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104TH GENERAL ASSEMBLY
State of Illinois
2025 and 2026
HB1827

Introduced 1/29/2025, by Rep. William "Will" Davis

SYNOPSIS AS INTRODUCED:

35 ILCS 200/Art. 9 Div. 6 heading new
35 ILCS 200/9-280 new
35 ILCS 200/9-281 new

Amends the Property Tax Code. Provides that, in counties with
3,000,000 or more inhabitants, taxpayers of income-producing property
shall submit income and expense data annually to the chief county
assessment officer on or before July 1 of each year. Provides that, in
counties of fewer than 3,000,000 inhabitants, the county board may provide
by ordinance or resolution that taxpayers of income-producing property
shall submit income and expense data annually to the chief county
assessment officer on or before March 31 of each year. Contains certain
exceptions. Effective immediately.
LRB104 03520 HLH 13543 b

A BILL FOR

HB1827
LRB104 03520 HLH 13543 b
1

AN ACT concerning revenue.

2

Be it enacted by the People of the State of Illinois,
3
represented in the General Assembly:

4

Section 5.
The Property Tax Code is amended by adding
5
Division 6 to Article 9 as follows:

6

(35 ILCS 200/Art. 9 Div. 6 heading new)
7
Division 6.

Income-Producing Property

8

(35 ILCS 200/9-280 new)
9

Sec. 9-280.
Definitions.
As used in this Division 6:
10

"Expenses" means expenditures necessitated by the
11
operation of the real property itself that reduce the income
12
to the property owner or lessee. "Expenses" includes
13
management fees, reserves for replacement, maintenance,
14
property taxes, and insurance. "Expenses" does not include
15
debt service, reserves for building additions, or income tax.

16

"Income" means real property revenue that is directed to
17
or received by the property owner in the form of rent from
18
unrelated persons or entities and ancillary revenue to the
19
owner from unrelated persons or entities that is generated
20
exclusively from the operation of the real property itself,
21
such as revenue from parking or other amenities provided to or
22
for the benefit of the property's tenants. "Income" does not

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1
include revenue generated from personal property, including
2
but not limited to, revenue from a business enterprise that is
3
operated on the real property or improvements made to the
4
property by a tenant.

5

"Income and expense data" means data that identifies
6
income and expenses as defined in this Section. Income and
7
expense data may be found in annual reports, income and
8
expense statements, and Internal Revenue Service Schedule E or
9
Schedule 8825 tax forms for income-producing property for the
10
immediately preceding year. "Income and expense data" also
11
includes data from rent rolls for the current and immediately
12
preceding year. Income and expense data may be based on a
13
calendar or fiscal year.

14

"Income-producing property" means property that is not
15
owner-occupied, as defined in this Section, and is owned for
16
the purpose of generating income from the property itself,
17
whether or not such property actually generates income in a
18
particular year. "Income-producing property" does not include:

19

(1) property with a market value of $500,000 or less
20

in the most recent assessment year for which an assessment
21

is certified exclusive of any adjustments to assessed
22

value by a board of review, the Property Tax Appeal Board,
23

or the circuit court;

24

(2) residential property containing 6 or fewer
25

dwelling units;

26

(3) property assessed under Article 10 of this Code

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and stadiums that are not qualified property under Section
2

10-215 that have a seating capacity of 20,000 or more and
3

host major professional sporting events;

4

(4) property that is assessed by the Department under
5

Article 11 of this Code;

6

(5) property that is owned or leased by a hospital
7

licensed under the Hospital Licensing Act or operated
8

under the University of Illinois Hospital Act, including
9

any hospital affiliate that directly or indirectly
10

controls, is controlled by, or is under common control
11

with a hospital; or

12

(6) property that is owned or leased by a facility
13

licensed under the Nursing Home Care Act that is an
14

intermediate or skilled facility.

15

"Net rentable area" means the square footage of an
16
improvement that may be leased or rented to tenants and
17
excludes common areas, such as elevators, stairways, and
18
atriums.

19

"Owner-occupied" means real property that is used or
20
occupied exclusively by a record owner or related entity or
21
real property where 80% or more of the net rentable area of the
22
property is occupied or held for future use by the record owner
23
of the property or a related person or entity as described in
24
subsection (b) of Section 267 of the Internal Revenue Code. If
25
more than 20% of the net rentable area of a property is subject
26
to an existing lease or is subject to short term rental of the

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LRB104 03520 HLH 13543 b
1
property by an unrelated entity, the property is not
2
considered owner-occupied for purposes of this Division.

3

"Property" has the meaning set forth in Section 1-130 of
4
this Code and includes contiguous parcels or property index
5
numbers that comprise one functional property location.

6

"Taxpayer" means the record owner of income-producing
7
property. The owner or lessee, whoever is contractually
8
obligated to pay property taxes directly to the county
9
treasurer, shall be required under this Article to submit
10
income and expense data that is within its possession and
11
control to the chief county assessment officer for the
12
relevant portion of the property over which it exercises
13
control.

14

15

(35 ILCS 200/9-281 new)
16

Sec. 9-281.
Income-producing properties.
17

(a) In counties with 3,000,000 or more inhabitants,
18
taxpayers or lessees who are contractually obligated to pay
19
property taxes of income-producing property shall submit
20
income and expense data annually to the chief county
21
assessment officer on or before July 1 of each year, except as
22
otherwise provided in this Division. In the first year
23
following the effective date of this amendatory Act of the
24
104th General Assembly, income and expense data shall be
25
submitted by September 1. If a taxpayer or party who is

HB1827
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LRB104 03520 HLH 13543 b
1
contractually obligated to pay property taxes is required to
2
submit income and expense data under this Article in
3
accordance with Section 9-280, the chief county assessment
4
officer shall notify, by certified mail, the record owner of
5
income-producing property at least 60 days prior to the date
6
for submission of the obligation to submit income and expense
7
data. Notice shall include the deadline for submission. If an
8
owner of record claims that another party is obligated to pay
9
property taxes directly to the county treasurer for all or a
10
portion of the property, then the owner shall send to the
11
obligated party a copy of the notice received from the chief
12
county assessment officer of the obligation to submit income
13
and expense data. The taxpayer or obligated party shall submit
14
income and expense data to the chief county assessment officer
15
in accordance with this Section for the relevant portion of
16
the property for which the taxpayer or obligated party is
17
required to pay the property taxes and exercises control over
18
such property, identified by parcel and area.

19

The chief county assessment officer may extend the time
20
within which taxpayers are required to submit income and
21
expense data under this Section.
22

If the taxpayer's books and records reflecting the
23
operation of the property are maintained on a calendar year
24
basis, the statement of income and expense data shall be for
25
the last full calendar year preceding the date that the
26
statement is submitted. If the taxpayer's books and records

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LRB104 03520 HLH 13543 b
1
reflecting the operation of the property are maintained on a
2
fiscal year basis for federal income tax purposes, the
3
statement of income and expense data shall be the last full
4
fiscal year preceding the date when the statement is
5
submitted.

6

The taxpayer or obligated party shall certify under oath
7
in a signed attestation that the statements set forth in
8
income and expense data submitted under this Article are true,
9
accurate, and complete to the best of his or her knowledge
10
except as to matters stated to be upon information and belief
11
and, as to such matters, the taxpayer or obligated party shall
12
certify that he or she believes the same to be true, accurate,
13
and complete.

14

(b) In counties of fewer than 3,000,000 inhabitants, the
15
county board may provide by ordinance or resolution that
16
taxpayers of income-producing property shall submit income and
17
expense data annually to the chief county assessment officer
18
on or before March 31 of each year. If a taxpayer or party who
19
is contractually obligated to pay taxes is required to submit
20
income and expense data under this Article, the chief county
21
assessment officer shall notify the taxpayer of that fact by
22
certified mail within 60 days of the due date for income and
23
expense data. Notice shall include the deadline for such
24
submission. If an owner of record claims that another party is
25
obligated to pay property taxes directly to the county
26
treasurer, then the owner shall send to the obligated party a

HB1827
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LRB104 03520 HLH 13543 b
1
copy of any notice received from the chief county assessment
2
officer of the obligation to submit income and expense data.
3
The taxpayer or obligated party shall submit income and
4
expense data to the chief county assessment officer in
5
accordance with this Division for the relevant portion of the
6
property for which the taxpayer or obligated party is required
7
to pay the property taxes and exercises control over such
8
property, identified by parcel and area.

9

The chief county assessment officer may extend the time
10
within which taxpayers are required to submit income and
11
expense data under this Section.

12

If the taxpayer's books and records reflecting the
13
operation of the property are maintained on a calendar year
14
basis, the statement of income and expense data shall be for
15
the last full calendar year preceding the date that the
16
statement is submitted. If the taxpayer's books and records
17
reflecting the operation of the property are maintained on a
18
fiscal year basis for federal income tax purposes, the
19
statement of income and expense data shall be the last full
20
fiscal year preceding the date when the statement is
21
submitted.

22

The taxpayer or obligated party shall certify under oath
23
in a signed attestation that the statements set forth in
24
income and expense data submitted under this Article are true,
25
accurate, and complete, to the best of his or her knowledge
26
except as to matters stated to be upon information and belief

HB1827
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LRB104 03520 HLH 13543 b
1
and, as to such matters, the taxpayer or obligated party shall
2
certify that he or she believes the same to be true, accurate,
3
and complete.

4

Subsections (c) through (i) of this Section shall also
5
apply in counties that have adopted by ordinance or resolution
6
the requirements of this Section.

7

(c) The chief county assessment officer of a county that
8
is subject to this Section shall establish rules that specify
9
the manner of submission of income and expense data and
10
provide for the administration of the provisions of this
11
Section in the county. Income and expense data shall be
12
submitted in electronic form unless waived by the chief county
13
assessment officer.

14

The chief county assessment officer shall maintain a copy
15
of its rules for public review and shall place a copy of those
16
rules and any amended rules on his or her website.

17

(d) If a taxpayer or obligated party fails to submit
18
income and expense data as required under this Section or as
19
required after the adoption of a county board ordinance or
20
resolution under this Section, within the time prescribed, or
21
within an extended period as permitted by the chief county
22
assessment officer, the assessor shall send notice by
23
certified mail to such taxpayer of the failure to comply. If
24
the taxpayer or obligated party fails to submit the required
25
data within 60 days after such notice is sent, fails to provide
26
documentation of another taxpayer's obligation to submit

HB1827
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1
income and expense data, or fails to adequately explain why no
2
submission is required, the taxpayer or obligated party shall
3
pay a penalty to the chief county assessment officer of 0.025%
4
of the prior year's market value as indicated by the most
5
recent certified assessed value for the property at issue, but
6
in no case shall the taxpayer or obligated party be required to
7
pay more than its proportional share of a maximum penalty of
8
$10,000 per property. A taxpayer or obligated party who fails
9
to submit income and expense data in accordance with this
10
provision shall only be required to pay a penalty on the
11
portion of the property's value for which the taxpayer or
12
obligated party is required to pay taxes.

13

A taxpayer or obligated party may contest the penalty and
14
requirement to report income and expense data in a particular
15
year and submit evidence to the chief county assessment
16
officer in support of a contention that the taxpayer or
17
obligated party was not required to submit income and expense
18
data, that another party was required to submit income and
19
expense data for such property, or that the submission of
20
income and expense data complies with this requirement based
21
on available documentation. The chief county assessment
22
officer shall review the taxpayer or obligated party's
23
submission and other submissions for the property for the tax
24
year at issue, and determine whether the taxpayer or obligated
25
party provided sufficient evidence that he or she was not
26
required to report income and expense data or that the

HB1827
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LRB104 03520 HLH 13543 b
1
submission complies based on available documentation.

2

If a taxpayer or obligated party is dissatisfied with a
3
decision of the chief county assessment officer of the
4
requirement to submit income and expense data, the taxpayer or
5
obligated party may request review of that decision. Upon such
6
request, at least 30 days' notice shall be provided to the
7
taxpayer or obligated party of a hearing to be conducted by a
8
hearing officer designated by the chief county assessment
9
officer. If dissatisfied with a hearing officer's decision,
10
the taxpayer or obligated party may appeal such decision to
11
the circuit court of the county where the property is located
12
as a final administrative decision under the Administrative
13
Review Law. If a party is unsuccessful at the hearing, the
14
penalty imposed under this Section shall bear interest at
15
0.05% per month thereafter, beginning 21 days after the date
16
of decision, or 21 days after the date of the issuance of a
17
final decision on administrative review.

18

The State's Attorney of the county in which the property
19
is located shall have power to act on behalf of the People and
20
the chief county assessment officer to enforce the provisions
21
of this Section, including the power to compel by subpoena the
22
production of taxpayer income and expense data that is
23
required to be produced under this Section.

24

The chief county assessment officer may audit the income
25
and expense data submitted by taxpayers to verify its accuracy
26
by requesting documentation in support of submissions.

HB1827
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LRB104 03520 HLH 13543 b
1

(e) Penalty and interest collected by the chief county
2
assessment officer under this Section for a taxpayer's or
3
obligated party's failure to timely submit income and expense
4
data shall be collected in the same manner as other fees
5
collected by the chief county assessment officer. Such revenue
6
shall be deposited with the county treasurer in the county
7
general fund of the county in which the property is located,
8
with 75% of the revenue to be used for the benefit of the
9
office of the chief county assessment officer and 25% to be
10
used for the benefit of the county.

11

(f) Any personal data such as federal identification or
12
social security numbers and income tax forms or data that are
13
included in income and expense data produced under this
14
Section shall be deemed private information and exempt from
15
disclosure under the Freedom of Information Act. Income and
16
expense data submitted pursuant to this Article shall not be
17
subject to disclosure by the chief county assessment officer
18
in accordance with the Freedom of Information Act and other
19
applicable law, or pursuant to court order in a tax or other
20
matter. Nothing in this Section prohibits a chief county
21
assessment officer from disclosing compiled and anonymized
22
income and expense data as provided in this Section.

23

(g) The income and expense data submitted pursuant to this
24
Section shall be processed and used as follows:

25

(1) Income and expense data in its original form in
26

which the taxpayer, obligated party and the property in

HB1827
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LRB104 03520 HLH 13543 b
1

question is identified shall not be used for purposes of
2

assessing individual properties. The chief county
3

assessment officer shall compile and anonymize income and
4

expense data that is collected under this Division and
5

shall cause such information to be published annually.
6

Compiled and anonymized data may be used in the mass
7

appraisal or assessment of property.

8

The chief county assessment officer shall cause the
9

income and expense data to be compiled and anonymized in
10

accordance with statistical disclosure controls accepted
11

in the field that account for control of microdata and
12

quantitative and frequency tables in a manner that
13

considers individual property characteristics but prevents
14

the disclosure of individual property identity. Such
15

compilation and anonymization shall be performed by staff
16

who are not directly involved in the valuation of the type
17

of property for which the data has been submitted. The
18

chief county assessment officer shall publish the
19

procedures followed in compiling and anonymizing data.

20

(2) If a particular property is so unique in
21

characteristics, features, or location that the property
22

or its owner could be identified if the property's income
23

and expense data are included in compiled and anonymized
24

data that is made available to the public, township
25

assessors, or boards of review under this Section, the
26

income and expense data for that particular property shall

HB1827
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LRB104 03520 HLH 13543 b
1

not be included in compiled and anonymized data.

2

(3) Notwithstanding any other provision of this
3

Section, the taxpayer or obligated party of any property
4

for which income and expense data has been submitted shall
5

have the right at all times to: (i) obtain a copy of such
6

income and expense data as submitted, in its original
7

form, from the chief county assessment officer; (ii) file
8

such income and expense data in any public forum; or (iii)
9

authorize such filing or publication of the income and
10

expense data in any other manner that the owner may
11

choose.

12

The chief county assessment officer shall establish
13

and maintain reasonable security measures consistent with
14

State and local law and the Federal Information Security
15

Management Act to protect income and expense data.

16

(h) All information received by the chief county
17
assessment officer from income and expense data filed under
18
this Article shall be used only for official purposes. Any
19
person who divulges income and expense data submitted under
20
this Article other than as permitted in this Article, in
21
accordance with a proper judicial order, or as otherwise
22
provided by law, shall be guilty of a Class B misdemeanor and
23
subject to a fine not to exceed $7,500.

24

(i) The chief county assessment officer shall prepare a
25
summary report within 60 days of the completion of the first
26
assessment cycle in which income expense data is compiled

HB1827
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LRB104 03520 HLH 13543 b
1
under this Section and used in the assessment process, and
2
report findings to the Revenue committees of the Illinois
3
Senate and House of Representatives within 45 days thereafter.
4
The report shall document income and expense data collection,
5
changes in assessed or equalized assessed values that followed
6
the collection and use of compiled and anonymized income and
7
expense data for properties subject to reassessment, shall
8
compare reassessment year assessed or equalized assessed
9
values with values or equalized assessed values from the
10
immediately preceding reassessment cycle. The report shall
11
document any shifts in the percentage of commercial or
12
residential properties that comprise a portion of the total
13
assessed value or equalized assessed value of property within
14
the county. This report shall be produced annually following
15
the effective date of this amendatory Act of the 104th General
16
Assembly until all property located within a county subject to
17
this Section has been reassessed.

18

Section 99.
Effective date.
This Act takes effect upon
19
becoming law.

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