What is a tax credit transfer agreement?

A tax credit transfer agreement (TCTA) is the contract that obligates a seller to sell, and a buyer to buy, federal clean energy tax credits for cash under Section 6418. Also called a tax credit purchase agreement or purchase and sale agreement, it sets the price, closing conditions, risk allocation and post-closing duties.

A TCTA replaces the partnership a traditional tax equity deal would need, as Reunion explains. The buyer gets no ownership or control of the project. That's why the document matters so much: the buyer's only protection is what the contract says, and the seller's future exposure is set there too. For the underlying law, see our Section 6418 guide, and for the bigger picture, can you sell tax credits.

What are the key terms in a tax credit transfer agreement?

The key TCTA terms are price and volume, seller representations, closing conditions, covenants, indemnity, credit support, control of IRS contests and termination. Price gets the attention, but indemnity and credit support usually decide what the deal really costs a seller, because they set who pays if a credit is later reduced.

Here's what each clause does:

• Price and volume: cents per $1.00 of credit, a maximum amount, the buyer's pro rata share and sometimes different prices by credit year.

• Closing conditions: evidence the project is placed in service, IRS registration, and for ITCs a cost segregation report and sometimes an appraisal.

• Covenants: before closing, protect the credit's value. After closing, file returns properly, avoid recapture events and make any wage cure payments.

• Tax contests: who controls an IRS proceeding, and who only gets to participate.

• Transaction costs: who pays for lawyers and advisors, which Crux says sellers typically cover up to a negotiated cap.

• Termination: an outside date, if signing and closing aren't simultaneous.

Is there a standard tax credit transfer agreement form?

Yes, for investment tax credits. The American Clean Power Association and industry partners released a standardized TCTA form meant to lower barriers, cut transaction costs and shorten timelines, especially for first-time buyers and smaller sellers. It's a starting point for negotiation, not a finished contract, and templates for other credits are expected.

ACP says its goal is broad adoption along the lines of the ISDA framework used for derivatives, and that experts expect similar templates for 45Y and 45X credits. Until those arrive, production credit deals are drafted around the different risk profile, since they carry no Section 50 recapture. Have your own tax counsel review any form before you rely on it.

What's the difference between a spot and a forward TCTA?

A spot TCTA covers credits that already exist and can sign and close at once, with payment at closing. A forward TCTA covers credits a project will generate later, so it signs now and closes once conditions are met. Forward deals give a developer earlier certainty, usually in exchange for a larger discount.

The regulations allow this structure. Under 26 CFR 1.6418-1(f), a buyer's advance commitment to purchase counts, as long as cash in U.S. dollars is paid between the first day of the seller's tax year when the credit is determined and the transfer election statement due date.

Crux found forward commitments made up 20% of 2024 deal volume, and more than 30% of closed deals in the fourth quarter included one. Buyers willing to commit to future years can often get a larger discount, so price a forward deal against what certainty is worth to your lenders.

What does the seller represent in a transfer agreement?

The seller represents that it owns the project, the project qualifies, it's eligible to claim and transfer the credit, and the credit hasn't already been sold, carried back or carried forward. It also covers placed-in-service or generation facts, bonus adders and prevailing wage and apprenticeship compliance, then repeats these statements at closing.

Read those representations closely, since a breach typically feeds straight into the indemnity. The closing "bring down" repeats them, so a change between signing and closing matters. Foreign entity rules are the newest pressure point: Crux reported credits subject to those rules priced about $0.015 lower for ITCs and $0.02 for PTCs in H1 2026. Expect a buyer to ask for specific comfort on FEOC status.

Who pays if the IRS disallows or recaptures a transferred credit?

By law, the buyer usually pays first, because it claimed the credit. By contract, the seller almost always reimburses the buyer through an indemnity that can include interest, penalties and a tax gross-up. So a seller keeps the economic risk after the sale, often for years, unless insurance or a negotiated cap limits it.

There are two main risks:

• Disallowance: 26 CFR 1.6418-5 raises the buyer's tax by the excess plus 20%. Reasonable cause, shown largely through the buyer's diligence, waives only the 20%.

• Recapture: for ITCs, a sale, foreclosure or casualty within five years triggers recapture that steps down 100%, 80%, 60%, 40% and 20%. The seller must notify the buyer in time for the buyer to compute it.

Indemnity payments are generally taxable to the buyer, so contracts add a gross-up, which makes a claim larger than the credit lost. Model yours below.

Do you need a parent guarantee or tax credit insurance?

Usually you need one or the other, because the selling entity often has few assets of its own. Crux found 55.3% of 2024 deals used a parent indemnity rather than full or partial insurance. Stronger sponsors tend to guarantee, while others insure, typically paying 2% to 5% of the insured limit.

The seller is the first regarded owner of the project, often a thinly capitalized partnership, so buyers want a creditworthy backstop and audited financials. A guarantee should last through the five-year recapture period and the audit window, which typically runs three years, according to Reunion.

Insurance has real costs and limits:

• Premium: Crux has reported 1.5% to 3.0% of the deal above $10 million and 2.0% to 5.0% below it. Reunion now sees $0.03 to $0.05 per $1.00 of credit.

• Coverage: usually 90% to 140% of credit value, per Crux.

• Size: Reunion says policies can be hard to get under $3 million to $5 million.

See our guide to tax credit insurance for how policies work.

What does the IRS require in a transfer agreement?

The IRS doesn't regulate the TCTA itself, but it does require a transfer election statement with both parties' tax returns. A purchase and sale agreement can serve as that statement if it holds the required details, is labeled "Transfer Election Statement," is signed under penalties of perjury and includes the buyer's written consent.

That rule comes from 26 CFR 1.6418-2(b)(5). The deal must also meet the core Section 6418 rules: cash only, an unrelated buyer, one transfer only and an irrevocable election. The seller needs an IRS registration number for each credit property, so most agreements make registration a closing condition.

What should a seller negotiate in a TCTA?

Sellers should focus on the indemnity cap, survival period, gross-up, who controls an IRS contest, and the conditions that let a buyer walk away. Price is easy to compare across bids, but these terms decide your real exposure. Bring in tax counsel early, and settle insurance at the term sheet stage.

Timing helps here. Crux's sample transaction phase runs five to 11 weeks, including one to three weeks on the term sheet and two to six on diligence and the agreement. Agree on the big risk terms in the term sheet, because they're harder to reopen once lawyers are drafting. Insurance can take several weeks to bind, so build that into the schedule. Buyers can review our purchase checklist for their side of the table.

Sources

• Cornell Legal Information Institute, 26 CFR § 1.6418-1, Definitions

• Cornell Legal Information Institute, 26 CFR § 1.6418-2, Rules for making transfer elections

• Cornell Legal Information Institute, 26 CFR § 1.6418-5, Special rules

• American Clean Power Association, Investment Tax Credit Transfer Agreement Form

• Reunion, Common Terms and Negotiating Points in a Tax Credit Transfer Agreement

• Reunion, Transferable Tax Credits Comprehensive Guide

• Crux, Transferable tax credits: The complete 2026 guide

• Crux, The state of clean energy finance in H1 2026

• Crux, 6 takeaways from the 2024 transferable tax credit market

• Crux, 4 ways developers can prepare to sell smaller tax credits