Retirement tax questions

I think what's important to remember is that we as self-employed individuals can make a ELECTIVE (SALARY) DEFERRAL to our 401(k) not to exceed $19500 (including what you gave to W2 401(k).  ** AND**. you can ALSO contribute a deductible portion as a profit-sharing part of your 401(k). So, in my case, it looks like that's an additional $28K.