Challan ITNS 280.

Dear Sir,

Tax Liability is discharged in various ways -

1) TDS/TCS - When ur customer/buyer deposits Tax on ur behalf & issues certificate to you.

2) Advance Tax - When assesse pays tax in respect of a Financial year during the FY itself.

3) Self Assesment Tax - When tax is paid by the assesee on his own after the end of the Financial yaer.

4) Tax on regular assessments- When Tax is found payable as a result of a assessment scrutiny or otherwise, then it is known "Tax on regular assessment"