About the Author

Konstantin Koretskiy

Founder of KKATC

Every answer a KKATC product gives, every guide published on this site, and every correction in the public log carries one name — this one. KKATC was built on twelve-plus years of Fortune-level corporate tax work, and it is maintained on a simple standard: every position cites its authority, and every identified error is published, fixed, and kept on the record.

Experience

12+ years of Fortune-level corporate tax strategy across Financial Services, Media & Entertainment, and Advanced Manufacturing.

KKATC

Founder of KKATC and the person behind every KKATC product: the tax logic, the authority citations, and the published corrections log.

Accountability

Every identified error across KKATC products is published, with the wrong answer, the correct answer, and the authoritative source.

Read the corrections log →

Where the work lives

KKATC Tax answers federal and state questions with the IRC section cited. KKATC Cards is record-keeping and tax-organizing software for trading-card sellers, with free guides on the tax rules of the hobby. Watchdog is the public registry of AI tax errors — including KKATC's own.