Deduction Timing of Employer Contributions

[Lou S.]

Having a minor brain cloud this morning. For calendar year tax payor do I have the timing of deductible employer contributins correct -

Corp (regular c or sub-S) 3/15 - extended 9/15

Partnership (or LLP) 4/15 - extended 10/15 but must fund by 9/15 (I think that chnged 2 or 3 years ago if memory serves)

Sole Proprietor (or single member LLC taxed as sole prop) 4/15 - extended 10/15 can fund by 10/15

Am I wrong on any of these dates?

Thanks

[PensionPro]

I believe the extended due date for partnership returns is 9/15.

[Lou S.]

I believe the extended due date for partnership returns is 9/15.

Thanks, I believe you are right. I think I was confusing the partnership return with the partners individual 1040.