Tools · Security Deposit
Illinois Security Deposit Calculator (2026)
Enter your rent and move-out date to see the most a Illinois landlord can charge and the exact date your deposit is due back — no statutory cap here, returned 45 days to return; 30 days to itemize after the tenant vacates.
Illinois security deposit calculator
These are the Illinois figures applied to what you entered — a plain summary of the rule and the dates, not a determination that anyone did or did not comply.
- Maximum deposit
- No statutory cap
- Monthly rent
- $2,000
- Move-out date
- Not entered
- Return deadline (45 days to return; 30 days to itemize)
- 45 days to return; 30 days to itemize
Plain-language summary, not legal advice.
Informational only, not legal advice. Security-deposit rules carry exceptions (lease type, small landlords, city ordinances) this summary cannot weigh. See the full statute and exceptions on the Illinois security deposit reference, cited to 765 ILCS 710/1; 765 ILCS 715.
How Illinois security deposits work
Illinois recently widened its deposit protections to everyone. Until 2024, the itemization and return rules only applied to buildings with five or more units — but a January 1, 2024 amendment repealed that threshold, so now every landlord must itemize within 30 days and return the balance within 45. There's no statewide cap on the amount, and interest is owed only in large 25-plus-unit buildings. One big caveat: Chicago and Cook County layer on much stricter rules, so a city address changes the analysis entirely.
This calculator shows the Illinois figures applied to your own rent and dates. It is informational only and not legal advice — exceptions this summary cannot weigh may apply. For the full rules, penalties, and citations, see the Illinois security deposit reference.
Security deposit calculators for other states
Same tool, each with its own cap and return deadline.