Got a Side Gig? Here's a New Tax Break for You

The recently passed Tax Cuts and Jobs Act made some pretty significant changes to the U.S. tax code, and one in particular will have a huge impact on "solopreneurs" and taxpayers with side gigs: the qualified business income deduction, also known as the pass-through deduction.

Unfortunately, calculating this deduction can be tricky -- and you'll need to master it quickly, as the deduction takes effect this year.

What's the qualified business income deduction?

When Congress decided to change the corporate tax rate to 21%, there was concern that owners of other types of businesses would rush to incorporate and become eligible for the new rate. Legislators wanted to maintain roughly the same balance between corporations and noncorporations (also known as "pass-through entities" because of the way they pay taxes) that existed before tax reform, so they decided to give owners of noncorporations a tax break of their own in the form of a 20% deduction on their income.

Money raining down on businesspeople
Money raining down on businesspeople

Image source: Getty Images.

Calculating the qualified business income deduction

If your side gig isn't a C-Corporation -- and it probably isn't -- you'll likely be able to take the 20% qualified business income deduction beginning with the 2018 tax year. But it's not quite as simple as just deducting 20% of the income from your side gig. The way the deduction works out in practice depends on the nature of your business and whether or not you exceed certain income limits.

If your taxable income for 2018 is under $157,500 ($315,000 for married taxpayers filing jointly), you can likely claim the entire 20% deduction on income from your sole proprietorship, partnership, or other unincorporated business. The only limit that applies if you're under the high-income threshold is that you can't claim more than 20% of your entire taxable income through the deduction, but it's unlikely that your taxable income for the year will be less than your business income -- so you probably won't have to worry about this rule. If your taxable income is above the income thresholds, however, things get a wee bit more complicated.

The qualified business income deduction for high-income taxpayers

For those whose income exceeds $157,500 (for single filers) or $315,000 (for joint filers), the type of work you do will affect whether or not you can claim the pass-through deduction. Certain professional service providers are barred from taking the qualified business income deduction at all if they exceed these high-income thresholds. This includes anyone in the fields of health, law, accounting, actuarial science, performing arts, consulting, athletics, financial services, or brokerage services.