Federal Payroll Administration — Withholding, Garnishment, and Pay Computation

Federal employees are paid biweekly — 26 pay periods per year — under a system governed by 5 U.S.C. Chapter 55 (§§ 5501–5520a). This chapter covers the nuts and bolts of how federal paychecks are computed, what can be withheld and for what reasons, how the government recovers money owed to it by employees, what happens to pay during recess appointments, and how state and local tax withholding works for a workforce spread across all 50 states. While individual agencies handle payroll through the Federal Payroll Data Center (FPDC) or shared service centers like Interior Business Center, the legal framework is uniform across the executive branch. The rules protect employees from improper withholding (agencies cannot withhold earned pay from employees terminated for cause unless there is a legitimate debt) while also giving the government strong tools to recover debts, enforce child support and alimony obligations, and comply with state tax requirements.

Current Law (2026)

Legal Authority

• 5 U.S.C. § 5503 — Recess appointments: a person given a presidential recess appointment to a position requiring Senate confirmation may not be paid from the agency's regular appropriation if the vacancy existed while the Senate was in session and could have acted; this provision enforces separation of powers by preventing the executive from filling controversial positions through recess appointments and then paying the appointees indefinitely without Senate confirmation
• 5 U.S.C. § 5504 — Biweekly pay periods: federal civilian employees are paid biweekly; to compute an hourly rate from an annual salary, divide by 2,087 (the official work-hours count); to compute a daily rate, multiply the hourly rate by 8; the 2,087-hour figure reflects 52 weeks × 40 hours minus 11 federal holidays plus 7.5 hours for holiday pay purposes
• 5 U.S.C. § 5511 — Withholding pay from employees removed for cause: an agency must not withhold or delay paying an employee's accrued, earned pay when the employee is terminated for cause; the only exception is when the employee has a legitimate debt to the government that offsets the pay — but termination itself is not a basis for withholding earned wages
• 5 U.S.C. § 5512 — Withholding pay from employees in arrears: if an employee owes money to the federal government, the agency may withhold pay until the debt is settled; the employee (or their representative) may request that the matter be handled through an installment deduction instead of total withholding
• 5 U.S.C. § 5513 — Credit disallowed by GAO: if the Government Accountability Office finds, when auditing an official's accounts, that a payment to someone was improperly credited, the agency can withhold an equivalent amount from that employee's pay; this is the mechanism for correcting payroll errors discovered through post-payment audit
• 5 U.S.C. § 5514 — Installment deduction for indebtedness: when an employee owes a debt to the United States, the employing agency can recover it by payroll deduction at a rate not to exceed 15% of the employee's disposable pay per period; the employee must receive advance notice and an opportunity to dispute the debt or propose a repayment schedule; this is called "salary offset" and is governed by detailed OPM regulations
• 5 U.S.C. § 5515 — Jury and witness pay: if an employee receives payment for jury duty or serving as a government witness while on annual leave or official duty, that payment is credited against (reduces) the employee's regular government pay for the same period; the federal government does not pay employees to serve on juries and also allow them to keep the jury fee
• 5 U.S.C. § 5517 — State income tax withholding: when a state requires employers to withhold state income tax, the Treasury Secretary must agree to withhold state income taxes from the pay of federal employees working in that state; federal agencies comply with state withholding requirements for all states that request it
• 5 U.S.C. § 5520 — Local tax withholding: cities, counties, and other local jurisdictions can require federal agencies to withhold local income and employment taxes; the local government must have a law of general applicability requiring employer withholding; the Treasury Secretary enters into agreements with localities to implement withholding
• 5 U.S.C. § 5520a — Garnishment: federal pay is subject to legal process (court orders, garnishments) for child support, alimony, bankruptcy proceedings, and other legal obligations; the government is required to comply with valid garnishment orders; the Consumer Credit Protection Act's limits on garnishment apply to federal pay (generally capping garnishment at 25% of disposable earnings or the amount above 30 times the minimum wage, whichever is less, except for child support)

How Biweekly Pay Computation Works

Federal employees receive 26 paychecks per year (biweekly). Because the year has 52 weeks (26 two-week periods), two months each year will contain three paychecks for employees paid biweekly — a "three paycheck month" that provides a timing benefit but no additional annual compensation. The annual salary divided evenly across 26 periods determines each paycheck's gross amount.

For hourly rates, the 2,087-hour standard work year is the authoritative conversion factor: divide the annual GS or Executive Schedule base pay by 2,087 to get the hourly rate. Overtime pay for FLSA-covered employees (generally GS-10 and below) is 1.5× the hourly rate for each hour over 40 per week.

Sunday premium pay adds 25% to base pay for work on Sunday if any part of a regularly scheduled tour includes Sunday; workers can add this to their regular biweekly pay. Night differential adds at least 10% for work between 6:00 p.m. and 6:00 a.m. Holiday pay covers federal employees required to work on federal holidays. None of these differentials are explicitly in Chapter 55 — they are in Chapter 55's companion chapters — but they flow through the same payroll computation.

Salary Offset for Government Debts

When a federal employee owes money to the federal government — an overpayment they received, an unauthorized advance they didn't repay, a travel advance balance, or any other debt — the government can recover it through salary offset. The rules under §5514 and OPM's implementing regulations require:

1. Advance notice: the agency must notify the employee of the proposed offset at least 30 days before the first deduction
2. Right to dispute: the employee may challenge the existence or amount of the debt through a hearing
3. Repayment negotiation: the employee may propose a voluntary repayment schedule as an alternative to the 15% payroll deduction
4. 15% cap: the standard salary offset deduction cannot exceed 15% of disposable pay per period; "disposable pay" is gross pay minus required deductions (taxes, FEHB, FERS)

Salary offset is also used between federal agencies. If you owe a debt to the Department of Education, the IRS can receive a notification under the Treasury Offset Program and offset your tax refund; if you are employed by HHS, HHS's payroll office can be directed to deduct from your federal paycheck regardless of which agency created the debt.

Garnishment of Federal Pay

Federal employees' pay is subject to the same garnishment rules as private-sector employees, with some important differences. Under §5520a, valid court orders for child support, alimony, bankruptcy, and general creditor garnishments must be honored by federal payroll offices. The Consumer Credit Protection Act limits apply:

• For ordinary debts: up to 25% of disposable earnings (gross pay minus required deductions) per period
• For child support and alimony: up to 50% of disposable earnings (60% if not supporting another family); up to 65% if support payments are more than 12 weeks in arrears

Federal employees with multiple garnishments must have them applied in priority order: federal tax levies and child support orders generally take priority over other garnishments.

The Recess Appointment Pay Restriction

One of the more constitutionally significant provisions in Chapter 55 is the restriction on paying recess appointees. This intersects with the presidential compensation and White House staffing framework, which has its own separate pay authorities for Executive Office personnel. Under §5503, a person given a recess appointment to a position requiring Senate confirmation cannot be paid from the regular appropriation for that office if the vacancy was created while the Senate was in session — meaning the Senate could have been asked to act on the appointment but wasn't.

This provision, traceable to the 1863 Anti-Deficiency Act, enforces a constitutional bargain: the President has temporary authority to fill vacancies during recesses, but cannot circumvent the Senate's confirmation power indefinitely by relying on recess appointments and then paying the appointees year after year. Recess appointees in restricted positions can be paid from a general emergency fund while they serve, but the restriction limits the attractiveness of circumventing the confirmation process.

Implementing Regulations

The OPM regulations implementing federal pay administration live primarily at 5 CFR Part 550 — Pay Administration (General). With 174 fully summarized sections across 12 subparts, Part 550 translates the statutory framework of 5 U.S.C. Chapter 55 into operational rules. Key subparts:

Premium Pay and Overtime (Subpart A)

• § 550.101 — Coverage: applies to each employee in or under an executive agency
• § 550.105 — Biweekly maximum earnings limitation: except in declared national emergencies, premium pay may only be received to the extent it doesn't cause total pay (basic + premium) to exceed the GS-15 step 10 rate (biweekly cap); in emergencies, an annual cap of the Executive Level V salary applies
• § 550.111 — Overtime authorization: overtime is work in excess of 8 hours in a day or 40 hours in a workweek, officially ordered or approved; must be performed by the employee
• § 550.112 — Computing overtime work: detailed rules for what counts — principal activities, preshift/postshift activities, standby duty, on-call status, and preliminary/postliminary activities (mirroring FLSA interpretations)
• § 550.113 — Computing overtime pay: GS-10 minimum rate is the dividing line. Employees at GS-10 or below receive 1.5× their hourly rate (FLSA overtime). Employees above GS-10 receive the greater of 1.5× or their regular rate (a lower effective multiplier at higher grades); uncapped only in presidentially declared emergencies
• § 550.114 — Compensatory time off: at the employee's request, agencies may grant comp time instead of overtime pay for irregular or occasional overtime; comp time can be accrued and used as leave; FLSA-covered employees (GS-10 and below) must affirmatively request comp time or they receive cash overtime

Hazard Pay Differential (Subpart I)

• § 550.903 — Hazard pay differential schedule: the appendix lists specific hazardous duties and the applicable differential percentage; common categories include: working with toxic chemicals or infectious biological agents (up to 25% differential), operating high-voltage equipment, working at extreme heights, or performing duties with high physical risk
• § 550.904 — Authorization: agencies must pay the hazard differential when an employee is assigned to and actually performs a listed hazardous duty; not payable when the employee is on leave, in training, or performing other duties for the majority of the day on which the hazard is present

Severance Pay (Subpart G)

• § 550.704 — Eligibility: an employee must (1) be serving under a qualifying appointment, (2) have completed at least 12 months of continuous federal service, and (3) be removed by involuntary separation (not by voluntary retirement, resignation for personal reasons, removal for misconduct, or expiration of a time-limited appointment)
• § 550.706 — Constructive involuntary separation: an employee who resigns after receiving specific written notice of involuntary separation — or after learning that a directed reassignment or change in position would require a move to another commuting area — is treated as involuntarily separated for severance purposes
• Maximum severance: the basic severance allowance is one week's pay per year of service for the first 10 years, plus two weeks' pay per year for each year beyond 10; an age adjustment factor adds 10% for each year over age 40; total is capped at 52 weeks' pay

Lump-Sum Annual Leave Payment (Subpart L)

• § 550.1203 — Eligibility: agencies must pay a lump-sum for accumulated and accrued annual leave when an employee separates, retires, dies, or transfers to a position not covered by the federal leave system; this is not discretionary — it is a right
• § 550.1204 — Projecting the lump-sum period: the lump-sum payment equals the pay the employee would have received had they remained in service until their leave was exhausted; this means the payment is computed at the employee's rate of pay at separation (including locality pay and any applicable special rates), projected through the period the leave would cover, including pay period starts, holidays, and any scheduled pay raises during that window

Compensatory Time Off for Travel (Subpart N)

• § 550.1404 — Creditable travel time: agencies must credit comp time for time spent traveling away from the official duty station when that travel time is not otherwise compensable (i.e., outside regular work hours); credit is hour-for-hour
• § 550.1405 — Crediting: agencies credit the travel comp time to the employee's account; comp time for travel is available for use as leave; forfeited if not used within 26 pay periods

Religious Compensatory Time (Subpart J)

• Employees whose personal religious beliefs require abstaining from work at certain times may earn compensatory time by working additional hours, then using that banked time for religious observances without taking annual or sick leave — preserving leave balances while accommodating faith practices

Back Pay (Subpart H): When an employee is reinstated, restored, or paid back wages pursuant to a corrective action (MSPB decision, arbitration, EEO settlement), the back pay computation follows Part 550 — including interest on the delayed payment from the date it should have been paid.

Recent rulemakings: OPM amended Part 550 in 2022 to update the compensatory time for travel provisions and clarify that SES and SL/ST employees are eligible for religious compensatory time. Biweekly premium pay cap thresholds update annually with GS and Executive Schedule pay adjustments.

How It Affects You

If you're a federal employee trying to understand your paycheck, your Leave and Earnings Statement (LES) — accessible through myPay at mypay.dfas.mil — is the primary document. You receive 26 paychecks per year (biweekly); two months each year will have three pay dates — the extra check contains no additional annual salary, just a timing difference. Your gross biweekly pay equals your annual salary divided by 26. Mandatory deductions before you see net pay: federal income tax withholding (based on your W-4), FICA taxes (6.2% Social Security on wages up to the annual wage base — $176,100 in 2026 — plus 1.45% Medicare with no cap), FERS retirement contribution (0.8–4.4% of basic pay depending on your entry year), FEHB premium (employees pay roughly 28%, the government pays ~72%), and any voluntary FEDVIP dental/vision, FSA, or TSP contributions. Two premium pay items many employees miss: Sunday premium pay adds 25% to base pay for any regular shift touching Sunday, and night differential adds at least 10% for work between 6 p.m. and 6 a.m. If your schedule qualifies for these, verify they appear correctly on your LES — missing premium pay is a common payroll error and can be corrected retroactively.

If you received an overpayment notice or a debt collection letter from your agency, federal law gives you specific procedural protections before any salary offset begins. Under 5 U.S.C. § 5514, your agency must provide 30 days' written advance notice before taking the first deduction, explaining the debt's nature and amount. You have the right to: (1) inspect and copy agency records supporting the debt; (2) request a hearing before the offset begins if you dispute the existence or amount; and (3) propose a voluntary repayment schedule as an alternative to automatic deduction. The 15% cap means the standard offset cannot exceed 15% of your disposable pay (gross pay minus required deductions) per period unless you agreed to a higher rate. If your agency skips the 30-day notice or denies a hearing, the offset can be challenged. For unresolved disputes, the Merit Systems Protection Board (MSPB) has jurisdiction over some salary offset actions. Separately, the Treasury Offset Program (TOP) can intercept your federal tax refund for federal debts — a distinct process from salary offset that requires its own notice and dispute procedure.

If you have a child support order, alimony order, or creditor judgment and you're employed by a federal agency, the payroll office must honor valid state court garnishment orders. The Consumer Credit Protection Act (CCPA) limits apply: for child support and alimony, up to 50% of disposable earnings (60% if you're not supporting another spouse or child); up to 65% if support payments are 12+ weeks in arrears. For ordinary creditor debts, the limit is 25% of disposable earnings. If you have multiple garnishment orders, child support and federal tax levies take priority. Federal agencies cannot fire you solely because of a single garnishment order under CCPA's employment protection — but the anti-discharge protection does not apply when you have two or more separate garnishments from different creditors. If you believe the garnishment amount is wrong, you must challenge it in the state court that issued the order — the federal payroll office cannot adjudicate the underlying support or debt dispute.

If you're separating from federal service — through retirement, resignation, or involuntary removal — know your payroll entitlements at departure. Your lump-sum annual leave payment covers all accrued and unused annual leave at your separation pay rate (including locality pay); this is a statutory right under 5 U.S.C. § 5551, not discretionary. The payment is projected at your rate of pay through the date your leave would have been exhausted, including any scheduled within-grade increases during that window — verify the computation on your final DFAS pay statement. Maximum annual leave carryover is 240 hours for most employees (360 for SES), so end-of-year leave management matters for your eventual payout. Severance pay applies if you're involuntarily separated without cause (RIF, position abolishment) after at least 12 months of continuous service: one week's pay per year of service up to 10 years, plus two weeks' pay per year above 10, with a 10% age adjustment for each year over 40 — capped at 52 weeks' total pay. Retirement-eligible employees generally do not receive severance. If you're separated as part of a reduction in force, review OPM's RIF regulations for appeal rights and the bump-and-retreat procedures that may protect your position.

State Variations

Federal payroll withholding for state taxes is governed by each state's own income tax law. States without income taxes (Florida, Texas, Nevada, Washington, Wyoming, South Dakota, Alaska) do not have state withholding for federal employees. Nine states have income taxes but no withholding requirement. All other states require federal agencies to withhold state income taxes.

Pending Legislation

No major pending legislation specifically addresses Chapter 55 payroll administration. DOGE-related workforce reduction actions have raised questions about the mechanics of calculating final pay, severance, and liquidation of accrued annual leave for separated federal employees -- issues governed partly by Chapter 55 and partly by OPM's Reduction in Force regulations.

Recent Developments

• DOGE mass RIF actions overwhelmed federal payroll processing centers: The Trump DOGE initiative's rapid reductions in force in early 2025 — affecting USAID, Education, HHS, CFPB, and other agencies — created unprecedented processing loads for the federal government's four payroll shared service centers (NFC, DFAS, Interior Business Center, and SSA). Final pay, lump-sum annual leave payments (payable at the employee's rate of basic pay × unused leave hours), and TSP contribution reconciliation for thousands of employees separated simultaneously. GAO and agency inspector generals received complaints about delayed final payments, with some employees reporting weeks-long waits for checks. Under 5 U.S.C. § 5511, earned pay must be paid on separation; delays arguably violate the statute and triggered some MSPB and OPM intervention.
• Deferred resignation program created novel pay computation problems: The DOGE "fork in the road" deferred resignation offer (January 2025) — which invited federal employees to resign with pay through a specified date — created an unusual administrative and legal situation for payroll processing. OPM's legal authority to offer paid administrative leave during a mass deferred resignation period was contested; the Office of Personnel Management relied on existing administrative leave authority (5 U.S.C. § 6329a) despite the scale being unprecedented. Court orders freezing or modifying the program in some agencies created mid-stream payroll complexity. TSP employer contributions, health benefit premium computations, and FERS accrual during paid administrative leave periods required agency-specific guidance.
• Federal tax withholding and the IRS Form W-4 transition: IRS issued a revised Form W-4 in 2020 that eliminated withholding allowances in favor of step-based dollar-amount adjustments — a significant change from the system that had governed federal employee withholding for decades. Federal payroll processors and agencies have been operating under the new W-4 framework since 2020, but the transition created issues for employees who didn't update their W-4s. Federal employees who have not filed an updated W-4 are withheld at "single, no adjustments" rates, which can lead to under-withholding for employees with multiple income sources or over-withholding for employees with deductions not captured by the default.
• FERS supplement and early separation — retirement pay computation complexity: The FERS Supplement (paid to employees who retire before age 62 to bridge to Social Security eligibility) is subject to earnings testing and OPM computation that operates separately from the payroll system but affects total compensation for early retirees. The wave of early separations through VERA/VSIP incentives (Voluntary Early Retirement Authority / Voluntary Separation Incentive Pay) offered during the DOGE drawdown resulted in a surge of OPM retirement adjudications and supplement computations. OPM reported retirement application backlogs exceeding 20,000 pending cases in mid-2025, meaning separated employees waited months for their annuity computations to finalize.