Illinois Per Diem Rates (FY2026)
Illinois has 5 GSA non-standard per diem areas for FY2026. Everywhere else uses the standard $178/day rate ($110 lodging + $68 M&IE).
| Area | M&IE / day | Lodging / night |
|---|---|---|
| Bolingbrook / Romeoville / LemontWill | $74 | $114 |
| ChicagoCook / Lake | $92 | $142–$234 |
| East St. Louis / O'Fallon / Fairview HeightsSt. Clair | $86 | $150 |
| Oak Brook TerraceDuPage | $80 | $115 |
| Standard Rate | $68 | $110 |
| All other Illinois locationsstandard rate | $68 | $110 |
Illinois per diem FAQ
- What is the per diem rate in Illinois?
- Illinois has 5 GSA non-standard per diem areas with their own rates for FY2026. Everywhere else in Illinois uses the standard CONUS rate of $178 per day — $110 for lodging plus $68 for meals & incidental expenses (M&IE).