Skip to content
StartupCFO logoStartupCFO.AI
Back to Knowledge Base
Startup Accounting

Common Financial Mistakes First-Time Founders Make

Written by Aparna Devalla, CPA

Curated by Rubric Financial

1 / 4

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.

Want your books handled properly?

A bookkeeper and CPA who work as one team, with your monthly close done and your ledger ready for diligence.

No spam, ever. If the download doesn't start, email us.

Or talk it through: