Can they deduct 2017 contrib on 2018 taxes?

[BG5150]

Company wants to deduct its 2017 PS and SH contribution on its 2018 taxes?

Scenario 1:  taxes filed 3/15.   Contrib made Aug 15.

Scenario 2:  taxes on extension.  Contrib made Aug 15.  Taxes to be filed 9/15.

Scenario 3:  taxes filed 9/1.  Contrib made 11/1.

[Bill Presson]

I worked at a large CPA firm for 12+ years. Having clients deduct contributions on a cash basis wasn't unusual.

[Larry Starr]

5 hours ago, BG5150 said:

Company wants to deduct its 2017 PS and SH contribution on its 2018 taxes?

Scenario 1:  taxes filed 3/15.   Contrib made Aug 15.

Scenario 2:  taxes on extension.  Contrib made Aug 15.  Taxes to be filed 9/15.

Scenario 3:  taxes filed 9/1.  Contrib made 11/1.

And we have to assume it is a calendar year plan and calendar year taxpayer.

Scenario 1:3/15/18?  for 2017?  Full details ALWAYS please so we don't have to guess!

Assuming above, the contribution made after the return is filed WITHOUT an extension (another assumption we have to make because you didn't tell us), then it is not deductible in 2017, only 2018.

Scenario 2: Deductible in 2017 if they want to take the deduction in 2017.  They can take it in 2018 if they prefer.

Scenario 2: Assuming contribution made after their extended due date for the prior year, then same answer as 1; not deductible in prior year.

Did I guess right on all the assumptions? If not, please give us the correcd answers and we'll try again.