Own Real Estate in a C-Corporation With a Big Tax Year? How §6418 Credits Cut the Bill

The Real-Estate C-Corp Problem

A lot of valuable real estate sits inside C-corporations for a simple reason: that's how it was done decades ago. Before pass-through structures became standard, families and closely-held businesses put buildings into C-corps and left them there. Moving the property out now would trigger tax, so it stays.

The catch is that a C-corporation pays federal income tax at the entity level. In a strong year — a big rental season, a refinancing that frees up income, and especially the sale of an appreciated building— the company faces a federal tax bill it can see coming from months away. Depreciation recapture on a sale can make it worse. The owners know the number is large, and they usually assume there's nothing to do but write the check.

There is one tool most real-estate C-corp owners have never been shown, and it was written by Congress specifically for companies with exactly this profile.

What Section 6418 Lets Your Company Do

Since 2022, the Inflation Reduction Act has allowed C-corporations to purchase federal clean energy tax credits directly from the developers who earn them, and apply those credits dollar-for-dollar against federal income tax. Under Section 6418, the transfer is a cash purchase — no ownership of a solar farm or battery project, no partnership, no long-term commitment.

The mechanics are simple enough to explain in a sitting:

It is a legal transaction with a financial payoff — not a financial product. Every piece is documented: IRS registration of the credit, a Tax Credit Transfer Agreement, diligence on the underlying project, and, in the mid-market, tax credit insurance.

Why a Real-Estate C-Corp Is an Unusually Good Buyer

Not every company uses purchased credits equally well. A closely-held real-estate C-corporation is close to the ideal case:

• Entity-level federal tax. The C-corp pays federal income tax directly, so a purchased credit offsets that liability at the entity — no pass-through to owners required.
• A predictable, often visible bill. A building sale or a strong rental year produces a tax number the owners can see in advance and size a credit purchase against.
• Below CAMT. These companies are nowhere near the billion-dollar financial-statement-income thresholds that blunt the benefit for the largest corporate buyers — which is exactly why the transferable-credit market has shifted toward closely-held C-corps.

The Tax-Year Events That Make This Worth a Call

You don't need an exotic situation. The credit fits a handful of events that are common for real-estate C-corps:

• The sale of an appreciated building — gain recognized at the corporate level, often with depreciation recapture layered on top.
• A strong net rental-income year — full occupancy, rent escalations, or a refinancing that leaves the company with more taxable income than usual.
• A liquidity or asset-sale event — the real estate is sold as part of a larger transaction, concentrating gain into one year.
• A one-time cleanup — reorganizing or winding down a legacy holding structure and recognizing built-in gain.

The common thread is a large, predictable federal income tax bill at the entity level. Where that exists, a §6418 purchase belongs on the table next to the usual planning.

The Limits a Careful Owner Should Know

Anyone who tells you purchased credits have “no limits” is selling, not advising. The credits are powerful, but they live inside the ordinary rules for general business credits:

• The §38 liability limit.A general business credit can offset 100% of the first $25,000 of net regular tax and 75% of net regular tax above that — it doesn't erase an unlimited liability in a single year.
• Carryback and carryforward. Excess credit carries back one year and forward up to 22 years, so credits can be matched to the highest-liability years.
• Recapture. If the underlying project is sold or stops qualifying within five years, a portion of the credit can be recaptured. Seller indemnity, a reliance opinion, and tax credit insurance are the standard tools that shift this risk away from the buyer.

What the Process Actually Looks Like

For an owner working with a specialized intermediary, the experience is designed so the heavy diligence is finished before anything reaches your desk:

1. A short conversation— 15–30 minutes on the company's tax profile, the size of the year, and timing.
2. A pre-vetted opportunity — a credit with IRS registration, cost segregation, a Tax Credit Transfer Agreement, insurance, and a reliance opinion already assembled.
3. Your advisor's final review — your CPA or tax counsel reviews a finished file and gives informed final approval, rather than building diligence from scratch.
4. Close — a well-run mid-market transfer typically signs and closes in 30–60 days.

Is This Right for Your Company?

A §6418 purchase tends to fit a real-estate C-corporation that:

• Has a meaningful federal tax bill this year or next — often driven by a sale or a strong income year;
• Is a C-corporation with entity-level federal tax (pass-throughs can participate, with more moving parts);
• Can see the liability coming far enough ahead to size and time a purchase.

This article is general information and is not tax or legal advice. Application of §6418, §38, §469, CAMT, depreciation recapture, and the recapture rules depends on a taxpayer's specific facts and should be confirmed with qualified counsel.