Illinois mitigation credits
A monthly snapshot of Illinois's mitigation banking market — wetland, stream credits — built on federal RIBITS bank, ledger, and service-area data.
Illinois mitigation supply loosens across wetland and stream credits
Both tracked credit types loosened over the trailing twelve months. Wetland credits show modest release volume against a small available balance. Stream credits dominate activity, with heavy releases and withdrawals relative to current availability.
Stream credits drive the market in Illinois. Despite large volumes moving through the stream segment, available inventory remains low. Wetland availability holds steady at a higher relative level with limited movement.
- Stream credits concentrate the bulk of release and withdrawal activity.
- Wetland supply loosens on modest releases and low withdrawals.
- Available stream inventory stays thin despite high throughput.
Generated from 1 data sources and reviewed before publication. Figures reflect the September 2026 lookback and are illustrative in this preview.
The market by credit type
Each credit type trades on its own supply-and-demand curve — figures are never summed across types. Availability is the current statewide balance; TTM = trailing twelve months.
| Credit type | Available | Released · TTM | Withdrawn · TTM | Trend |
|---|---|---|---|---|
| Wetland | 622 | 161 | 40 | Loosening |
| Stream | 4,869 | 58,575 | 11,436 | Loosening |
Activity over time
Quarterly releases and withdrawals, and the running available balance, for each credit type — the state-level view of what MitigationDesk shows on each bank profile. Trend runs 2024 Q2 → 2026 Q3.
Wetland
Stream
Largest transactions
The biggest credit releases and sales in September 2026, by credit type.
Largest releases · Wetland
| Bank | Sponsor | Released | Date |
|---|---|---|---|
| Donnelley Prairies and Oaks | 8 | Sep 17 | |
| Prairie Stream | 7 | Sep 1 |
Largest sales · Wetland
| Bank | Buyer / permittee | Sold | Date |
|---|---|---|---|
| School Springs | Forest preserve District of Dupage County | 1 | Sep 24 |
| School Springs | Thorn Grove Solar IL, LLC | 0 | Sep 8 |
| School Springs | Spencer Road Solar East, LLC | 0 | Sep 10 |
Aggregated from publicly disclosed RIBITS/DEQ ledger transactions for the period. Buyers are named where the transaction is a matter of public record.
How to buy mitigation credits in Illinois
If your project impacts a regulated resource in Illinois, you'll typically need to offset that impact by purchasing compensatory mitigation credits. Which bank you can buy from is determined by service area — a bank is generally approved to sell only to impacts inside its watershed (HUC), so geography comes first.
For federal Clean Water Act §404 impacts, wetland and stream credits are tracked in the U.S. Army Corps of Engineers' RIBITS system.
The practical steps: (1) confirm your impact type and quantity, (2) identify the HUC your impact falls in, (3) find banks whose service area covers that HUC with the right credit type available, and (4) contact the bank sponsor for a price and reservation. MitigationDesk collapses steps 2–4 into a single search.
See the banks that can service your project — with live availability, status, and the sales contact.
Find IL credits → How credit trading works →Illinois mitigation credits — FAQ
How many mitigation banks serve Illinois?
As of the latest snapshot, roughly 50 mitigation banks have service areas covering part of Illinois, spanning every status including ILF programs and inactive banks. Of those, 36 are approved and active.
What types of mitigation credits are available in Illinois?
Illinois banks offer wetland and stream credits. Each credit type trades on its own supply-and-demand curve and is never interchangeable with another — a stream credit can't offset a wetland impact.
Does Illinois have stream mitigation credits?
Yes. Illinois has mitigation banks offering stream credits. Availability is driven by service area, so which specific banks can serve a given project depends on the project's watershed (HUC).
Who regulates mitigation credits in Illinois?
Mitigation credits in Illinois (wetland and stream) are tracked by the U.S. Army Corps of Engineers through RIBITS (the Regulatory In-lieu fee and Bank Information Tracking System), which records every bank's ledger and service area.
How much do mitigation credits cost in Illinois?
Mitigation credit prices are not public and vary by credit type, local availability, and service area — a scarce credit type in a thinly-supplied watershed commands more than an abundant one. Prices come from the bank sponsor directly. MitigationDesk surfaces the sponsor and sales contact for every Illinois bank so you can request a quote.
See live availability for your project.
These pages summarize the market. The app shows you the specific banks that can service your site — with real-time balances, status, and the sales contact.