TL;DR: Run this 8-point checklist before your CPA appointment: every transaction categorized, accounts reconciled, income tied to Stripe or invoices, owner draws separated, loan balances matched, payroll recorded correctly, assets listed, and prior year closed. Missing any item adds CPA time at $150–$400/hour.
When I sent my CPA what I thought were clean books, she came back with 47 questions and a $1,200 cleanup bill before touching a single tax form. The actual prep was extra.
Here is the checklist I now run every time I hand off books to an accountant.
Are your books actually clean?
Most founders think "clean books" means the numbers look roughly right. CPAs define it differently: every transaction categorized, every account tied out to a statement, every dollar traceable. The gap between these two definitions is where cleanup bills live.
The 8-Point Cleanliness Checklist
1. Every transaction is categorized
Filter your accounting software for uncategorized transactions. If you see more than a handful, categorize them before the appointment. Uncategorized items are the single biggest driver of CPA cleanup fees.
2. Bank accounts are reconciled
Your software balance and your actual bank statement should match as of the last day of the period. Log into your bank, note the closing balance, and compare. Any difference means something is unrecorded or duplicated.
3. Income ties to your payment processors
Pull your Stripe, PayPal, or invoice totals for the year. Your revenue account in your books should match. A $5,000 gap means either revenue is missing or payouts hit the wrong account.
4. Owner draws are coded correctly
Money you moved from the business to yourself is an owner's draw — not a business expense. CPAs fix this constantly at $150–$250 per hour. It takes two minutes to fix it yourself.
5. Loan balances match your statements
If you have a business loan or line of credit, the balance in your books should match your lender's statement. The interest you paid should live in an interest expense account, not mixed with principal.
6. Payroll is fully recorded
If you ran payroll, your books should show gross wages, payroll taxes, and net pay separately. Many founders record only the net transfer and leave a tax liability unrecorded — which creates problems at filing time.
7. Fixed assets are listed
Equipment, computers, and furniture over $2,500 should appear as assets on your balance sheet, not lumped into expenses. Your CPA can advise on depreciation and Section 179 treatment — but they need to see the items first.
8. Prior year is properly closed
If you are not in your first year of business, your prior period's retained earnings should be closed and equity should open at the right balance. Most accounting software does this automatically when you close the year — but many founders skip the close.
What it costs to skip this
A CPA at $250/hour who spends 4 hours fixing your books before filing charges $1,000 before they write a line of tax advice. At 8 hours — which is common when books are 6+ months behind — that is $2,000 just to reach the starting line.
Prosper imports your historical transactions, auto-categorizes them, and surfaces only the items that need your judgment. Most founders finish the review in an afternoon — and it stays clean from then on, because Prosper categorizes new transactions as they come in.
FAQ
How do I know if my books are clean? Clean books means every transaction is categorized, all bank accounts are reconciled, and your income matches your payment processor statements. If your CPA can open your books and understand everything without calling you, they are clean.
What happens if I give a CPA messy books? Your CPA will charge their hourly rate to clean them up before filing. Cleanup typically runs $150–$400 per hour and adds $500–$3,000 or more to your bill depending on how far behind you are.
What is the fastest way to clean up my books? Connect your accounts to a tool that auto-categorizes transactions. Prosper imports your historical activity, categorizes it automatically, and surfaces only the exceptions for your review — most founders finish the review in an afternoon.