1099B Reconciliation View

Understanding 1099-B Reconciliation in K1 Aggregator®

Applies to: K1 Aggregator, Form 1099-B / Consolidated 1099 documents
Audience: Preparers, reviewers, and engagement leads
Article type: Feature guide

Summary

When K1 Aggregator processes a Form 1099-B, it extracts every individual transaction rather than only the summary figures. It then adds those transactions back up and compares its own arithmetic against the totals the broker printed on the document. The 1099-B Reconciliation view shows you the result of that comparison at two levels: across the whole document, and within each reporting category.

A green check mark means the extracted detail sums to the broker's stated total. When every indicator is green, the transaction detail is complete and you can move to review judgment items instead of tying out numbers.

Where to find it

Open the investment detail for a processed Form 1099-B. The reconciliation panels appear at the bottom of the page, below the transaction grid.

Frequently asked questions

Does a green check mean the numbers are correct?
It means the extracted detail agrees with the totals the broker printed. It confirms completeness and internal consistency. It does not validate the broker's own reporting, and it does not replace preparer judgment on holding periods, basis adjustments, or wash sale application across accounts.

Does the reconciliation change any values?
No. It is a read-only comparison. It reports agreement or disagreement and does not adjust extracted data.