Northern Illinois's tuition & fees has increased from $23,760 (2015) to $13,060 (2025), and the rate of tuition increase is 45.03% over the past 10 years. The graduate school tuition & fees has raised from $20,538 (year 2015) to $9,176 (year 2025).
Northern Illinois's tuition increase rate is lower than the Illinois's average increase rate of -3.38%. Compare to all colleges in United States, it's increase rate is lower than the average increase rate of 10.99%.
Cost of Attendance (COA) Trends
The total cost of attendance (COA), including tuition & fees, books & supplies costs, and living costs, increased by -19.95% from 2015 ($38,530).
For the current academic year 2024-2025, Northern Illinois's COA is $30,842, which is increased by 4.07% from last year.
The following table and chart show changes to Northern Illinois's COA over the past 10 years.
Tuition & Fees Changes
The tuition & fees have decreased 45.03% for the last 10 years , and the 2025 tuition & fees are $10,232. The following table and chart show the tuition & fees changes at Northern Illinois University over last the 10 years.
Books & Supplies Costs Changes
The cost of purchasing books & supplies which are required/recommended for courses $1,200, and it has decreased -7.69% from the year 2015 to 2025.
| Year | Books & Supplies | Change by Year |
| 2015-16 | $1,300 | - |
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| 2016-17 | $1,400 | 7.69% |
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| 2017-18 | $1,400 | |
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| 2018-19 | $1,400 | |
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| 2019-20 | $1,400 | |
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| 2020-21 | $1,300 | -7.14% |
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| 2021-22 | $1,300 | |
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| 2022-23 | $1,300 | |
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| 2023-24 | $1,300 | |
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| 2024-25 | $1,200 | -7.69% |
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Living Costs Changes
The living costs including room, board, and other living expenses have increased 25.74% when a student lives on-campus facilities and 23.76% when living-off campus from the year 2015 to 2025. The following table shows the changes in living costs at Northern Illinois University.
| Year | Living On Campus | Living Off Campus | Change by Year |
| 2015-16 | $13,470 | $13,470 | - |
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| 2016-17 | $13,360 | $13,360 | -0.82% |
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| 2017-18 | $13,098 | $13,098 | -1.96% |
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| 2018-19 | $13,100 | $13,100 | 0.02% |
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| 2019-20 | $12,970 | $12,970 | -0.99% |
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| 2020-21 | $13,750 | $13,750 | 6.01% |
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| 2021-22 | $13,440 | $13,440 | -2.25% |
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| 2022-23 | $13,860 | $13,860 | 3.13% |
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| 2023-24 | $15,636 | $15,636 | 12.81% |
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| 2024-25 | $16,582 | $16,322 | 6.05% |
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Compare Tuition Change to Similar Colleges
The following table compares 2025 tuition and increase rate from last year between Northern Illinois University and similar schools.
| 2025 | 2024 | Increase Rate |
| Northern Illinois University | $13,060 ($13,060) | $12,506 ($12,506) | 4.43% |
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| University of Akron Main Campus | $20,815 ($13,135) | $17,239 ($12,799) | 20.74% |
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| Bowling Green State University-Main Campus | $21,900 ($13,912) | $21,378 ($13,390) | 2.44% |
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| Ohio University-Main Campus | $24,838 ($14,158) | $24,114 ($13,746) | 3.00% |
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| Miami University-Oxford | $38,965 ($17,519) | $38,124 ($17,060) | 2.21% |
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| Kent State University at Kent | $21,575 ($12,920) | $20,880 ($11,767) | 3.33% |
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