Your CPA needs three core reports at minimum: a Profit and Loss statement for the full tax year, a Balance Sheet as of December 31st or your fiscal year end, and a General Ledger showing all transactions for the period.

The Profit and Loss shows your revenue and expenses, which determines taxable income. The Balance Sheet shows what your business owns and owes, which matters for asset depreciation, loan interest deductions, and owner equity tracking. The General Ledger provides transaction-level detail so your CPA can verify categories and spot anything unusual.

Beyond those three, most CPAs will also request bank reconciliations for each account, credit card statements and reconciliations, loan documents showing principal versus interest breakdowns, a fixed asset list with purchase dates and costs, 1099 information for contractors paid over $600, and payroll summaries if you have employees.

Consistent monthly bookkeeping throughout the year makes generating these reports straightforward. When your books are reconciled each month, the year-end package comes together quickly instead of becoming a frantic reconstruction project.

The reports themselves are the easy part. What matters is whether the underlying numbers are accurate. A Profit and Loss pulled from unreconciled accounts is just a guess dressed up as a financial statement. If your records have duplicate transactions, miscategorized expenses, or missing deposits, your CPA will either spend billable time fixing them or file based on unreliable data.

Year-end cutoffs also need attention. December expenses paid in January should hit December. Revenue earned in December but collected in January needs proper dating. These timing details determine which tax year income and deductions fall into.

When books are clean and organized, your CPA can focus on tax strategy instead of data cleanup. They can identify deductions you might have missed, recommend estimated payments for the coming year, and actually advise you on your financial position. A small business bookkeeper in the San Gabriel Valley who keeps your records current all year means no surprises at tax time and lower CPA bills since they’re not fixing your books before they can file your return.