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Español · Rental law by city · Where we cover

Illinois · Security deposit

Do I get interest on my deposit in Illinois?

Yes, big landlords must pay you interest.

Why, and the exact law

It applies if they hold your deposit 6 months or more in buildings with 25+ units.

Depends on the number of units.

From Illinois Security Deposit Interest Act, read Oct 6, 2026.
Show the law

“State law requires your landlord to pay you interest on your security deposit if it is held for at least six months and there are at least 25 units in your building or complex …”

Illinois Security Deposit Interest Act · illinoisattorneygeneral.gov

Moved out? Count the days

In Illinois the landlord has 45 days to return it.

Who can help

  1. Get free legal helpThey can help you ask for it, or go to small claims court.Illinois Legal Aid Online
Every rule here, word for word (2)

This page covers state law only. Cities with their own rules have their own pages.

Illinois lawDepends on the building

Security deposit interest

Do I get interest on my deposit?

Yes, big landlords must pay you interest.

It applies if they hold your deposit 6 months or more in buildings with 25+ units.

Depends on the number of units.

Who it covers

  • Buildings with 25 or more units.
The law, word for word

“State law requires your landlord to pay you interest on your security deposit if it is held for at least six months and there are at least 25 units in your building or complex …”

Illinois Security Deposit Interest Act · illinoisattorneygeneral.gov · Retrieved Oct 6, 2026

Illinois lawDepends on the building

Security Deposit Return Act

When do I get my deposit back?

Within 45 days after you move out, in buildings with 5 or more units.

If the landlord keeps any of it, you get an itemized list with paid receipts within 30 days.

Depends on the number of units.

Who it covers

  • Buildings with 5 or more units.
The law, word for word

“The Illinois Security Deposit Return Act requires your landlord to return your security deposit in full within 45 days of the date you moved, if:”

Illinois Security Deposit Return Act · illinoisattorneygeneral.gov · Retrieved Oct 6, 2026

More about Illinois

Rental law by cityWhat's changing in Illinois

Information about the law, not legal advice.