Calculators for Illinois investors
Four tools that build Illinois and Chicago specifics into the math. Each sits on the guide that explains its method, and each opens with a worked example you can edit. Inputs stay in your browser.
CalculatorTransfer tax calculatorState, Cook County and Chicago taxes on one sale or both sides of a flip.CalculatorFlip deal analyzerProfit, cash needed and sensitivity with Illinois closing taxes built in.CalculatorChicago permit-path timerHow long each permit path has taken this year, and what the wait costs.CalculatorDSCR & refi calculatorWill the refinance clear the lender’s DSCR at Cook County tax levels?
How the calculators are checked
The calculation code is shared between the pages and an automated test suite. Before each release, the suite reproduces every worked example on the site to the cent: a $425,000 Chicago sale carries $5,100.00 in transfer tax, and the example flip shows a $33,687.50 profit. Rates come from the Illinois statutes and Chicago Municipal Code sections named under each tool.