During initial plan selection
Go to the Your Budget page.
Scroll to the bottom and add your dependents.
Enter each dependent's name, date of birth, gender and SSN.
Mid-year (needs a Qualifying Life Event)
Log into app.thatch.com and click Add qualifying life event at the top of your dashboard.
Pick your QLE from the dropdown, such as birth, marriage, loss of coverage or a move. Enter the event date and click Next.
On the Dependent changes page, click Add dependent. Enter their full legal name, date of birth, gender, SSN and relationship to you. A newborn without an SSN can use Skip SSN entry. Email support@thatch.com once you have it.
Review the updated allowance and premium. You can keep your current plan and add the dependent, or shop for a new plan for the whole family.
Upload documents that verify the QLE, such as a birth certificate, marriage certificate or loss-of-coverage letter.
Submit.
Timing
You have 30 days from the event to use the self-serve flow. If you're past 30 days but within 60, contact support@thatch.com and they can extend your window.
If you submit before the 25th, coverage starts the 1st of the next month. If you submit on or after the 25th, it may start the month after that. Births and adoptions can be backdated.
If you're on Medicare, or your household has members on different plans, email support@thatch.com first.
If a dependent needs a different plan than the rest of the family, they enroll separately outside of the Thatch app. Support then adds that dependent and their plan manually.