The Illinois Department of Revenue (IDOR) recently released a statement reminding folks who've spotted a hiccup in their state tax returns that correcting the record is both their responsibility and in their interest. "It's not uncommon for taxpayers to spot an error after they've filed their returns," IDOR Director David Harris said in a statement. "Amending a return is a straightforward way to make it right and ensures taxpayers are paying exactly what they owe—or getting the refunds they're due," as stated by the State of Illinois.
To clarify, taxpayers should use Form IL-1040-X to file an amended individual income tax return. If the amendment stems from a federal adjustment, wait until the IRS finalizes the change before submitting it to the Illinois Department of Revenue (IDOR), along with any required supporting documents. Be sure to clearly explain the reason for the amendment in Step 11, Line D—unclear explanations can delay processing. For joint returns, both spouses must sign the form. You can file electronically or mail a paper copy. Note: there's no need to file an amended return for simple updates like a name or address change—those can be handled through MyTax Illinois or by mail.
"If a taxpayer finds a mistake, it's best to correct it without delay," stressed Director Harris. Delaying can mean unnecessary penalties and interest racking up if you owe more than you initially figured. And if you're on the receiving end of the deal, a prompt amended return means you'll see your refund sooner rather than later. For a full guide on what to do, detailed instructions are available on the IDOR website. Additional help is a phone call away with two different numbers to choose from—1-800-732-8866 or 217-782-3336.
