The practical answer
Trace each shareholder's proposed amount to the deal allocation and the reviewed valuation inputs. Keep cash, stock fair market value and other property separate until the reporting selection is established. A shareholder payment or enterprise purchase price is not automatically the CAP amount.
This guide supports corporate tax teams preparing 2026 CAP records after advisers have reviewed the reporting scope. Its fictional arithmetic demonstrates a source-value bridge, not an independent valuation or transaction classification.
Fix the reporting population and source versions
Start with the reviewed shareholder population, share classes and transaction reference. Obtain the executed consideration terms, closing allocation and valuation schedule used by the advisers. Record each version and the date to which the values relate.
Confirm that the share population and consideration schedule cover the same transaction stage. A pre-closing ownership file combined with a post-adjustment allocation can produce apparent differences even if each file is internally correct.
Keep reportability decisions separate from calculation inputs. The preparation team needs to know which recipients and consideration components advisers selected, but should retain the excluded or unresolved source amounts in a visible bridge rather than erasing them.
Separate cash, stock and other property
The IRS CAP box 2 instructions describe aggregate cash and fair market value of stock and other property received in exchange for shares. Other instructions address circumstances affecting what stock value must be reported. Preserve the components so the reviewer can apply the appropriate treatment.
| Component | Source input | Review control |
|---|---|---|
| Cash | Closing allocation or payment entitlement | Separate entitlement from payment timing and deductions |
| Stock | Number of shares received and reviewed fair market value | Record valuation date, unit value and source |
| Other property | Property description and reviewed value | Retain valuation support and recipient allocation |
| Special terms | Escrow, contingent or disputed consideration records | Flag for timing and reporting review |
| Exclusions or unresolved amounts | Adviser selection and issue log | Explain the difference from the broader deal schedule |
Do not label an account's net bank deposit as the total consideration without explaining fees, withholding or other differences shown in the source records.
Allocate from the actual terms, with class-level controls
Apply only the allocation terms and valuation inputs supported for the relevant shareholder class. Keep the original shares exchanged separate from new shares received; those quantities describe opposite sides of the exchange.
Record the formula inputs in the workbook, including any per-share cash amount, exchange ratio and reviewed unit value. Preserve fractional-share or rounding adjustments in explicit columns instead of burying them in an unexplained balancing entry.
Reconcile by class before comparing the overall total. Common and preferred holders can have different terms. A deal-wide total can balance even when consideration has been assigned to the wrong class or recipient, so both recipient and class checks are useful.
Worked example: cash plus reviewed stock value
Fictional 2026 example. Assume advisers have confirmed the relevant CAP treatment for a larger qualifying transaction. For this small shareholder slice, the reviewed terms provide $10 cash and two new shares for each old common share. The supported fair market value of each new share is $20, and all these components are included for this illustration.
| Recipient | Old shares exchanged | Cash | New shares received | Reviewed stock value | Proposed aggregate |
|---|---|---|---|---|---|
| R1 | 100 | $1,000 | 200 | $4,000 | $5,000 |
| R2 | 200 | $2,000 | 400 | $8,000 | $10,000 |
| Slice total | 300 | $3,000 | 600 | $12,000 | $15,000 |
For R1, 100 times $10 = $1,000 cash and 200 times $20 = $4,000 stock value, totaling $5,000. The complete slice totals $3,000 + $12,000 = $15,000.
Box 3's share quantity concerns the old shares exchanged, so R1's source quantity is 100, not the 200 new shares. The example assumes the valuation and reporting decisions; multiplying these numbers does not establish either decision for a real transaction.
Explain differences from the broader deal summary
Compare the shareholder allocation with the relevant consideration pool, not automatically with a press release's enterprise value. A commercial transaction total can contain debt, expenses or other elements outside the shareholder schedule under review.
Build a bridge showing the selected pool, included recipients, documented exceptions, unresolved items and any supported allocation adjustments. Every difference should have a source or a question. Do not force the CAP worksheet to a headline total by increasing shareholder amounts.
For changed valuations or terms, identify all dependent rows and recompute their class and overall totals. Keep the prior version and the reason for the change. A small unit-value revision can affect many recipients even when their share quantities remain unchanged.
Deliver a calculation packet that another reviewer can reproduce
Include the reviewed population, consideration terms, valuation source, allocation workbook and reconciliation. Mark which inputs were confirmed by advisers and which remain provisional. The reviewer should be able to reproduce a selected shareholder row from the source inputs.
Keep the final approved calculation version linked to the preparation output. If a later shareholder correction arrives, the team can identify which population or value changed and determine the affected records without rebuilding the entire transaction from memory.
The download provides separate component and difference fields so the calculation stays transparent. It supplies evidence for review without deciding legal recognition, fair market value or the reporting treatment of contingent consideration.
Trace a CAP amount from deal terms to a shareholder row
Read the workflow as text
- Fix reviewed terms and population. Use matching transaction, class and source versions.
- Calculate distinct components. Keep cash, new-share value and other property separate.
- Reconcile class and deal pools. Explain exclusions, unresolved items and rounding differences.
- Preserve the approved calculation. Link source inputs and formulas to the final recipient records.
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CAP consideration source-value reconciliation
Save the editable text worksheet and use it with your own records. Keep completed copies in your secure working files.
Download the worksheet TXTCommon questions
Does the headline transaction price belong in CAP box 2?
Not automatically. Trace the reportable shareholder consideration using the reviewed deal terms and valuation inputs, with a bridge to any broader transaction total.
Which shares support box 3?
The IRS instructions identify the shares exchanged in the reporting corporation. Keep them separate from new shares received as consideration.
Can I use the net payment as aggregate consideration?
Only after the source components and any differences are explained. Cash, stock and other property may all require review.
Should every shareholder class use the same allocation formula?
Use the executed terms for each class. Different rights or exchange terms can require different source calculations.
What if a reviewed unit value changes?
Identify the dependent recipient rows, recompute the allocation and preserve both versions with the reason for the revised input.
Official sources and scope
Sources checked September 5, 2026. Use the edition for the tax year and filing method you are working with; later instructions may change thresholds, fields, or procedures.
- IRS Form 1099-CAP instructions
April 2025 continuous-use instructions for 2025 and subsequent years until superseded: reporting scope, exceptions, shareholder fields and consideration definitions.
- IRS Publication 1099
2026 General Instructions for Certain Information Returns: recipient data, account references, corrections and filing/furnishing framework.