15 per cent; we will make it a territorial system; we will have a one-time tax on overseas profits, which will bring back trillions of dollars that are offshore to be invested here in the US, to purchase capital and to create jobs," Mnuchin said.
Asserting that the president is determined to unleash economic growth for businesses, the treasury secretary said this is not just about large corporations.
Small and medium-size businesses will be eligible for the business rate as well, Mnuchin added.
No border-adjustment tax
Trump's proposal will not include a controversial "border-adjustment" tax on imports that was in earlier proposals floated by Republicans in the U.S. House of Representatives as a way to offset revenue losses resulting from tax cuts.
Trump also may cap the individual top tax rate at 33 percent, repeal the estate and alternative minimum taxes and cut taxes for the middle class, analysts said.
Whether Trump will include provisions that could attract Democratic votes, such as a proposal to fund infrastructure spending or a child-care tax credit as proposed by his daughter Ivanka, is still the subject of speculation.