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Year-End 2026 Planning: Transferable Tax Credits for C Corporations
If you are weighing a purchase for tax year 2026, the practical calendar is short. These are the dates and decisions that tend to drive the outcome.
The calendar
| Date | What matters |
|---|---|
| Now to mid-November | Forecast 2026 federal tax and §38(c) room; engage your CPA and counsel; shortlist credits. |
| By early December | Complete diligence, including the registration number, so the contract can sign. |
| December 15, 2026 | Fourth installment of corporate estimated tax for calendar-year C corporations (§6655(c)). |
| Return due date (with extensions) | Seller's last day to make the transfer election for a credit determined that year (§6418(e)(1)); the election is irrevocable. |
Decision checklist
- Capacity. Use the §38(c) formula and subtract credits you already earn.
- Which tax year's credit? The credit is taken into account in the transferee's first taxable year ending with or after the seller's year (§6418(d)). Mismatched years change when you benefit.
- Estimated tax effect. Reflect the credit in the December installment only if the facts support it.
- Documentation. Registration number, transfer agreement, credit calculation, seller representations and insurance.
- Recapture. Investment credits carry a five-year schedule; see recapture and insurance.
- Accounting. Align with your ASC 740 policy before the books close.
- Budget. The cash price is not deductible. Compare the discount with your cost of cash and the transaction costs.
When waiting is fine
If your 2026 tax is small or uncertain, or you cannot complete diligence in time, a 2027 purchase tied to an early-year installment may fit better. Market commentary notes that delayed funding dates can change pricing; that is market practice, not law.
Questions finance teams ask
Do we have to pay the seller before December 31?
Payment must be in cash and inside a window that opens on the first day of the seller's credit year and closes at the earlier of the seller's or buyer's return filing (Treas. Reg. §1.6418-1(f) and §1.6418-2(b)(5)(iii)). It is not tied to December 31, so ask the seller when it expects to file.
Does the seller have to finish its return first?
No. The IRS says either party may file first, as long as both returns carry the registration number (IRS FAQ Q11).
What if the credit is bigger than our remaining room?
Size down, or buy in tranches. See the example in the §38(c) guide.
Who should be on the call?
Tax director, controller (for ASC 740), outside CPA and counsel. A single owner for the diligence file helps.
Frequently asked questions
Can I still buy credits for 2026?
Often yes, if you can complete diligence and sign before your return is filed, subject to the credit timing rules. If you want the estimated-tax benefit, close before the installment date.
What is the seller election deadline?
The seller must elect no later than the due date (including extensions) of the return for the year the credit is determined, and the election is irrevocable (§6418(e)(1)).
- 26 U.S.C. §6655, Failure by corporation to pay estimated income tax (Cornell LII)
- 26 U.S.C. §6418, Transfer of certain credits (Office of the Law Revision Counsel)
- IRS: Elective pay and transferability FAQs, Transferability (Q4-Q15)
- 26 U.S.C. §38, General business credit (Cornell LII)
- 26 U.S.C. §50, Other special rules, recapture (Cornell LII)
Owe $50k or more in federal tax?
Tell us your estimated liability and timing. We will show you what transferable credits are available and walk your CPA through the diligence.
Get a tax credit quote §48E buyer guide or call (888) 328-4718
Related guides
- Estimated Tax Payments and Transferable Credit Purchases for C Corporations
- The Section 38(c) Limit: How Much Purchased Credit You Can Use Each Year
- Closely Held C Corporations: Do the Passive Activity Rules Limit Purchased Credits?
- Transferable Tax Credits for C Corporations
- Buying transferable tax credits