A standard deduction works like this: If a couple filing jointly earns $70,000, they deduct $12,600 from their income, adjusting their income to $57,400. They then would pay taxes on the $57,400 in income, not the $70,000 they earned. Increasing the standard deduction would reduce their taxable income, ensuring that they can keep more of their money. A taxpayer who claims the standard deduction cannot also itemize deductions for items such as mortgage interest or charitable giving. But if the standard deduction is large enough, many would be likely to bypass the itemized deduction.

The nonpartisan Tax Policy Center estimated last year that if Trump raised the standard deduction as much as he proposed during the campaign, about 27 million of the 45 million tax filers who itemized their tax breaks in 2017 would instead opt to take the standardized deduction, creating a much simpler process.

This would also match one of the goals outlined by Treasury Secretary Steven Mnuchin. He has said that filing taxes has become too complicated for many Americans and that his goal would be for many Americans to be able to file their taxes on a “large postcard.”