A 1031 exchange is the single most powerful tax tool available to apartment owners — done right, it lets you sell a building and defer 100% of the tax you'd otherwise owe by reinvesting into another property. Done wrong, you miss a deadline and owe all of it anyway. Here's how it works for Illinois multifamily owners, in plain English.
What is a 1031 exchange?
Named after Section 1031 of the tax code, a like-kind exchange lets you sell an investment property and reinvest the proceeds into another investment property without paying capital gains tax at the time of sale. You're not avoiding the tax forever — you're deferring it, and many owners defer indefinitely by exchanging again and again. For a building with years of appreciation and depreciation recapture built up, that deferral can be worth six figures.
The 45-day and 180-day clock
Two deadlines start the day your sale closes, and they run at the same time:
- ✓45 days to identify your replacement property (or properties) in writing.
- ✓180 days to close on the replacement.
- ✓Both are calendar days, with no extensions for weekends or holidays.
This is why we tell sellers to plan the exchange before listing. If you sell first and start hunting on day one of the 45, you're negotiating from weakness. If you know the replacement market going in, the clock is a formality.
The Qualified Intermediary — why you can't touch the money
You cannot take possession of the sale proceeds, even for a day, or the exchange is dead. A Qualified Intermediary (QI) holds the funds between the sale and the purchase and handles the paperwork. Choosing an experienced QI matters; we connect our clients with intermediaries we've closed with before.
What counts as "like-kind" for apartments?
For real estate, like-kind is broad: you can exchange an apartment building for almost any other investment real estate — a bigger building, a different market, a retail strip, even a fractional interest in a larger asset. Common moves for Illinois owners include trading a management-heavy value-add for a stabilized building, or trading up from a fourplex into a 20-unit. If you're on the buying side of that trade, buyer representation gets you access to off-market replacements that fit the clock.
Illinois-specific notes
Illinois conforms to the federal 1031 rules, so a properly structured exchange defers Illinois tax as well. You can also exchange across state lines — many of our clients roll Chicagoland equity into higher-yield buildings in Indiana, Iowa, or Ohio — but state filing and withholding rules vary, so loop in your CPA early.
The exchange isn't the hard part. Lining up the right replacement inside 45 days is. That's a sourcing problem, and it's exactly what a broker is for.
A simplified example
Say you sell a building for a $500,000 gain. Between federal capital gains, depreciation recapture, and Illinois tax, you might owe well over $100,000. In a 1031, you reinvest the full proceeds into a replacement, defer that entire bill, and keep it working for you as equity in a larger asset. *(Illustrative only — run your actual numbers with your CPA and QI.)*
Frequently Asked Questions
Can I 1031 into a property in another state?
Yes. Real estate anywhere in the U.S. is like-kind to other U.S. investment real estate, so you can exchange a Chicago building into Indiana, Iowa, Ohio, or elsewhere. Mind each state's filing and withholding rules.
What happens if I miss the 45-day deadline?
The exchange fails and the sale becomes fully taxable. There are no extensions except in limited federally declared disaster situations. This is why identifying replacements early is critical.
Can I exchange a small building into a bigger one?
Absolutely — trading up is one of the most common and powerful uses of a 1031. You can also reinvest into multiple replacement properties, within the identification rules.
Do I owe Illinois tax if I do a 1031?
A properly structured 1031 defers Illinois tax along with the federal tax. The deferred tax comes due only when you eventually sell without exchanging.
Thinking through a sale-and-exchange? Contact our team or call (630) 895-7989 and we'll map the sequence with you — and start lining up replacement inventory before your clock ever starts.