Back to blog
Bookkeeping·May 15, 2026
3 Bookkeeping Mistakes That Cost You Money
Messy books don't just cause headaches at tax time — they actively cost you money through missed deductions and bad decisions.
T
Tiago Ribeiro, CPA
Founder & Lead CPA
Messy books cost you money. Here are three of the most common mistakes I see and how to fix them.
1. Mixing personal and business expenses
Open a dedicated business checking account and credit card and use them only for business. This alone saves hundreds in tax prep fees and dramatically reduces risk.
#bookkeeping#cash flow