IL HB4290

Requires property tax bills to include new information: percentage change from prior year, previous year's equalized assessed value and tax amount, and dollar amounts attributable to ballot initiatives/referendums with their expiration dates

Mandates each tax bill contain a QR code linking to county assessor contact information, 5-year tax bill history for the property, and budget/levy ordinances for all taxing districts where the property is located

Creates a Property Taxpayer's Bill of Rights guaranteeing taxpayers the right to clear tax bills, Truth in Taxation notices, assessment appeals, access to budget documents, attendance at levy hearings, TIF information, and communication with local leaders

Beginning in levy year 2027, taxing districts that adopt levies exceeding 105% of the prior year's aggregate levy must send written notice to all property owners within 60 days, including the percentage increase and how each board member voted

The required notice for levy increases must include in 14-point font: "YOUR LOCAL TAXING DISTRICT HAS VOTED TO INCREASE YOUR PROPERTY TAXES"