Sole Prop Net Comp - Unpaid Required Contributions

Hopefully a quick question that I think I know the answer to.....

Regardless of penalties and other fees, filings, etc and assuming a flat $ CB credit for simplicity...

If a sole prop reports $200,000 on a Schedule C for 2018 and 2019 and has a $50,000 minimum required contribution to their CB plan for 2018 but does not actually make the contribution, the Plan compensation for 2018 is $200,000 minus 1/2 SE Tax and no other adjustments.  

If they make a contribution in 2020 of $120,000 for 2019 and 2018 and deduct those contributions in 2019, then the plan comp for 2019 is $200,000 minus 1/2 SE Tax minus $120,000.  Is this correct?

That would seem correct.

Right