Hi @NagaSaiNikh517, thanks for reaching out!
We have a section on our Help Center for documentation regarding Taxes that you can read in this link.
For sales taxes, as we currently operate in India, Udemy is the merchant of record with students and sales tax is Udemy's responsibility to collect and report to government collections. Therefore this should not affect the way you report income. We highly recommend that you consult with a tax adviser to clarify any questions or responsibilities you may have.
For any other questions about how Udemy handles tax, please do contact our Instructor Support team here. They'll be able to provide further information about this.
I just wanted to add another piece of information I've obtained after researching this a bit further. In Udemy's case, we are required to withhold tax from copyright royalties when the student taking the course is in the US. This is separate from any tax you owe in your country.
I hope this additional information helps!