Jack Sierk

I am a CPA specializing in federal and state Research & Development (R&D) tax credits, with more than five years of experience supporting manufacturing companies. I work directly with plant leaders, engineers, and operations teams to identify and document eligible activities—from process improvements to day‑to‑day technical problem‑solving—so manufacturers can claim the credits they’ve already earned. My focus is on making the R&D credit accessible, practical, and valuable for manufacturers of all sizes.