California Schedule C and 8829 cannot be e-Filed for the tax year 2019. Due to the recent tax law changes in CA on who is an employee vs contractor they want these forms mailed in.
In May 2019, the California Office of Tax Appeals ruled very recently that income from California-based clients is taxable as California source income.
For some discussion:
https://www.coblentzlaw.com/california-office-of-tax-appeals-gives-precedential-authority-to-bindley...
https://money.stackexchange.com/questions/95243/is-self-employed-work-performed-out-of-state-for-a-c...
The best source for current information is at this link: TurboTax State Forms Availability.
When it reads unsupported under the e-File column, taxpayers who need to file these forms will have to mail their returns.
