Behind on Your Books? How to Catch Up Before Tax Season

Why being behind costs more than you think

Late books lead to late filings, and IRS penalties compound monthly — the failure-to-file penalty alone is 5% of unpaid tax per month, up to 25%. You can see the full penalty structure on our bookkeeping statistics page. Behind books also mean missed deductions, because receipts get harder to find the longer they sit.

Step 1: Gather statements for every account

Download every monthly statement for every business bank account, credit card and loan for the full period you’re behind. Banks typically keep several years available online. Also collect payroll reports, sales platform reports (Square, Stripe, Shopify) and any 1099s or W-2s already issued.

Step 2: Work oldest month first

Start with the earliest month and move forward. Each month’s ending balance is the next month’s starting balance, so working out of order creates reconciliation problems that cascade. Categorize, then reconcile, then move on.

Step 3: Separate personal and business

If personal purchases ran through business accounts (or the reverse), record them as owner’s draws or owner contributions rather than expenses. Going forward, a dedicated business card and account makes this problem disappear.

Step 4: Clean up what’s already there

Catching up often reveals earlier errors: duplicate transactions from re-connected bank feeds, a bloated Undeposited Funds balance, or old reconciliations that no longer tie out. That’s bookkeeping cleanup, and it needs to happen before the books are trustworthy.

Step 5: Hand clean records to your CPA

Your CPA needs a reconciled P&L, balance sheet and ideally a trial balance for each year. Clean books mean fewer billable CPA hours and fewer follow-up questions.

• Reconciled statements for every account
• Year-end P&L and balance sheet
• Fixed asset purchases listed
• Payroll and contractor totals
• Loan balances matching lender statements

When to get help

If you’re more than a few months behind, have multiple years unfiled, or your bank feeds have been disconnected and reconnected repeatedly, a professional catch-up is usually faster and cheaper than DIY. Tejas Bookkeeping doesn’t prepare tax returns, but I get books ready for the CPA who does.