Washington mitigation credits
A monthly snapshot of Washington's mitigation banking market — wetland, species credits — built on federal RIBITS bank, ledger, and service-area data.
Washington wetland supply tightens while species credits hold steady
Washington wetland credits tightened over the trailing twelve months. Withdrawals outpaced releases, drawing down an already large available inventory. Supply remains concentrated in wetland credits, which dominate the state market.
Species credits were stable across the period. No releases or withdrawals occurred, and available inventory stayed thin. Activity remains minimal for this credit type.
- Wetland credits are tightening as withdrawals exceed releases.
- Species credits are stable with no recorded movement.
- Available supply is concentrated in wetland credits.
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| Credit type | Available | Released · TTM | Withdrawn · TTM | Trend |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 | 51,827 | 21 | 25 | Tightening |
| Species | 1,198 | 0 | 0 | Stable |
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
Species
Largest transactions
The biggest credit releases and sales in September 2026, by credit type.
Largest releases · Wetland
| Bank | Sponsor | Released | Date |
|---|---|---|---|
| Lummi Nation Wetland and Habitat Bank | 1 | Sep 21 |
Largest sales · Wetland
| Bank | Buyer / permittee | Sold | Date |
|---|---|---|---|
| East Fork Lewis Mitigation Bank | Legacy Trails III LLC | 1 | Sep 3 |
| East Fork Lewis Mitigation Bank | Theodore Walrath | 1 | Sep 1 |
| East Fork Lewis Mitigation Bank | Caleb Bergmann | 0 | Sep 1 |
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 Washington
If your project impacts a regulated resource in Washington, 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 WA credits → How credit trading works →Washington mitigation credits — FAQ
How many mitigation banks serve Washington?
As of the latest snapshot, roughly 45 mitigation banks have service areas covering part of Washington, spanning every status including ILF programs and inactive banks. Of those, 36 are approved and active.
What types of mitigation credits are available in Washington?
Washington banks offer wetland and species credits. Each credit type trades on its own supply-and-demand curve and is never interchangeable with another.
Does Washington have species mitigation credits?
Yes. Washington has mitigation banks offering species 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 Washington?
Mitigation credits in Washington (wetland and species) 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 Washington?
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 Washington 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.