What the CAP Program Actually Requires
The Compliance Assurance Program is designed to resolve tax issues before a return is even filed, through ongoing, real-time engagement between the taxpayer and the IRS rather than a traditional after-the-fact audit. For companies in this program, a tax credit purchase isn't a transaction that might draw IRS attention someday, it's a transaction that will be reviewed as a matter of course. That reality shapes CAP buyers' due diligence process from the very beginning of a deal, not just at closing.
How CAP Buyers Actually Prepare
The defining feature of a CAP-ready diligence file is that it's built to answer an information document request before that request ever arrives. That means assembling documentation that goes beyond what's strictly necessary to close the deal: full construction-start evidence, complete FEOC and material assistance certifications, engineering and cost-segregation reports organized in a way that maps clearly to the specific credit provisions being claimed, and a clean paper trail showing how the purchase price was determined. CAP buyers also tend to negotiate stronger indemnification and tax proceedings language into their transfer agreements, since they know from experience that an examination is a matter of when, not if. That same instinct is worth applying to recapture exposure specifically, not just initial eligibility. As we described in What a Recapture Notice Actually Triggers, a compliance failure years after closing still requires a clean, well-documented record to respond to quickly, and CAP buyers are generally the ones best positioned to do that.
Why This Standard Is Spreading Beyond CAP
Buyers outside the CAP program haven't seen the same level of audit activity yet, but that's changing, and sophisticated buyers are adjusting their diligence practices accordingly rather than waiting for an examination to force the issue. This is really the same principle we described in The Data Room Was Never the Point: more documents don't create confidence on their own, but the right documents, organized so a reviewer can actually use them, do. CAP-style preparation is what that principle looks like when the reviewer in question is an IRS examiner rather than a buyer's own diligence team.
Where AI Actually Helps With This
Building an audit-ready file at CAP standards has historically been slow, precisely because it requires connecting information scattered across engineering reports, legal opinions, and financial models into something coherent. That's the exact bottleneck we discussed in AI Isn't Replacing Due Diligence: the constraint isn't expertise, it's the repetitive work of finding and connecting information that already exists. Tools that reduce that repetitive burden don't change what a CAP-ready file needs to contain, but they meaningfully change how long it takes to assemble one, and how confident a team can be that nothing was missed.
What Non-CAP Buyers Should Take From This
For buyers not yet operating under CAP-level scrutiny, the practical lesson isn't to panic about audit risk, it's to build the habit of documentation discipline before it's mandatory. A diligence file assembled to CAP standards from the start is one that holds up regardless of whether an examination ever happens, and it's far cheaper to build that discipline into a standard process now than to reconstruct a defensible record under time pressure after an audit notice arrives. As audit activity in this market continues to grow, the buyers already operating at this standard will be the ones least disrupted when it does.