Illinois Crypto Tax: The Flat Rate and Who Can Help

Short answer: Illinois taxes crypto gains and crypto income at its flat individual rate of 4.95 percent of net income. The IL-1040 starts from your federal adjusted gross income, so the same reconciled crypto figures drive both returns. Get the federal numbers right and the Illinois return follows.

Illinois is one of the simpler states for crypto. There is no separate crypto rule, no special rate for long-term gains and no state form that lists your trades. What Illinois does is take the income figure from your federal return and tax it at one rate. That makes the federal reconciliation the whole job: every sale, swap, spend and reward has to be priced and matched to its cost basis before either return can be finished.

This guide is for an Illinois resident, or someone moving into or out of the state, who wants to know what Illinois adds to their crypto taxes and who should help. I am Chris Herbst, founder of CountDeFi. We are US crypto tax accountants: we reconcile crypto histories and produce the reports a client's own CPA or preparer files from. We are not a CPA firm and we do not file returns. I am a Chartered Business Accountant in Practice (CBAP) with the Chartered Institute for Business Accountants and a General Tax Practitioner (GTP) with the South African Institute of Taxation.

How Does Illinois Tax Crypto Gains and Crypto Income?

Illinois taxes crypto through its ordinary individual income tax. Gains and crypto income are part of your federal adjusted gross income, and that figure is where the Illinois return begins.

What rate does Illinois charge on crypto?

The Illinois Department of Revenue lists the individual income tax rate as Effective July 1, 2017: 4.95 percent of net income. The 2025 IL-1040 instructions repeat it: The Illinois income tax rate is 4.95 percent. One rate applies to all of your net income, whatever its source.

Does Illinois tax long-term crypto gains at a lower rate?

No. Because Illinois applies a single rate to net income, a gain on bitcoin held for five years and a gain on a token held for five days are taxed at the same state rate. The holding period still matters federally, where long-term gains can qualify for lower rates, so it still has to be tracked correctly.

Where does crypto enter the IL-1040?

On Line 1. The instructions say: Enter the adjusted gross income from your federal return. Your crypto gains, losses and income are already inside that number, which is why Illinois does not ask you to list crypto transactions separately. Schedule M then adds or subtracts any Illinois-specific items, none of which is a crypto adjustment for most people.

Federal and Illinois Crypto Tax Side by Side

The table sets out what each return does with the same crypto activity.

The practical consequence is that there is one set of crypto figures, not two. An Illinois return built on a wrong federal reconciliation carries the same error at 4.95 percent.

Staking, Mining and Other Crypto Income on the IL-1040

Crypto income is taxed federally when you receive it, and it reaches Illinois the same way your gains do: through adjusted gross income.

Are staking rewards taxed in Illinois?

Yes, through the federal figure. Under Rev. Rul. 2023-14 the fair market value of staking rewards is included in gross income in the taxable year in which the taxpayer gains dominion and control over the validation rewards. That amount sits in federal adjusted gross income, and Illinois taxes it at the flat rate. When you later sell those rewards, the value you reported as income is your cost basis, so recording it once and correctly matters on both returns.

What about crypto earned through work or a business?

Crypto received for services is income at its value in US dollars when received. The IRS says the fair market value of virtual currency received for services performed as an independent contractor constitutes self-employment income and is subject to the self-employment tax. Mining run as a business falls on Schedule C federally. Illinois again takes the result through adjusted gross income.

Does Illinois treat airdrops or hard forks differently?

Illinois has no separate crypto rule for them, so the federal treatment carries through. Whether a particular airdrop is income, and when, is a federal question, and it is worth settling before the state return is prepared.

Crypto Losses, Due Dates and Extensions in Illinois

Losses and deadlines also follow the federal pattern, with a few Illinois details worth knowing.

Do crypto losses reduce Illinois tax?

They reduce it to the extent they reduce your federal adjusted gross income. Federally, if capital losses exceed gains, the excess you can claim is the lesser of $3,000 ($1,500 if married filing separately) or your total net loss, with the rest carried forward. Illinois starts from the federal figure after that limit.

When is the Illinois return due?

For the 2025 tax year, the instructions state that The due date to file and pay for 2025 is April 15, 2026. Illinois grants an automatic six-month extension of time to file, and the instructions give The extended due date to file is October 15, 2026. The extension is for filing, not for paying: tax owed is due by the original date.

Is there an Illinois exemption allowance?

Yes. The instructions state that The personal exemption amount for tax year 2025 is $2,850, subject to the income limits set out in the instructions. It reduces the income the 4.95 percent rate applies to.

Moving Into or Out of Illinois With Crypto

A move changes which state taxes which part of the year, and crypto sales are dated to the second, so the timing of a disposal against the move date matters.

What is Schedule NR?

It is the schedule part-year residents and nonresidents use to work out the Illinois share of their income. The instructions say a part-year resident must file Form IL-1040 and Schedule NR, Nonresident and Part-Year Resident Computation of Illinois Tax in the circumstances they describe. A crypto sale made while you lived in Illinois belongs on the Illinois side of that computation.

What if another state also taxed the same gain?

Illinois residents may be able to claim a credit on Schedule CR. The instructions describe Schedule CR, Credit for Tax Paid to Other States, and its own instructions set out who qualifies. Your preparer decides whether it applies; your crypto records show which state each sale belongs to.

Choosing Crypto Tax Help as an Illinois Resident

Most of the crypto work is federal and can be done by a specialist anywhere in the US. The return itself can be signed by a local CPA, an enrolled agent or another preparer.

Does an Illinois resident need an Illinois-based crypto accountant?

No. The reconciliation, which is most of the cost and most of the risk, is the same wherever you live. Many Illinois residents pair a crypto specialist for the figures with a local preparer who knows the IL-1040 and signs both returns. Our guide on whether location matters for a crypto tax accountant covers that choice in more detail.

How do you check an Illinois CPA licence?

In Illinois, CPAs are certified by the Illinois Board of Examiners and licensed by the state regulator. The Board's page on The CPA License explains that the licence is issued by the Illinois Department of Financial and Professional Regulation. Use the IDFPR Check a License service before you engage anyone who calls themselves a CPA.

Who can represent you if the IRS writes?

The IRS states that Enrolled agents, certified public accountants, and attorneys have unlimited representation rights before the IRS. A reconciliation firm prepares the figures and the evidence behind them; one of those three represents you. Our comparison of a crypto CPA and a crypto tax accountant explains how the two roles divide the work.

What separates a crypto specialist from a general preparer?

A general preparer works from the forms you bring. A crypto specialist builds those forms: matching transfers between your own wallets, rebuilding missing cost basis, classifying DeFi activity and producing a Form 8949 that ties to what your wallets hold. Ask any candidate how they handle a transfer between your own wallets and a sale with no recorded purchase; the answer tells you which one you are talking to.

Records an Illinois Crypto Investor Should Gather

The IRS sets the standard for crypto records, and Illinois works from the federal return those records support.

What records does the IRS expect for crypto?

The IRS virtual currency FAQ says taxpayers must maintain records that are sufficient to establish the positions taken on tax returns, including records of receipts, sales, exchanges and the fair market value of the currency. On retention, the IRS guidance is to Keep records for 3 years in the ordinary case, with longer periods in the situations it lists.

What should be on your list before the first call?

• Every exchange account you have used, open or closed, with its CSV or API export.
• Every self-custody wallet address, on every chain.
• Any broker forms received, such as a Form 1099-DA, 1099-B or 1099-MISC.
• Prior-year returns that reported crypto, so the new figures continue from them.
• Notes on transfers between your own accounts, and on any lost, stolen or hacked funds.
• Any IRS or Illinois Department of Revenue letter you have received.

Missing purchase records are the most common gap. Our guide to fixing missing cost basis explains how they are traced.

Where CountDeFi Fits for Illinois Clients

We do the reconciliation, not the filing. We import every exchange, wallet and chain, match transfers between your own accounts, fix missing cost basis, price every leg, and produce the reports a CPA or preparer files from. For an Illinois resident those reports feed the federal return, and the IL-1040 follows from it. Our guide to crypto tax reports for your CPA shows what the hand-off looks like, and the crypto tax accounting service page explains how an engagement runs. If you are comparing states, see our guides to Texas crypto tax and California crypto tax.