Can I file ITR U with a penalty of rs. 1000

If you are filing Updated ITR, the utility calculates 25/50% (depending upon AY 2021-22 or 2020-21) additional tax liability as penalty. No question of Just Rs. 1000/- penalty, if you have already filed return earlier...

Originally posted by : CA Rashmi Gandhi
	But when I am trying to file it is not asking any penalty @ Dhirajlal Rambhia

If return was filed earlier, there would be no extra penalty of Rs. 1000/- or Rs. 5000/- as I suggested earlier. But 25% or 50% interest on tax is as such penalty.

Yes you can file 

No penalty or fee is levied upon a person who wishes to furnish an updated return. However, he is required to pay an additional tax in accordance with Section 140B.

The additional tax shall be equal to 25% of the aggregate of tax and interest payable by a person on the filing of the updated return, where such return is furnished after the expiry of the due date of filing of belated or revised return but before completion of a period of 12 months from the end of the relevant assessment year.

Where the updated return is furnished after the expiry of 12 months from the end of the relevant assessment year but before completion of the period of 24 months from the end of the relevant assessment year, the additional tax payable shall be 50% of the aggregate of tax and interest payable.

Further, a fee under Section 234F shall be charged if such person didn’t furnish a return of income for that Assessment Year for which he is furnishing an updated return.

Cortesy... TAX MANN