Two people with a mortgage on a house, can take the full deduction instead of splitting it based on a landmark ruling, why do you suggest otherwise?

[mc4319]

https://www.accountingweb.com/tax/irs/irs-relents-on-double-mortgage-interest-deduction-for-unmarrie...

[VolvoGirl]

That doesn't mean they can each take 100% deduction.  Just if the mortgage is 2.2 million they can each take interest on up to 1.1 million.  Not 1.1 million total for the whole house.  

[Zbucklyo]

It is no longer $1.1 million for new mortgages, only grandfathered ones.

[Zbucklyo]

Yes, unmarried taxpayers are individually allowed to deduct mortgage interest on up to $750,000 of principal balance (on a new mortgage), so theoretically they can deduct the loan interest on a $1.5 million mortgage if it is equally split.  However, they are not allowed to double-count the mortgage interest paid, regardless of the size of the mortgage.