United States guides
US paycheck and tax guides
Practical explanations for federal withholding, FICA, retirement deductions and job decisions.
Paychecks and withholding
State-specific withholding guides
These guides cover states with distinctive payroll inputs or withholding methods, such as state allowance counts or withholding codes. The calculator supports all 50 states and Washington, DC; this is not a complete list of supported jurisdictions.
Montana withholding explained
Understand the federal-standard-deduction baseline.
North Dakota withholding explained
Understand the annual percentage tables.
New Mexico withholding explained
Understand the FYI-104 withholding tables.
Vermont withholding explained
Understand the annual payroll table and W-4VT allowances.
Connecticut CT-W4 codes
Understand how withholding codes change the estimate.
District of Columbia tax
Learn how DC rates and allowances affect take-home pay.
Work and planning
W-2 versus 1099
Compare employee and contractor trade-offs.
How a 401(k) affects pay
See why retirement contributions change a paycheck.
Quarterly estimated tax
Understand planning payments for non-PAYE income.
Relocation salary comparison
Compare pay when moving between locations.
What is in a mortgage payment?
Budget beyond principal and interest.