TSA Paycheck Deductions 2026: Gross Pay, Taxes, FERS and TSP
The salary shown in a TSA vacancy is gross pay, not the amount that will be deposited into your bank account. Taxes, retirement contributions, insurance elections and other deductions can reduce your net pay substantially.
This guide explains the main deductions you may see and the documents you should check after starting work. It provides general information, not personal tax or financial advice.
Gross Pay Versus Net Pay
| Term | Meaning |
|---|---|
| Gross pay | Compensation before deductions |
| Net pay | Amount deposited after deductions |
| Basic pay | Underlying salary before overtime and many premiums |
| Premium pay | Eligible overtime, night, Sunday or holiday compensation |
| Leave and Earnings Statement | Payroll record showing earnings, deductions and net pay |
Gross pay can include basic salary, locality, overtime, night differential, Sunday premium and holiday premium. Net pay is what remains after mandatory and elected deductions.
Two employees with the same gross salary can receive different net pay because their tax elections, insurance coverage and retirement contributions differ.
Which Taxes Can Be Withheld?
Federal income-tax withholding depends on taxable wages, Form W-4 elections, filing status, dependents, additional withholding and pre-tax deductions. Withholding is not the same as your final annual tax liability.
State or local income tax depends on where you work and live. Some employees may also face local payroll taxes.
For covered wages in 2026:
- Social Security withholding is generally 6.2% up to the $184,500 wage base;
- Medicare withholding is generally 1.45% without a wage-base limit;
- employers withhold an additional 0.9% Medicare tax after an employee’s wages exceed $200,000 during the calendar year.
These figures do not create a complete take-home-pay estimate because other deductions still apply.
How Do FERS and TSP Affect the Paycheck?
Eligible TSA employees generally participate in the Federal Employees Retirement System (FERS). The employee contribution rate depends on retirement coverage and appointment details.
The Thrift Savings Plan (TSP) is a separate retirement-savings account. Employees can make traditional or Roth contributions under plan rules. Agency automatic and matching contributions depend on eligibility and contribution behavior.
Do not confuse the FERS pension contribution with a TSP election. They appear as separate elements of federal retirement compensation.
Use the TSA retirement benefits guide for the pension, Social Security and TSP structure.
Which Insurance Deductions May Appear?
Depending on eligibility and your elections, payroll deductions can include:
- Federal Employees Health Benefits premiums;
- dental and vision premiums;
- Federal Employees’ Group Life Insurance;
- flexible spending account contributions;
- other optional benefit programs.
Coverage and costs vary. Review the official enrollment confirmation rather than assuming a plan was activated correctly.
How Does Premium Pay Affect Deductions?
A pay period with overtime or premium pay can increase gross wages and tax withholding. The increase in net pay will therefore be smaller than the increase in gross pay.
For the underlying rules, read the TSA overtime and premium pay guide. For basic salary and locality, use the TSA pay scale guide.
How Should You Read a Leave and Earnings Statement?
Review these items carefully:
- regular pay and hours;
- overtime and premium-pay lines;
- locality or other pay adjustments;
- federal, state and local tax withholding;
- Social Security and Medicare;
- FERS and TSP contributions;
- insurance deductions;
- leave balances;
- net pay and year-to-date totals.
Check the first several statements after hiring, a promotion, a schedule change or a benefits election. Payroll errors are easier to resolve when you report them promptly and retain supporting records.
What Should You Do if a Deduction Looks Wrong?
Compare the statement with your SF-50, benefits elections, W-4, state tax forms and TSP selections. Then contact the appropriate payroll, Human Capital or benefits office through official channels.
Do not rely only on an unofficial salary calculator. A calculator may not know your retirement code, insurance plan, local tax rules or premium-pay treatment.
Frequently Asked Questions
Why Is My Take-Home Pay Lower Than the Vacancy Salary?
The vacancy generally shows gross pay. Taxes, retirement, insurance and other deductions reduce the amount deposited.
Does Everyone in the Same Band Receive the Same Net Pay?
No. Personal tax and benefit choices differ.
Are TSP Contributions the Same as FERS Contributions?
No. FERS and TSP are separate parts of federal retirement compensation.
Does Overtime Increase My Basic Salary?
No. It increases eligible gross earnings without automatically changing your band.
Before You Accept a TSA Offer
Review the salary, schedule, locality, benefits eligibility and expected deductions together. A higher advertised salary does not always produce a proportionally higher monthly deposit.
Candidates should also review the TSO hiring process, TSA test-prep guide and JobTestPrep TSA review before investing time or money in preparation.
Build a complete compensation picture with the TSA pay scale guide, pay progression guide, TSO benefits guide and retirement benefits guide. TSO applicants should also review the TSA TAB guide, JobTestPrep TSA review and the JobTestPrep TSA PrepPack.