My H1 start date is October 1st 2007.I am working in Texas.
What is the total Percentage of taxes(including ss and medicare) that are withheld for a
H1-B employee.I tried to search online but could not find any answer.
Thank you in advance.

Social Security (6.2%) and Medicare (1.45%) are flat taxes withheld at the rates noted.

Texas has no state income taxes, so no worry there.

For federal income tax, the first $8,800 is not taxed.

Then about the next $8,000 is taxed at 10%.

Then the next $25,000 is taxed at 15%.

Then the next $48,000 is taxed at 25%.

Then the next $85,000 is taxed at 28%.

That represents about $175K in salary. If you make more than that, let me know.