TCJA Makes “Kiddie Tax” Worse

small boy holding investment calculator | TCJA Makes "Kiddie Tax" Worse | Dalby Wendland & Co | CPAs | Business Advisors | Grand Junction CO | Glenwood Springs CO | Montrose COIn 1986, Congress enacted the “kiddie tax” rules to prevent parents and grandparents in high tax brackets from transferring income (usually from investments) to their children in lower tax brackets. While the tax troubled some families in the past, the Tax Cuts Jobs Act (TCJA) has made it worse today by revising the tax rate structure.

The history of the kiddie tax

The kiddie tax used to apply only to children under age 14 — which provided families with plenty of opportunity to enjoy significant tax savings from income shifting. However, the tax was expanded to children under age 18 in 2006. And since 2008, it has generally applied to children under age 19 and to full-time students under age 24 – unless the students provide more than half of their own support from earned income.

Prior to the TCJA, for children subject to the kiddie tax, any unearned income beyond a certain amount was taxed at their parents’ marginal rate (assuming it was higher), rather than their own rate, which was likely lower.

Rate is increased

The TCJA doesn’t further expand who is subject to the kiddie tax, but it has definitely increased the tax rate in many cases.

For example (for 2018–2025), a child’s unearned income beyond the threshold ($2,200 for 2019) will be taxed according to the tax brackets used for trusts and estates. For ordinary income, such as interest and short-term capital gains, trusts and estates are taxed at the highest marginal rate of 37% once 2019 taxable income exceeds $12,750. In comparison, for a married couple filing jointly, the highest rate doesn’t kick in until their 2019 taxable income tops $612,350.

Likewise, the 15% long-term capital gains rate begins to take effect at $78,750 for joint filers in 2019, but at only $2,650 for trusts and estates. And the 20% rate kicks in at $488,850 and $12,950, respectively.

Thus in many cases, children’s unearned income will be taxed at higher rates than their parents’ income and as a result, income shifting to children subject to the kiddie tax won’t save tax, but it could actually increase a family’s overall tax liability.

Note: For purposes of the kiddie tax, the term “unearned income” refers to income other than wages, salaries, and similar amounts. Examples of unearned income include capital gains, dividends and interest. Earned income from a job or self-employment isn’t subject to kiddie tax.

Gold Star military families also suffer

Sadly, an unfortunate consequence of the TCJA kiddie tax change is that some children in Gold Star military families, whose parents were killed in the line of duty, are also being assessed the kiddie tax on certain survivor benefits from the Defense Department. In some cases, their tax bills have more than tripled because the law treats their benefits as unearned income. The U.S. Senate has passed a bill that would treat survivor benefits appropriately as earned income, however a companion bill in the U.S. House of Representatives is currently stalled.

Plan ahead

Avoid inadvertently increasing your family’s taxes. Talk with your tax advisor before transferring income-producing or highly appreciated assets to a child or grandchild who’s a minor or college student. If you’d like to shift income and you have adult children or grandchildren no longer subject to the kiddie tax but in a lower tax bracket, consider transferring assets to them. If your child or grandchild has significant unearned income, contact us to identify possible strategies that will help reduce the kiddie tax for 2019 and later years.


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