Magnetic builds an AI tax preparer for CPA firms that scans client documents and enters them into tax software automatically, replacing tedious data-entry work during tax season. The platform addresses the accounting talent shortage by automating document handling and OCR, while active-credential US-based EAs and CPAs with verified PTINs review the output. Founded in 2024, Magnetic is based in San Francisco and was part of Y Combinator's Summer 2025 batch.