Severance Package Calculator – Calculate Your Severance Pay & Taxes | SoCalSolver
Calculate severance pay with our severance package calculator. Estimate net payout, taxes, biweekly payments, and unemployment impact. Works for federal, state, and private sector severance.
A severance package is a financial settlement offered to employees whose employment is being terminated. This calculator helps you estimate your severance pay, understand tax implications, and plan for the months ahead after job loss.
Severance is typically offered for involuntary separations (layoffs, facility closures, reduction in force) but is not legally required in most private sector situations. However, federal employees, union workers, and employees covered by employment contracts may have guaranteed severance rights. The amount varies dramatically by tenure, age, industry, and employer policy.
Understanding your severance is critical: the gross amount looks attractive until you factor in federal income tax (22%), Social Security (6.2%), Medicare (1.45%), and state income taxes (0-15%)—leaving you with just 55-70% of the gross amount. This calculator accounts for all tax withholding and shows you the net amount you'll actually receive, along with biweekly payment estimates and unemployment benefit interactions.
Results
Annual Basic Pay
$60,000.00
Years of Service (Full)
10
Additional Months
0
Total Service (Years + Months)
10
Current Age (Years)
45
Age Months (for adjustment)
0
Total Age (Years.Months)
45
Weekly Pay Rate
$1,153.85
Biweekly Pay Rate
—
Calculation Method
—
Service Weeks (Basic Formula)
0
Basic Severance Pay (Before Adjustments)
—
Age Adjustment Factor
1
Age-Adjusted Severance Pay
—
Maximum Severance Cap
—
Final Severance Pay (Capped)
—
Total Severance Duration (Weeks)
—
Biweekly Gross Payment
—
Federal Income Tax Withholding
—
Social Security Tax (6.2%)
—
Medicare Tax (1.45%)
—
State Tax Rate (%)
500.00%
State Income Tax
—
Total Tax Withholding
—
Effective Tax Rate (%)
—
Net Severance Payment (After Taxes)
—
Estimated Net Biweekly Payment
—
Severance Payment Duration (Weeks)
—
Number of Biweekly Payments
—
Termination Reason
—
Eligible for Severance?
—
Unemployment Benefit Impact
—
Severance Negotiation Potential
—
Related calculators
Methodology
Our severance calculator uses four primary calculation methods based on your employment situation: Federal (OPM) formula for U.S. federal civil service employees, and three private sector formulas (1 week per year, 2 weeks per year, or tiered approach). Each method starts with a core calculation: Weekly Pay Rate × Years of Service × Applicable Multipliers.
The Federal OPM formula is most complex: it calculates weekly pay by dividing annual base pay by 52 weeks, applies tenure-based weeks (1 week per year for first 10 years, then 2 weeks per year for additional years, plus 0.25-week increments for partial years), applies a critical age adjustment factor (1.0 for under 40, increasing to 3.5 for age 65+), and finally caps total severance at 52 weeks of pay. This age factor is crucial: a 55-year-old federal employee receives 2.4x the severance of a 40-year-old with identical tenure.
Private sector calculations are simpler: multiply your weekly pay by the applicable weeks per year × years of service. The tiered approach (our recommended middle ground) rewards longevity: 1 week per year for the first decade, then 2 weeks per year for service beyond 10 years. This aligns with common industry practice and fairly compensates long-term employees.
Tax withholding follows IRS guidelines: severance is treated as regular wages subject to federal income tax (22% flat rate for supplemental payments, or W-4-based calculation if paid with regular paycheck), Social Security tax (6.2% up to annual wage base of $176,100), Medicare tax (1.45% plus 0.9% additional for high earners), and state/local income taxes (0-15% depending on jurisdiction). We apply standard federal withholding (22%), default state rate (you can adjust), and FICA taxes, giving you a realistic net figure.
Payment structure typically distributes severance in biweekly installments (matching standard payroll) rather than lump sum. This extends cash flow over weeks or months rather than depleting severance in a single check. For example, $46,500 severance at $1,500/week = approximately 31 weeks or 15-16 biweekly paychecks.
Worked examples
Example 1: Federal Employee with Age Factor
Demonstrates how age significantly increases federal severance. Maria, a 47-year-old federal analyst with 18 years of service and $78,000 annual pay, is caught in a reduction-in-force (RIF). Using the federal OPM formula: Weekly pay = $78,000 ÷ 52 = $1,500. Service weeks = 10 years × 1 week + 8 years × 2 weeks = 26 weeks. Basic severance = $1,500 × 26 = $39,000. Age factor for 47 years old ≈ 1.575 (because she's past 40). Adjusted severance = $39,000 × 1.575 = $61,425. Federal cap = $1,500 × 52 = $78,000 (not exceeded). Final severance = $61,425 gross. After taxes (22% federal + 6.2% Social Security + 1.45% Medicare + 5% state) = $13,512.75 + $3,808.35 + $890.65 + $3,071.25 = $21,283 total withholding. Net payment = $40,142. This would be paid in biweekly installments of approximately $3,000 gross ($1,959 net) for about 20 biweekly periods.
Interpretation
Results provide an indicative estimate useful for informed decisions.
Example 2: Private Sector Manager with Tiered Formula
Shows realistic private sector severance with negotiation potential. James, a 52-year-old operations manager at a Fortune 500 company, is offered severance as his position is eliminated. Base salary = $110,000, tenure = 13 years. Using tiered formula (1 week/year for first 10 years, 2 weeks/year beyond): First 10 years = 10 weeks, additional 3 years × 2 weeks = 6 weeks, total = 16 weeks. Weekly pay = $110,000 ÷ 52 = $2,115.38. Base severance = $2,115.38 × 16 = $33,846.08. However, James is at management level with 13+ years tenure and age 52—he negotiates. Employer's opening offer was 16 weeks, James negotiates for 24 weeks (50% increase) citing strong performance and tenure. Revised severance = $2,115.38 × 24 = $50,769.12. Gross: $50,769. Taxes: 22% federal ($11,169) + 6.2% SS ($3,147.68) + 1.45% Medicare ($735.65) + 6% state ($3,046.14) = $18,098.47. Net = $32,670.53. Plus employer offers 6 months health insurance continuation ($2,500 value) and outplacement services ($1,500 value). Total value ≈ $36,670 cash + $4,000 benefits. James stays covered through health insurance and has professional job placement support during transition.
Example 3: Early-Stage Startup Employee (Limited Severance)
Shows common scenario for startup employees with minimal severance. Alex, age 31, has worked at a tech startup for 2.5 years with $95,000 salary. Startup is acquired and his role is eliminated. Startup's policy: 1 week per year of service (no bonuses, no special considerations). Years of service = 2.5 years = 2.5 weeks. Weekly pay = $95,000 ÷ 52 = $1,826.92. Basic severance = $1,826.92 × 2.5 = $4,567.31. After taxes (22% federal + 6.2% SS + 1.45% Medicare + 5% state) = $1,004.82 + $283.17 + $66.22 + $228.37 = $1,582.58. Net = $2,984.73. Paid as single lump sum. Though age and tenure don't qualify for negotiation, Alex immediately applies for unemployment benefits (startup layoff qualifies him). Unemployment ($400/week in his state × 26 weeks) = $10,400 total, which combined with severance provides bridge income during job search. Lesson: startup severance is typically minimal due to early tenure; unemployment becomes critical supplement.
Key takeaways
Severance pay is a one-time or limited-duration payment for employees experiencing involuntary separation. It is not legally required for private sector employees except under specific circumstances (WARN Act, employment contracts, union agreements) but is mandatory for federal civil service employees.
The amount you receive depends on: (1) your annual salary, (2) years of service, (3) your age (especially if federal), (4) calculation method used, (5) your employer's policy or legal requirements. Federal formulas favor age and tenure; federal employees over 40 receive substantial age multipliers (1.0 to 3.5x). Private sector typically uses simpler 1-2 weeks per year approaches.
Always negotiate severance if possible, especially for management positions or long tenure. Initial offers are often opening positions; increases of 20-50% are realistic for most situations. Have documentation ready: performance reviews, tenure records, market rates for your role.
Tax withholding is substantial: expect 30-40% of gross severance to go to federal (22%), Social Security (6.2%), Medicare (1.45%), and state taxes (0-15%). Your net will be 60-70% of the gross amount. Plan cash flow accordingly.
Severance and unemployment are separate: severance is one-time payment/installments; unemployment is ongoing weekly benefit. Some states delay unemployment while you're receiving severance installments; others reduce unemployment dollar-for-dollar. Check your state's rules. After severance exhausts, apply for unemployment benefits if still jobless.
Keep documentation: severance agreements, final pay stubs, tax forms (W-2/1099-NEC), unemployment claim records. Consult a tax professional if severance pushes you into a higher tax bracket or if you received a large lump-sum bonus that same year.
Frequently asked questions
Is severance pay required by law?
Severance is legally required only in specific situations: (1) Federal civil service employees (mandatory per 5 U.S.C. 5595), (2) WARN Act triggers (60-day notice for 50+ employee layoffs), (3) Employment contracts specifying severance (union, executive agreements), (4) Some state-specific scenarios or collective bargaining agreements. Most private sector companies offer severance as a business practice, not legal requirement, but amounts vary widely. Check your employee handbook or ask HR about your company's severance policy.
What counts as 'annual basic pay' for the calculation?
Annual basic pay includes: base salary, locality pay (federal employees), special rate supplements, standby duty premiums, and administratively uncontrollable overtime (federal). Exclusions: bonuses (unless your severance agreement specifies otherwise), commissions, incentive pay, cash awards, shift differentials, and regular overtime. If unsure, check your latest W-2 or ask your HR department which components count. Using the wrong pay figure can significantly affect your calculation.
Why does age matter in federal severance calculations?
Federal OPM severance includes an age adjustment factor because older workers face greater reemployment challenges. The factor starts at 1.0 for employees under 40 and increases to 3.5 for employees 65+. Example: At age 40 it's 1.0×, at age 45 it's 1.55×, at age 50 it's 1.975×, at age 55 it's 2.4×. This is NOT age discrimination—it's an intentional policy advantage that increases severance for older workers. Private sector severance typically does not include age factors (except as part of negotiation).
How much will I actually receive after taxes?
Severance is 100% taxable as regular income. Standard withholding: 22% federal income tax (flat rate for supplemental payments), 6.2% Social Security (FICA), 1.45% Medicare, plus your state income tax (0-15% depending on location). Total withholding typically ranges 30-40%, leaving you with 60-70% of the gross amount. Example: $50,000 gross severance with 38% total tax = $19,000 withheld, net $31,000. Your actual tax liability may differ based on overall income that year; consult a tax professional if you anticipate owing more or are owed a refund.
What's the rule of thumb for severance amounts?
Most common: 1-2 weeks of pay per year of service. Federal uses a tiered approach (1 week per year for first 10 years, 2 weeks per year beyond). Executive/management severance can be negotiated higher (2-6 months or more). Very rough estimates: 5 years service = 5-10 weeks pay; 10 years = 10-20 weeks pay; 15 years = 15-30 weeks pay; 20+ years = 20-40+ weeks pay. But this varies enormously by industry, role, location, and negotiation. Always ask HR for your company's specific policy.
Can I negotiate my severance amount?
Often yes, especially for management positions (20-50% increases are realistic) or long tenure. Federal severance is generally not negotiable (it's mandated by statute). Private sector severance offers are typically starting points. Negotiation tips: (1) Have documentation (performance reviews, tenure records, market data for your role), (2) Negotiate immediately when offered—don't wait, (3) Request more weeks of pay, extended health insurance coverage, outplacement services, or a positive reference, (4) Get any agreement in writing, (5) Consult an employment attorney if substantial amount is involved. Even modest increases can mean thousands in additional income.
How does severance affect unemployment benefits?
Severance and unemployment are separate programs, but severance affects unemployment timing and amounts (state-specific). Most states: severance is treated as income that delays or reduces unemployment benefits dollar-for-dollar. Example: $20,000 severance over 10 weeks delays unemployment by ~10 weeks. Some states (NY, TX): severance in installments delays benefits until installments end. Federal/state rules vary significantly. Action: (1) Check your state unemployment agency website, (2) When applying for unemployment, report your severance, (3) After severance exhausts, reapply for unemployment benefits immediately. Severance ends, unemployment begins—they're sequential, not simultaneous.
What if I was terminated 'for cause'?
Severance is typically not paid for termination for cause (theft, misconduct, policy violation, poor performance). However, exceptions exist: some employment contracts guarantee severance regardless; some states/jurisdictions limit 'for cause' definitions narrowly. If terminated for cause, review: (1) Your employment contract/severance agreement, (2) Company handbook on severance eligibility, (3) State employment laws, (4) Consider consulting an employment attorney if you believe the termination was unjust or if you have a contract. You may have legal recourse even if severance is denied.
What if my employer didn't provide 60-day WARN Act notice?
Under the WARN Act (Worker Adjustment and Retraining Notification), employers must provide 60 days advance notice for mass layoffs affecting 50+ employees. If notice wasn't provided, you may be entitled to severance equal to 60 days of wages plus health insurance continuation costs, or back pay for the 'lost' notice period. This is separate from, and potentially in addition to, regular severance. Timing: you have typically 2-3 years to file a WARN Act claim. Action: (1) Consult an employment attorney immediately if WARN notice was not provided, (2) Document the layoff date and notice (or lack thereof), (3) Calculate 60 days of your regular pay and benefits costs, (4) An attorney can help you recover this amount via claim or lawsuit.
Should I take severance as a lump sum or installments?
This depends on your situation. Lump sum advantages: immediate access to full amount, simpler tax reporting, you control investment timing. Installment advantages: extended cash flow over weeks/months (reduces immediate budget shock), may reduce unemployment delays if installments stretch beyond severance period. Federal severance is typically paid in biweekly installments (matches standard payroll). Private sector may offer choice. If you have another job lined up, lump sum allows faster deployment to new employer's retirement plan (can delay taxes via rollover to IRA). If you're uncertain about next job, installments provide longer cash flow. Consult a financial advisor or tax professional for your specific situation.
Glossary
- Annual Basic Pay
Your base annual salary at the time of separation. For federal employees, includes locality pay, special rate supplements, standby duty premiums, and certain overtime. Excludes bonuses, commissions, incentive pay, and regular discretionary benefits unless specified in your severance agreement. Used as the foundation for calculating weekly pay rate.
- Age Adjustment Factor
A multiplier applied to federal employee severance that increases the payout for employees over 40 years old. Starts at 1.0 (under age 40) and increases by 2.5% for every three-month increment over 40, reaching a maximum of 3.5 at age 65+. Private sector severance typically does not include age factors unless negotiated.
- Biweekly Payment
Severance distributed in two-week increments, equaling the weekly pay rate multiplied by two. Most common payment structure for federal and many private sector severances, matching standard payroll cycles. Provides extended cash flow rather than lump-sum depletion.
- Creditable Service
Continuous employment with the same employer that counts toward severance calculation. For federal employees, service is creditable if unbroken by resignation or termination. Partial years are credited in quarter-year (25%) increments, so four months of service = one quarter-year increment.
- Involuntary Separation
Employment termination initiated by the employer, typically for business reasons (reduction in force, facility closure, workforce restructuring) rather than employee misconduct. Involuntary separations qualify for severance; terminations for cause do not.
- Reduction in Force (RIF)
Planned workforce reduction due to business needs, budget constraints, organizational restructuring, or operational changes. RIF is a common trigger for severance eligibility. Affects multiple employees simultaneously rather than individual performance-based terminations.
- Severance Cap
Maximum amount of severance payable under law or regulation. Federal employees have a 52-week cap (maximum 52 weeks of their weekly pay rate), meaning even with high age factors, severance cannot exceed one year's wages. Private sector severance typically has no statutory cap but may have company-specific limits.
- Supplemental Wages
Payments made separately from regular wages, such as severance, bonuses, commissions, and cash awards. IRS treats supplemental wages subject to flat 22% federal withholding (unless employee's W-4 indicates otherwise), which may differ from regular wage withholding rates.
- WARN Act
Worker Adjustment and Retraining Notification Act (29 U.S.C. 2101-2109). Requires employers with 50+ employees to provide 60 days advance written notice of mass layoffs (50+ employees at single site) or facility closings. Failure to provide notice entitles affected employees to severance equal to 60 days wages plus benefits costs.
- Weekly Pay Rate
Your annual base pay divided by 52 weeks. Forms the foundation of most severance calculations. Example: $78,000 annual salary ÷ 52 weeks = $1,500 per week. Used to multiply by service weeks to calculate basic severance amount.
- Tiered Severance Formula
A severance calculation method that rewards longevity by applying different rates to different tenure periods. Most common: 1 week of pay per year of service for the first 10 years, then 2 weeks of pay per year for any service beyond 10 years. Example: 15-year employee receives 10 weeks + (5 years × 2) = 20 weeks total.
- Federal OPM Formula
The statutory severance calculation for U.S. federal civil service employees, defined in 5 U.S.C. 5595 and 5 CFR 550, Subpart G. Calculates: weekly pay × service weeks × age adjustment factor (capped at 52 weeks). Most complex method because age factor can increase severance 1.0x to 3.5x depending on employee's age at separation.
- Effective Tax Rate
The actual percentage of severance going to taxes after accounting for federal income tax, Social Security, Medicare, and state/local taxes. Typically ranges 30-40% depending on income level and state of residence. Example: $50,000 severance with $18,000 in total taxes = 36% effective tax rate.
- Health Insurance COBRA
Consolidated Omnibus Budget Reconciliation Act. Allows employees to continue group health insurance coverage after employment ends, paying the full premium (employee + employer portions) plus 2% administrative fee. Typically available for 18 months after severance. Often offered as part of severance package (employer may subsidize).
Sources & references
- https://www.law.cornell.edu/uscode/text/5/5595
- https://www.ecfr.gov/current/title-5/part-550/subpart-G
- https://www.law.cornell.edu/uscode/text/29/2101
- https://www.irs.gov/publications/p15
- https://www.dhrm.virginia.gov/
- https://www.dol.gov/agencies/vets/WARN
- https://www.unemployment.org/
- https://www.opm.gov/
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Quality & oversight
- Last review
- Dec 6, 2025
- Model version
- v1.0
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