Retirement tax questions

Hi @dmertz 

I have a similar question. I am over 55.

With my employer, I was able to put 12.2K in my 401K - as reported on my w-2

But then I started a consulting business, and also opened a i401K.

When I click Maximize deductions, TurboTax comes up with a number of $33K that I can contribute. And Looking at the worksheet - I cannot see how it is computing that. Also It doesn't to seem to change when I change the value of 12.2K from my W-2.

So I computed the numbers manually using the worksheet from the irs. 
So the question is - Can I contribute 19,500 - 12,200 (from my w-2), + 6500 (catchup) + Employer Contribution (from my personal business)

Thaks