Bookkeeping is the part of running a business almost no one enjoys — so it slips. But messy books cost real money: missed deductions, penalties, and decisions made on bad numbers. Here are the five mistakes we see most.
1. Mixing Personal and Business Money
Running personal expenses through the business account (or vice versa) makes books a nightmare and can weaken your deductions. Fix: one dedicated business account and card, always.
2. Not Recording Cash and Small Expenses
Cash purchases, app subscriptions, and small supplies add up to thousands a year — and if they're not recorded, they're not deducted. Fix: capture every receipt, even small ones.
3. Falling Behind
“I'll catch up later” turns into a frantic, expensive scramble in April with deductions lost to memory. Fix: reconcile monthly, not annually.
4. Misclassifying Transactions
Putting expenses in the wrong category distorts your profit and can misstate your taxes. Fix: use a consistent chart of accounts and review it regularly.
5. Ignoring the Numbers Until Tax Time
Books aren't just for taxes — they tell you whether you're actually making money. Owners who review monthly catch problems early. Fix: look at your numbers every month.
Good Books Pay for Themselves
Clean books mean a cheaper return, more captured deductions, and smarter decisions. Li CPA Group helps NYC owners get — and stay — on top of their books.