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Startup Accounting

Common Financial Mistakes First-Time Founders Make

Written by Aparna Devalla

Curated by Rubric Financial

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Mixing Personal and Business Finances

  • Using a personal bank account for business transactions makes it nearly impossible to produce clean financial statements and creates audit risk.
  • Commingled funds can pierce the corporate veil, exposing founders to personal liability for company debts and obligations.
  • Open a dedicated business bank account and business credit card before spending a single dollar. Mercury, Brex, and SVB (now part of First Citizens) all offer startup-friendly options.
  • Reimburse founders for legitimate business expenses through a formal expense reimbursement process with receipts and documentation.

About the author

Aparna DevallaCPA

Head of Tax & Accounting

CPA and Head of Tax & Accounting at StartupCFO. Specializes in multi-state tax compliance, R&D credits, and GAAP-compliant books for venture-backed startups.

More articles by Aparna →

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