I am having the same issue today trying to file 1120S - 2020, through the Turbotax Business 2020 product. The updated pages were loaded this morning, all review validations have passed, and the digital signature has been attached.
When I try to 'Transmit Returns Now', I get the pop-up... "You cannot e-file this tax return because the Intuit Electronic Filing Center is not open for the season yet. We accept 2020 Federal S-Corporation tax returns from beginning of tax season to end of tax season. We'll see you then!"
This is obviously not the correct reason for the error as we are beyond the beginning of tax season!
Please provide some accurate information for resetting my expectations - Thank You.
