Oak Brook Terrace, IL per diem rates
Official FY2026 GSA per diem for Oak Brook Terrace (DuPage County), Illinois. Lodging is capped at $115.00 per night, and meals & incidentals are $80.00 per day ($60.00 on your first and last travel day).
Oak Brook Terrace rate table
| Months | Lodging (per night) |
|---|---|
| All year | $115.00 |
| M&IE (per day) | $80.00 · $60.00 first/last day |
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About Oak Brook Terrace per diem
Oak Brook Terrace's FY2026 lodging cap is $5.00 above the $110.00 standard CONUS rate that applies to most of the country, and its $80.00 M&IE rate is $12.00 above the $68.00 standard. GSA sets non-standard rates like this one after surveying actual lodging costs in the area, rather than applying a single nationwide figure — see how the standard rate compares to listed cities for the full mechanics.
Lodging here holds flat at $115.00 a night in every month of FY2026, so there's no seasonal adjustment to plan around. On your first and last travel day, M&IE drops to $60.00 under the 75% first/last-day rule — full days in between are paid at the full $80.00.
Frequently asked questions
What is the per diem rate for Oak Brook Terrace, IL?
For FY2026, Oak Brook Terrace has a GSA lodging rate of $115.00 per night and a meals & incidentals rate of $80.00 per day ($60.00 on the first and last travel day).
Does the Oak Brook Terrace per diem rate change by season?
No — Oak Brook Terrace has a flat lodging cap of $115.00 a night all year, so there is no seasonal adjustment to account for.
How does Oak Brook Terrace compare to the standard CONUS per diem rate?
The standard rate that applies to most of the US is $110.00 lodging + $68.00 M&IE. Oak Brook Terrace's peak lodging cap is $5.00 higher than standard, and its M&IE rate is $12.00 higher than standard — reflecting GSA's local cost-of-travel survey for this destination.
Rates from the GSA FY2026 dataset. PerDiemWise is an independent tool, not affiliated with the GSA.