Reported tips are wages
A tip you report is added to your wages for the pay period. It carries the employee share of Social Security at 6.2%, up to the annual wage base, and Medicare at 1.45% with no cap, and your employer owes a matching share of both.
Federal income tax is withheld on the reported tips through the pay period, using the Form W-4 on file, so the amount of income tax depends on your own bracket rather than on the size of the tip. This page prices the payroll tax, which is the same for everyone.