By state
Illinois per diem rates (FY2026)
Illinois has 4 cities with their own GSA rate. Everywhere else in the state uses the standard rate.
Standard rate (everywhere not listed): $110.00 lodging + $68.00 M&IE per day ($51.00 first/last day).
| City / county | Lodging | M&IE |
|---|---|---|
| Bolingbrook / Romeoville / Lemont · Will | $114.00 | $74.00 |
| Chicago · Cook / Lake | $142.00–$234.00 | $92.00 |
| East St. Louis / O'Fallon / Fairview Heights · St. Clair | $150.00 | $86.00 |
| Oak Brook Terrace · DuPage | $115.00 | $80.00 |