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@Critter-3 I think it might be cause my income pass the limit for claim the passive loss deduction. So my understanding is the nondeductible loss in 2021 can be carried over to future years until the passive loss tax rules allow it to be deducted. Is this right?

"although you are not required to file the NC return one should be filed to preserve the loss on the record for future use ... if you don't file they could deny the loss carryforward. " 

Yes, this is one of the reasons I want to ask if I need to file a NC tax return, even though I have not made rental income yet.