Tax cuts are changes to tax law that effectively reduce the amount of tax you pay.
The article below is accurate for your 2017 taxes, the one that you file this year by the April 2018 deadline, including a few retroactive changes due to the passing of tax reform. Some tax information below will change next year for your 2018 taxes, but won’t impact you this year. Learn more about tax reform here.
The term “tax cuts” can seem a little confusing because it's a broad term that covers a wide range of situations that result in a lower amount of tax collected by the government. The one thing all tax cuts have in common is that they change a preexisting tax law or implement a new one that effectively reduces the amount of tax you have to pay.
Cutting income tax rates
A common tax cut that the U.S. Congress and various state governments offer periodically is a reduction in the income tax rate. This is a very broad way of reducing income taxes since all taxpayers will benefit automatically.
As of 2017 for example, the lowest rate of tax the U.S. government charges you is 10 percent. If this changes next year to 8 percent, then Congress has issued a tax cut. To illustrate, suppose you file as single and have $8,000 of taxable income. Using the 10 percent rate, you will pay $800 of income tax. However, after this tax cut, you only pay $640.
Temporary tax cuts
In some cases, governments will cut taxes for a specific amount of time to stimulate the economy with the tax cut disappearing in the next tax year.
A perfect example is the temporary reduction of the Social Security tax rate from 6.2 to 4.2 percent during the 2012 tax year. However, in 2013 and beyond, the rate returned to 6.2 percent. Similarly, in 2009 Congress allowed those receiving unemployment compensation to exclude the first $2,400 of it from taxable income. As of 2011, this $2,400 exclusion is no longer available and ever since then you must report 100 percent of your unemployment compensation on your tax return.
Expanding tax brackets
Most governments that charge an income tax use a progressive system of taxation. That is, various income tax rates apply to specific ranges or brackets of income. Rather than employing a tax cut with a reduction in tax rates, a similar result occurs when the range of income subject to the lower tax rates increases.
For example, during 2017 the IRS imposes tax at the rate of 10 percent on your first $9,325 of taxable income. If the range for the 10 percent bracket increases to your initial $12,000 of taxable income, then this tax cut can save you a significant amount of money since less of your income is subject to tax in the higher brackets.
Increasing deduction limits
A majority of the deductions you claim have limitations in the amount you can deduct or the maximum income you can earn to be eligible to claim it.
For example, when you itemize deductions, you can include the portion of your total medical expenses that exceed 7.5 percent of your Adjusted Gross Income (AGI) for 2017 and 2018. However, if Congress ever decides to reduce this AGI limitation or eliminates it entirely, this is effectively a tax cut since the end result is that you pay less in taxes when you are able to claim a higher deduction.
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