AP can perform the entire authorization function or selected portions of the process in cooperation with your host system. And, because the Visa DPS authorization system is flexible, you may customize support to meet your specific business requirements.
If desired, you can request voluntary Federal tax withholding from your monthly Social Security benefits. You may find doing this easier than paying quarterly estimated tax payments. See http://www.socialsecurity.gov/planners/taxwithold.htm.
To calculate Social Security tax withholding on 401(k) contributions, your employer first determines your gross wages for the pay period. Gross wages are your earnings before deductions.Your employer subtracts Social Security tax from your gross wages and then deducts your 401(k) contribution.For example, you earn $450 for the weekly pay period and elect 6 percent toward your 401(k) account.pecifically, if Social Security tax applies, so does Medicare tax. Your 401(k) contributions are subject to Medicare tax of 1.45 percent, as of 2012.