How Severance Pay Is Calculated

A severance pay offer arrives as a gross number attached to a stack of paperwork, usually on a day when nobody is doing their sharpest arithmetic. Understanding how the figure was built makes it much easier to judge — and to see which parts are negotiable.

The first thing worth stating plainly: no federal law requires severance pay in the United States. It exists because a policy, a contract, a collective agreement or a negotiated exit provides it. That cuts both ways. Nothing entitles you to an offer, and equally nothing fixes the one you receive — a figure produced by a formula is not a figure produced by law.

How severance pay is calculated

Most US policies pay weeks of salary per year of service:

weekly pay      = annual salary ÷ 52
weeks earned    = years of service × weeks per year
weeks paid      = min(weeks earned, policy cap)
severance gross = weeks paid × weekly pay

Someone on $90,000 with six years of service, at two weeks per year, earns 12 weeks — about $20,769 gross. Add 80 hours of unused PTO at roughly $43.27 an hour and the package is $24,231 before tax.

One to two weeks per year is the common range. Caps of 12 to 26 weeks are usual and matter most to long-tenured staff: a twenty-year employee under a twelve-week cap loses 28 earned weeks. The severance calculator shows exactly how much the cap removes, which is a useful thing to have in front of you in a conversation.

Why the deposit is smaller than the offer

Severance is supplemental wages. Employers typically withhold at a flat federal supplemental rate rather than at the rate implied by your W-4, then add state withholding, Social Security and Medicare on top.

The important point: this is withholding, not your final tax bill. If your actual effective rate for the year turns out lower — quite likely if you are out of work for part of it — the excess comes back when you file. It is a cash-flow problem, not a permanent loss.

The same mechanism applies to bonuses, and the bonus tax calculator covers it. For ordinary paycheck deductions by state, the take-home pay calculator gives the comparison figure.

The PTO payout is a state-law question

Whether unused vacation must be paid out at separation is one of the few parts of this governed by law rather than policy. Several states treat accrued vacation as earned wages that must be paid and prohibit forfeiture clauses. Others let a written policy decide.

Because it turns on your state and your policy language together, check your state labor department rather than relying on a colleague's experience elsewhere. On a large accrued balance the difference runs to thousands of dollars.

Knowing your balance in advance helps. The PTO accrual calculator projects what it will be on a given date, and how PTO accrual works explains the caps that quietly stop you earning.

Runway is the number that matters

The gross figure is less useful than the answer to "how long does this last?"

Calculate it against expenses, not salary. The emergency fund calculator produces a monthly cost figure; severance plus savings divided by that is your real runway, and it is usually shorter than the "months of pay" framing suggests, because that framing uses gross salary rather than what you actually spend.

Two things move the number:

• Unemployment benefits may be available, but several states reduce or delay them while severance is being paid, and the rules differ enough that it is worth checking your state specifically rather than assuming either way.
• Health coverage is a real and often shocking monthly cost once employer coverage ends. Continuation coverage is priced at the full unsubsidised premium, and marketplace plans may be cheaper — losing job-based coverage generally opens a special enrolment window worth comparing during.

What is negotiable

More than people assume. The first offer is frequently not the last, and the cash figure is only one lever:

• Weeks of pay, particularly if the formula was applied mechanically to an unusual situation.
• Equity treatment — unvested shares and accelerated vesting can dwarf the cash component.
• A pro-rated bonus for the portion of the year worked.
• Continued benefits for a defined period, which is sometimes easier for an employer to agree than more cash.
• The reference and the departure narrative, which cost nothing and matter for a long time.
• Payment timing, which can straddle tax years.
• Non-compete or non-solicit terms, which may be narrowed.

Before you sign

Severance is nearly always conditioned on signing a release of claims — you give up the right to sue in exchange for the money. That is a legal document, and it is exactly the situation where an hour of an employment lawyer's time is cheap relative to what is at stake.

Workers over 40 are generally entitled to a statutory period to consider such an agreement and a window to revoke after signing. There is rarely a good reason to sign in the room, and an employer pressing for an immediate signature is itself information.

Read the whole document rather than the number on the first page. The terms that cause problems later are rarely in the payment clause — they are in the confidentiality, non-disparagement and non-compete sections, and in whatever the agreement says about references and rehire eligibility. Those cost the employer nothing to soften and can matter to you for years.

None of this is legal advice. For the federal position, the Department of Labor states directly that severance pay is a matter of agreement between employer and employee, and the WARN Act covers the separate question of advance notice for large layoffs.