As a poker dealer am I allowed to not withold taxes recieve my full check and pay all my taxes in april?

No or if you want to have your boss pay you in cash and not pay taxes at all.

You're only required to pay social security and medicare. So other than that, you can choose to have nothing withheld for federal or state taxes. Now, is that necessarily wise? I would say no. Unless you're an amazing saver.

If you get different amounts in each check, you will need to file a quarterly estimated tax return and the estimated tax at that point. Be careful not to underestimate the amounts as there is a penalty for that. Check with the IRS to be sure.

It doesn't matter if you're a poker dealer. What matters is that you're making a living in the US.

If you get a W-2, your employer withholds taxes every payday, then it's up to him to send the money to the govt every three months.

If you get a 1099 instead, then it's your responsibility to pay "estimated taxes" every three months (There are specific dates the quarterly estimated taxes are due.)

When you file a 1040 in April, you can be subject to penalties for not withholding enough each quarter, even if you end up receiving a refund for the entire year.

Legally no, the US system is pay as you go. If you wait until April to pay, you can end up paying penalties for underwithholding.