How can I claim my home as "office space" since I use it for an in-home daycare fulltime.

[Hal_Al]

Yes. Day care "home office" is handled differently than a regular home office. "business" use of the space does not have to be exclusive. You may designate that parts of your house are used for day care only when in use. You designate not only space, but the total hours that the space is used for day care. The TurboTax interview accommodates these entries.

[DoninGA]

Note - You will have to use the online Self-Employed (formally Home and Business) edition to report your day care business and expenses.

[SweetieJean]

This publication may be helpful:
<a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-pdf/p587.pdf">https://www.irs.gov/pub/irs-pdf/p587.pdf</a>