Severance pay reduces your unemployment benefits dollar-for-dollar in Illinois

When you receive severance, the Illinois Department of Employment Security (IDES) counts it as income and reduces your weekly unemployment payment by the amount you receive each week. If your severance is $500 per week and your unemployment benefit would be $400 per week, you receive nothing that week. Once your severance runs out, you can resume collecting unemployment for the remaining weeks you're may have access to to.

The reduction happens because unemployment is designed to replace lost wages, not to stack on top of other income. IDES views severance as wages you're receiving from your former employer, even though you're no longer working there. You must report severance payments when you file your weekly unemployment claim, or IDES will discover the discrepancy later and ask you to repay benefits you shouldn't have received.

The timing of when you receive severance matters. If your employer pays it in a lump sum on your last day, IDES will prorate it across the weeks you would normally be unemployed. If they pay it in installments over several months, each payment reduces that week's benefit. Either way, the total reduction is the same — you lose one dollar of unemployment for every dollar of severance.

Key Takeaways

  • IDES reduces your weekly unemployment benefit by the exact amount of severance you receive that week, so severance and unemployment do not both pay in full at the same time.
  • You must report severance payments on your weekly claim form, or you may owe back the benefits IDES later determines you were not may have access to to receive.
  • Lump-sum severance is divided across multiple weeks by IDES, while installment payments reduce the specific weeks you receive them.
  • Once severance ends, you can resume collecting your full weekly unemployment benefit for any remaining weeks in your benefit year.
  • The reduction applies only to severance; other payments like accrued vacation or unused sick time may be treated differently depending on your employment contract.

How IDES calculates the reduction

IDES uses a straightforward formula: your weekly unemployment benefit minus your weekly severance equals what you receive that week. If the severance amount exceeds your weekly benefit, you get $0 for that week, but you do not lose the benefit entirely — it carries forward.

When severance is paid as a lump sum, IDES divides it by the number of weeks you would normally receive unemployment. For example, if you receive $10,000 in severance and are may have access to to 26 weeks of unemployment, IDES treats it as $385 per week in additional income. Each week, that $385 is subtracted from your benefit. This method is called "charging" the severance across your benefit period.

If your employer pays severance in installments — say, $1,000 every two weeks for five months — IDES reduces your benefit only during the weeks you actually receive those payments. You report the amount on your weekly claim, and the reduction applies that week only.

What you must report to IDES

When you file your weekly unemployment claim online or by phone, IDES asks whether you received any income during the week. Severance counts as income. You enter the gross amount (before taxes) that you received that week, and IDES automatically calculates the reduction.

If your severance is paid in a lump sum, you may receive a form from your employer documenting the amount and the date paid. Keep this form. When you file your first claim after receiving it, report the total severance amount. IDES will then determine how to prorate it across your remaining benefit weeks and adjust your payments accordingly.

Failing to report severance is a common mistake that leads to overpayment. If IDES discovers you received severance but did not report it, you will be asked to repay the unemployment benefits you received during weeks when your total income (severance plus unemployment) exceeded what you were may have access to to. This repayment can be substantial and may be deducted from future unemployment checks or pursued through other collection methods.

Severance versus vacation and sick time payouts

Severance and accrued vacation or sick time are not always treated the same way by IDES. The distinction depends on whether the payment is considered wages for time worked or a separation benefit.

If your employer pays out unused vacation or sick time as part of your final paycheck, IDES typically treats it as wages earned during your employment. This is reported on your final pay stub and may reduce your unemployment benefit during the week it is paid, similar to severance. However, some employers include vacation payout in the severance package itself, in which case it is all treated as severance.

The safest approach is to ask your employer for a written breakdown of your final payment: how much is severance, how much is vacation payout, and how much is sick time. Bring this to IDES when you file your first claim, or contact IDES directly before filing to confirm how they will treat each component. IDES staff can tell you whether a specific payment will reduce your benefit.

When severance ends and unemployment resumes

Once you stop receiving severance payments, your full weekly unemployment benefit resumes for any remaining weeks in your benefit year. Your benefit year runs for 52 weeks from the date you first filed your claim with IDES.

If severance payments end in week 10 of your benefit year and you were may have access to to 26 weeks of unemployment, you have 16 weeks remaining. Starting in week 11, you receive your full weekly benefit amount (assuming you continue to meet all other requirements: you are unemployed, you are actively searching for work, and you report your status each week).

You do not need to reapply or take any special action when severance ends. Simply continue filing your weekly claim as usual, and report that you received no severance income that week. IDES will automatically resume your full benefit payment.

How severance affects your total benefit amount

Severance does not reduce the total amount of unemployment you are may have access to to receive over your entire benefit year — it only delays when you receive it. If you are may have access to to $10,400 in total benefits (26 weeks at $400 per week) and receive $5,200 in severance, you will eventually receive the full $10,400, but some weeks will be $0 because severance covers those weeks instead.

This matters for your financial planning. If you budget assuming you will receive unemployment for 26 weeks, but severance covers the first 13 weeks, you actually have 26 weeks of income total — just compressed into a different timeline. Once severance ends, you have 13 weeks of unemployment remaining, not 26.

Some people mistakenly believe that receiving severance means they lose unemployment benefits entirely. That is not true in Illinois. Severance simply shifts when you receive the money; it does not eliminate your entitlement.

Taxes and severance reporting

Your employer will report severance on your final W-2 or on a separate 1099 form, depending on how it is classified. Severance is taxable income, and your employer may withhold federal and state income tax from the payment. IDES does not withhold taxes from unemployment benefits, but you may owe state and federal income tax on them when you file your tax return.

When you report severance to IDES, you report the gross amount (before taxes). IDES uses the gross amount to calculate the reduction to your unemployment benefit. The taxes withheld from your severance do not change this calculation.

Keep all documentation of severance payments and taxes withheld. You will need this information when you file your state and federal income tax returns. If you received unemployment benefits, you will also receive a 1099-G form from IDES showing the total unemployment paid to you during the year.

Frequently Asked Questions

Can I negotiate my severance to avoid losing unemployment benefits?

No. IDES will reduce your unemployment by the amount of severance regardless of how you structure the payment or what you call it. However, you can ask your employer to pay severance in installments rather than a lump sum, which spreads the reduction across more weeks and may allow you to receive some unemployment benefit each week instead of receiving nothing for several weeks.

What if I was laid off and received severance, but I'm also getting a pension or retirement payment?

Pensions and retirement payments are treated differently than severance. IDES does not reduce unemployment benefits based on pension income in most cases. However, if the pension is from your current or former employer and is considered deferred wages, it may be treated as severance. Contact IDES before filing your claim to confirm how your specific pension will be handled.

Do I lose unemployment if severance exceeds my weekly benefit amount?

You do not receive unemployment that week, but you do not lose the benefit. It carries forward. If your severance is $600 per week and your unemployment benefit is $400 per week, you receive $0 that week. The $400 benefit you did not receive is added to your remaining weeks, so you can collect it after severance ends.

What happens if my employer miscalculates severance or pays me the wrong amount?

Contact your employer immediately to correct the error. If you reported the incorrect amount to IDES and received unemployment you were not may have access to to, you may owe it back. If your employer underpaid you and you reported the lower amount, you can file an amended claim with IDES once the correct amount is paid. IDES can adjust your benefits retroactively.

Can I appeal if IDES reduces my unemployment because of severance?

You can appeal, but only if you believe IDES made an error in how it calculated the reduction or in how it classified your payment. If severance was correctly reported and correctly reduced your benefit, there is no grounds for appeal — that is how the law works in Illinois. If you disagree with how IDES classified a payment (for example, whether it is severance or vacation payout), you can request a hearing to present evidence.