Transferability turned US clean-energy tax credits into a traded asset class: under the IRA’s transfer rules, project credits sell for cash to corporate buyers, and a marketplace layer sprang up to price, diligence, and settle the trades — Crux alone tracked roughly $21 billion of transfers in the first half of 2026. For CFOs on either side, platform choice is now part of the capital stack. This guide compares the marketplaces and the surrounding machinery on identical criteria — as market structure, not tax advice.
Buyer-friendly packaging: Evergrow — credits productized for corporate buyers.
Deal-team DNA: Basis Climate — transfer execution with project-finance craft.
Advisory-grade process: Reunion — diligence-heavy transfers for serious buyers.
The traditional rails: banks, syndicators & advisors — tax equity’s incumbents adapting.
Free foundations: IRS/Treasury guidance & public market reports.
Scope: platforms and intermediaries for transferable clean-energy tax credits (ITC/PTC and adjacent) — marketplaces, diligence workflows, insurance integration, and settlement. The credits themselves, and the policy risk around them, are covered in our US incentives and project-finance articles; this is the transaction layer. Six entries, identical criteria; order follows market structure, not rank.
Criteria: role and model (marketplace, principal, advisor), diligence depth, insurance and risk handling, market data transparency, fee structure, and the main tradeoff. Fees are negotiated and quote-based across the category; public market statistics are cited where platforms publish them (checked October 7, 2026). Nothing here is tax, legal, or investment advice.
At a Glance
| Platform | Pricing | Best For | Link |
|---|---|---|---|
| Crux | Marketplace fees (quote-based) | Scaled transfers & market data | cruxclimate.com → |
| Evergrow | Transaction economics (quote-based) | Corporate buyers wanting simplicity | evergrow.com → |
| Basis Climate | Transaction fees (quote-based) | Developer-side execution craft | basisclimate.com → |
| Reunion | Advisory + platform (quote-based) | Diligence-heavy institutional buyers | reunioninfra.com → |
| Banks & syndicators | Structured fees | Tax equity & hybrid structures | traditional rails → |
| IRS guidance & public reports | Free | Rules, registration & market stats | irs.gov → |
Pricing checked October 7, 2026. Most platforms in this category sell quote-based enterprise plans; where we cite figures they come from vendor pages or published third-party comparisons and are order-of-magnitude indications, not offers. Billing basis (per user, per MW, per site) varies by vendor — confirm current terms directly before budgeting.
The Platforms in Detail
Crux
The market infrastructure play
Best for: sellers and buyers who want the deepest pool — and the market data everyone else quotes.
| Model | Marketplace and transaction platform; expanded into adjacent capital (debt marketplace launched) |
| Diligence depth | Standardized data rooms and process tooling across high deal volume |
| Insurance & risk | Tax-credit insurance integrated into deal flow as market practice |
| Market data | Publishes the market-intelligence reports the industry cites — ~$21B of H1 2026 transfers tracked |
| Fees | Transaction-based; quote-based. Checked October 7, 2026 |
| Main tradeoff | Scale strategy — the platform’s ambitions now extend well beyond your single trade |
- Liquidity begets liquidity: the deepest counterparty pool compresses both discounts and time-to-close — the two numbers a seller actually optimizes.
- Its public market reports are the category’s price transparency — read them before any negotiation, whichever platform you use.
- The debt-marketplace expansion signals the thesis: transferability as the wedge into a broader clean-energy capital-markets platform.
Evergrow
The buyer’s on-ramp
Best for: corporate tax teams that want credits with the complexity absorbed before it reaches them.
| Model | Buyer-centric packaging — sourcing, diligence, and structures designed for first-time and repeat corporate buyers |
| Diligence depth | Standardized packages with risk mitigation built in |
| Insurance & risk | Insurance-wrapped structures as a core feature, not an add-on |
| Market data | Deal-level transparency to participants |
| Fees | Embedded in transaction economics; quote-based. Checked October 7, 2026 |
| Main tradeoff | Convenience has a spread — sophisticated repeat buyers eventually price it |
- The corporate-buyer bottleneck is real: thousands of profitable companies could buy credits and don’t — packaging that converts them grows the whole market.
- Insurance-first structuring answers the tax director’s actual question — recapture and qualification risk — before it is asked.
- Natural first-trade venue: learn the asset class with training wheels, then graduate to marketplace-direct economics at volume.
Basis Climate
The execution shop
Best for: developers — especially mid-market — who want deal-team craft on the sell side of their transfer.
| Model | Transfer execution platform with project-finance DNA; strong on seller preparation |
| Diligence depth | Deal-document discipline — the data room built right the first time |
| Insurance & risk | Arranged per transaction as structures require |
| Market data | Transactional guidance grounded in closed deals |
| Fees | Transaction fees; quote-based. Checked October 7, 2026 |
| Main tradeoff | Boutique depth over marketplace breadth |
- Mid-market sellers are the underserved side: smaller credits need proportionate process, and that is the explicit design point here.
- Seller preparation is where discounts are won — a clean qualification file and complete data room prices better than any negotiation tactic.
- Project-finance craft matters when credits interact with debt and tax equity already in the stack — which is most real projects.
Reunion
The institutional process
Best for: large buyers and their advisors who treat credit purchases like the investment-committee decisions they are.
| Model | Advisory-grade transfer platform — diligence depth and repeat institutional-buyer programs |
| Diligence depth | The emphasis: structured risk assessment, documentation, and post-close monitoring |
| Insurance & risk | Structured into programs for recurring buyers |
| Market data | Buyer-education and market guides among the category’s most-read |
| Fees | Advisory and platform fees; quote-based. Checked October 7, 2026 |
| Main tradeoff | Process weight — built for eight-figure programs, heavy for one-off trades |
- Repeat-buyer programs are the institutional future of the demand side — annual credit purchasing as a standing treasury strategy, not an opportunistic trade.
- Diligence depth compounds for buyers: the second purchase through a structured program costs a fraction of the first.
- Its public buyer guides double as the category’s best free education — useful regardless of venue.
Banks, syndicators & advisors
The traditional rails
Best for: sponsors whose capital stacks still want tax equity, hybrids, or a trusted intermediary’s balance sheet.
| Model | Tax-equity partnerships, hybrid transfer structures, syndication desks, Big-4 and boutique advisory |
| Diligence depth | The original standard — transferability’s processes largely descend from it |
| Insurance & risk | Mature integration with the tax-insurance market |
| Market data | Private — relationship-priced |
| Fees | Structured fees and spreads; negotiated. Checked October 7, 2026 |
| Main tradeoff | Cost and access — the machinery that excluded mid-market sellers is why platforms exist |
- Tax equity did not die; it hybridized — partnership structures now routinely sell transferable credits out the back, mixing depreciation value with transfer liquidity.
- For complex assets (storage ITC nuances, prevailing-wage documentation), incumbent deal teams carry judgment platforms are still encoding.
- The strategic read: platforms commoditize the simple middle of the market, pushing incumbents up-complexity — sellers should price both routes.
IRS guidance & public reports
The free foundations
Best for: every participant — the rules, registration machinery, and market statistics are public.
| Model | Treasury/IRS transferability rules and the pre-filing registration portal; platform-published market reports |
| Diligence depth | The primary sources every deal document ultimately cites |
| Insurance & risk | Guidance defines the recapture and penalty landscape being insured |
| Market data | Crux-class reports and trade coverage give free pricing context |
| Fees | Free. Checked October 7, 2026 |
| Main tradeoff | Rules, not judgment — and the policy layer can move (see our incentives coverage) |
- Registration is mechanical but unforgiving — the portal process belongs on project timelines the way interconnection milestones do.
- Free market reports mean no participant should enter negotiations without a current view of discount ranges by credit type and size.
- Policy risk is the asset class’s tail: transferability’s own statutory future is a live political question — priced in tenors, worth watching in our US incentives article.
A Capital Market Born From a Tax Code Paragraph
Transferability’s section of the IRA did something rare: it created a standardized, repeatable financial product overnight, and the market structure followed textbook form — marketplaces for liquidity, packagers for the demand side, boutiques for execution craft, incumbents hybridizing upward. Volume scaling into the tens of billions within three years (the ~$21B H1 2026 figure extends the curve) validated the infrastructure bet the platforms made.
The strategic tension is permanence: a market this young, built on one statute, carries policy tail-risk that its own participants openly analyze. For sellers that argues for speed and clean execution over exotic structuring; for buyers, for insurance-wrapped discipline; for both, for watching the legislative weather our US incentives article tracks — because in this category, Washington is a counterparty.
Working the Spread: What Actually Prices a Credit
Published ranges cluster transfer discounts by a handful of drivers: credit type and vintage, deal size, seller credit quality, insurance presence, documentation completeness, and timing within the tax year. Every one of those except type and vintage is partly controllable — which is the practical case for platforms and preparation: the spread between a messy and a clean transfer routinely exceeds every fee in the transaction.
The CFO’s sequencing: qualification evidence assembled early (prevailing wage and apprenticeship files above all — the same documentation discipline our O&M and construction guides preach), registration on the project timeline, insurance priced in parallel, and venue chosen by size and sophistication — marketplace depth for the middle, packaging for first-time buyers, deal teams for complexity. Credits are earned by projects but monetized by paperwork.
Kurums Match: Which One Fits You?
Pick the statement that sounds most like your situation.
We’re a developer with credits to sell this tax year.
Marketplace depth (Crux-class) for price discovery, execution support (Basis-class) if your team is thin — and start the qualification file and registration now; timing pressure is the seller’s worst discount driver.
We’re a profitable corporate considering our first credit purchase.
Packaged, insurance-wrapped routes (Evergrow-class) minimize first-trade risk; read the free buyer guides (Reunion-class) and current market reports first so the convenience spread is a choice, not an accident.
We’re an institution building a repeat buying program.
Structured programs (Reunion-class) with standing diligence beat serial one-offs; negotiate program economics against marketplace-direct pricing annually — the market is young and spreads move.
Our capital stack already has tax equity in it.
You are in hybrid territory — the traditional rails plus transfer liquidity out the back. Model both structures with advisors; our US project-finance article covers the stack this transaction layer plugs into.
Frequently Asked Questions
How is this different from your US incentives and project finance articles?
Those cover the credits themselves — eligibility, adders, policy direction — and the capital stacks around them. This guide covers the transaction layer that converts earned credits into cash, which only exists because of the rules those articles explain.
What discount should a seller expect?
Ranges move with credit type, size, seller quality, insurance, and timing — which is why current platform market reports (free) beat any static figure. The controllable truth: preparation quality moves the price more than venue choice does.
Is tax-credit insurance necessary?
It has become standard market practice on transfers of size — covering qualification and recapture risks — and often improves net pricing by more than its premium. Structure and necessity are deal-specific: advisor territory, not a checkbox.
What happens to this market if transferability is repealed?
Openly debated within the market itself — existing-credit grandfathering, platform pivots toward adjacent capital products (already visible), and a partial return to tax-equity structures are the discussed scenarios. It is the category’s defining tail risk; track it through our US incentives coverage.
Related Comparisons & Guides
- US clean energy tax credits & incentives
- US renewable project finance explained
- Renewable energy insurance & risk analytics
- PPA price benchmark platforms compared
- Carbon accounting software compared
Last updated: October 7, 2026 · Reviewed by the Kurums Startup editorial team.
Disclosure: Kurums currently has no affiliate, sponsorship, or partnership relationship with any product compared on this page. If that changes, this page will say so here and affected links will carry sponsored attributes.
Part of the Kurums Renewable Energy hub — country strategies, permitting, incentives, financing, and tools across nine markets.
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