Federal Income Tax
The IRS releases a new tax guide for each calendar year, also known as Publication 15. The tax guide contains tax tables for federal income tax, as well as other information. The tax tables begin on page 52 for biweekly pay. You will use the tax table that matches your W-4 marital status and allowances for biweekly pay.
Percentage Method Tables for Income Tax Withholding
(For Wages Paid in 2019)