from IRS 1065 instructions
Period Covered
The 2022 Form 1065 may also be used if:
2. The 2023 Form 1065 isn't available by the time the
partnership is required to file its return.
However, the partnership must show its 2023 tax year on the
2022 Form 1065 and incorporate any tax law changes that are
effective for tax years beginning after 2022.
that's the hang up. you could file an extension.
also, you could reuse the 2022 app to create a 2023 return just not enter the fiscal year dates. but then you would have to change a lot of numbers so the beginning matches the 2022 ending numbers. then I would try to see if fiscal dates will be accepted. if not, print out and manually enter the fiscal year on the 1065 and k-1s. you would have to mail in the return. maybe a lot of work. i would just extend
