My parents passed away last year and as a result, my brothers/sister and I inherited some rental properties for the last 5 months of 2024. I know I need to report the rental income but my sister informed me that the K1 documents will not be available until later this year.

I typically file a 1040 with standard deductions and typically owe the IRS a couple of thousand dollars.

My question is whether I should file by 04/15 and then file an amendment when the K1 documents become available or I should request an extension and file when all of the documents are available?

Thanks.