Listed as a CPA in IRS public preparer records. Source: IRS PTIN FOIA extract (Feb 2026), retrieved October 23, 2026. https://www.irs.gov/pub/foia/foia-illinois-extract.csv No state license number is on file. Specialties are blank until this preparer claims the listing. CPA Seek does not contact preparers.

Willard J. Defilipps

CPA · Willard J DE Filipps, CPA, PC

Mount Prospect, Illinois 60056

Willard J. Defilipps, CPA in Mount Prospect, IL

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Willard J. Defilipps, CPA in Mount Prospect · CPA Seek