Big distribution by mutual fund company in Dec

Anon · 2018-12-09T04:45:48+00:00

I am hit with $20000 distribution by Fidelity. How do I pay tax on that. on W2 I don't pay estimated taxes my W2 takes care of my tax withholding but certainly can not take care of $5000 that will come as taxes on $20000. Fortunately, I have my own C corp that gives me W2. Can I just deposit extra $5000 as withholding for last month of 2018 and include in my W2? Will that be legal?