1099 vs W-2 in Illinois (2026)

Federal gap (same math, every state)

Worked offer: $95,000 salary, $9,000 employer health, 4% match, 30 billable hours per week, 46 billable weeks — the same example as the national 1099 vs W-2 calculator.

• Employer FICA on the W-2: $7,268
• True W-2 cost (salary + employer FICA + health + match): $115,068 (1.21× the headline salary)
• Break-even 1099 rate: $83/hr on 1,380 billable hours
• SE tax if you billed that gross as profit with no expenses: about $16,259 (15.3% × 92.35%; real contractors deduct expenses first)

PTO is already inside the salary. Counting it again as extra dollars is the usual error; unpaid time off is captured by billing 46 weeks instead of 52.

Illinois 1099-K: $1,000 and four transactions

Illinois is one of nine jurisdictions that require 1099-K reporting far below the federal $20,000 / 200-transaction test. The Illinois rule in PiggyMath’s checker is over $1,000 and four or more transactions. You can receive an Illinois information return when a neighbor in Indiana would not.

That form does not create extra tax. It tells IDOR (and often you) about gross platform payments. Deduct fees on Schedule C. The vs calculator still prices SE tax vs employer FICA at a 4.95% state rate on both sides.

The 1099-NEC federal threshold is $2,000 for 2026. A Chicago client who pays you $1,500 may issue nothing federally and you still owe federal SE tax plus 4.95% Illinois on the profit. Bookkeeping matters more when fewer forms arrive.

State 1099-K: over $1,000 and 4+ transactions (from PiggyMath FORM1099K). Federal remains $20,000 and 200 transactions. Check it with the 1099-K threshold checker (state pre-selected when Illinois has a special rule).

Source note: Illinois flat individual income tax 4.95%.

State % to type into the vs calculator

The vs tool applies one flat % to W-2 wages and to 1099 gross so the compare stays symmetric. For Illinois we suggest 4.95% as a planning figure at a ~$95,000 income — derived from STATE_RATES_2026 (flat / exact), except Ohio W-2 which uses the hub’s ~2.75% individual rate rather than the BID. Open 1099 vs W-2 with Illinois filled in.

QBI (20% of qualified business income, with 2026 thresholds) only exists on the 1099 side and is not in the simple vs rate. Use the all-in-one estimator when QBI or locals decide the offer.

Classification is not a calculator output

Whether a role may be 1099 is a legal test (federal common-law plus any state overlay). PiggyMath prices the tax difference if you are paid as a contractor. It does not decide worker status, issue Form SS-8, or e-file.

Expenses, QBI, and the Illinois line

The break-even rate above assumes the contractor bills $115,068 with $0 expenses and no QBI. Real 1099 work deducts software, home office, mileage, and health insurance (the self-employed health insurance deduction). Those cut SE tax and federal income tax; Illinois may or may not conform. PiggyMath’s state model does not apply a full Illinois return — it applies STATE_RATES_2026 (flat / exact) to a profit proxy.

QBI can drop federal income tax by up to 20% of qualified profit below the 2026 thresholds. It does not reduce SE tax. It does not automatically reduce Illinois tax. Price QBI in the QBI calculator and the estimator set to IL, not as a haircut to the vs tool’s hourly rate.

1099-NEC $2,000 vs what Illinois still taxes

For 2026 a client generally issues Form 1099-NEC only above $2,000. A Illinois client who pays you $1,500 may send nothing. You still have federal SE tax on the profit ($212 at $1,500 with no expenses) and, unless Illinois has no personal income tax, a state line on that same profit. The 1099-K rule for this state: State 1099-K: over $1,000 and 4+ transactions (from PiggyMath FORM1099K). Federal remains $20,000 and 200 transactions.

Keep invoices even when no form arrives. Illinois Department of Revenue can still ask how you computed the number on the return. PiggyMath does not e-file and does not store your inputs.

Frequently asked questions