For 2018, the seven tax brackets are: 10%, 12%, 22%, 24%, 32%, 35%, 37%. Maximum income thresholds have also changed for individuals and joint filers. As a result, employees may notice increases in take-home pay. People of all salary levels will pay less income tax in 2018. However, individuals who fall near the middle of the tax charts will see the biggest breaks. cbies / Getty Images

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The standard deduction amount for all individuals will be higher than it was in 2017. When compared with the previous year's deductions, amounts have nearly doubled. This increase will most greatly benefit couples filing jointly and individual filers. Married couples will receive a $24,000 deduction, and single filers can claim a $12,000 deduction. tvirbickis / Getty Images

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The estate exemption for 2018 is $11.2 million per individual filer and $22.4 million per couple filing jointly. This threshold is higher than it was in 2017. Individuals contributing to retirement plans including employee 401(k), 403(b) and the majority of 457 plans, as well as the Thrift Savings Plan, can now contribute more. In 2018, you can claim $500 more than 2017, for a total of $18,500. Milkos / Getty Images

People with dependent children can receive a credit up to $2,000 per qualifying child in 2018. This amount is double the allowance available in 2017. To qualify, the child must be 17 or younger. For families and single parents, the increase in the Child Tax Credit can help offset the elimination of the Personal Exemption Deduction. RichVintage / Getty Images

Employees who receive W-2 tax forms annually from their employer may need to request, review, and complete new W-4 forms. Changes to 2018 income tax will likely change how many exemptions they can claim. Proactively making any necessary adjustments to exemptions can help prevent owing taxes after filing in 2018.

Individuals can contribute more to a health savings account in 2018. The maximum amounts are now $3,450 maximum for those filing individually and $6,850 for couples filing jointly and families. These increased allowances will benefit individuals most since they see the largest increase. Married couples and people with dependents can only contribute $50 more annually than they were able to put aside in 2017, so this won't have a huge effect come tax season. People age 55 or older are eligible to contribute an additional $1,000 to their HSA. Robertindiana / Getty Images

According to the U.S. Congress’s Committee on Ways and Means, the tax overhaul had specific goals, including simplifying the tax process, providing more support to American families, and improving options for saving for education. However, 23 of the Tax Cuts and Jobs Act provisions are not permanent and will expire in 2025. The increase in the child tax credit and standard deduction amounts will both rollback at this time. izanbar / Getty Images

A new 21% tax rate for pass-through businesses including S Corporations, partnerships, and sole proprietorships goes into effect in 2018. Not everyone will qualify, though. For those who do, the deduction may only apply to a small portion of their total income. This tax break is also set to expire at the close of 2025. shapecharge / Getty Images