Threshold split
- 2026 unearned-income allowance
- $1,350
- Next slice at child rate
- $1,350
- Possible parent-rate slice
- $1,500
Apps
2026 Form 8615 threshold check
2026 Kiddie Tax Checker
Check whether a dependent child or full-time student's investment income is likely to need Form 8615 review, then share the scenario with the entered facts preserved.
Review likelyLikely Form 8615 reviewThe scenario crosses the 2026 unearned-income threshold and matches the common age/support gates.
Inputs
2026 check
Likely statusLikely Form 8615 reviewThe scenario crosses the 2026 unearned-income threshold and matches the common age/support gates.
Unearned income$4,200Over the $2,700 trigger.
Net unearned income estimate$1,500Estimated slice that may be taxed using the parent's rate.
Parent-rate tax estimate$330Uses 22% as a simple marginal-rate scenario.
Facts that can change the answer
- Whether the child is required to file a federal return.
- Full-time student status and the support test.
- Parents' return status, rates, and other children with Form 8615.