What Documents Does a CPA Need for Individual and Business Tax Preparation?
Tax preparation usually goes more smoothly when the records are complete before the return is started. A missing income form, an unreconciled bank account, or an incomplete asset list can delay filing and make it harder to evaluate whether the return is accurate. The exact documents a CPA needs depend on the taxpayer, the entity type, the states involved, and what changed during the year. This checklist is a practical starting point for individuals and business owners.
Start With Prior-Year Information and Changes
Provide your prior-year federal and state returns if the preparer does not already have them. Prior returns help identify carryforwards, depreciation schedules, estimated payments, entity elections, and recurring reporting items. Also prepare a short list of significant changes during the year, such as a move, marriage or divorce, a new dependent, a business purchase or sale, a new state of operation, a property transaction, or a major change in income.
Include copies of tax notices received from the IRS or a state agency. A notice may affect an account balance, payment history, filing status, or the treatment of an item on the current return.
Documents for Individual Tax Preparation
Most individual returns begin with income documents, but the full file may include several categories:
- Employment and retirement income: Forms W-2, 1099-R, SSA-1099, pension statements, and records of any income not reported on a standard tax form.
- Investment income: Consolidated brokerage statements, Forms 1099-INT and 1099-DIV, digital-asset transaction reports, and cost-basis information for sales where the basis is missing or incomplete.
- Pass-through income: Schedules K-1 from partnerships, S corporations, estates, and trusts. If a K-1 is delayed, tell your CPA early rather than assuming the return can be completed without it.
- Real estate activity: Closing statements for purchases, sales, and refinances; rental income and expense records; property-tax statements; mortgage-interest forms; improvement costs; and prior depreciation schedules.
- Other income: Forms 1099-NEC, 1099-MISC, 1099-K, unemployment statements, alimony information where applicable, and records for prizes, awards, or other taxable receipts.
- Deductions and credits: Charitable contribution records, medical expenses when potentially relevant, education forms, dependent-care information, health savings account forms, and energy-improvement documentation.
- Tax payments: Federal and state estimated-tax payment confirmations, extension payments, and any amount applied from the prior-year refund.
If you purchased health coverage through a government marketplace, provide Form 1095-A. If you made a nondeductible traditional IRA contribution or completed a Roth conversion, include the contribution and distribution records and any prior Form 8606 information.
Documents for Business Tax Preparation
A business return should be supported by books that agree to the underlying bank, credit-card, loan, payroll, and sales records. A year-end profit-and-loss statement alone may not be enough. A CPA will often request:
- A year-end balance sheet and profit-and-loss statement, preferably with prior-year comparisons.
- A general ledger and trial balance for the full year.
- Year-end bank and credit-card statements plus completed reconciliations.
- Loan statements showing year-end principal balances and interest paid.
- Payroll reports, Forms W-2 and W-3, quarterly payroll filings, and contractor Forms 1099.
- Sales-tax returns and supporting sales reports when the business collects sales tax.
- Inventory counts and valuation reports for businesses that carry inventory.
- A fixed-asset list showing purchases, disposals, trade-ins, and the date each asset was placed in service.
- Owner contribution, distribution, draw, and shareholder-loan activity.
- Copies of major leases, purchase agreements, financing documents, and closing statements.
- State registration or filing information for every state in which the business operated, employed people, owned property, or made significant sales.
The IRS explains that business records should clearly show income and expenses, and that supporting documents from purchases, sales, payroll, and other transactions feed the accounting records. Good records also help prepare financial statements and support amounts reported on tax returns.
Industry-Specific Records May Be Needed
Contractors may need job-cost reports, work-in-progress schedules, retainage balances, and contract or change-order information. Real estate owners may need a property-by-property income statement, settlement statements, improvement schedules, and records of personal-use days. Manufacturers may need inventory counts, standard-cost or actual-cost reports, overhead allocations, and obsolete-inventory information.
These records do more than support tax preparation. They help the CPA determine whether the accounting records reflect the economics of the business and whether cleanup entries are needed before the return is prepared.
How to Organize the File
Use clearly named folders by category rather than uploading one large, unsorted group of files. Label payment confirmations with the tax type, jurisdiction, amount, and date. Avoid sending the same document in multiple places. If a requested item does not exist, say so; that is more useful than leaving the request unanswered.
Before delivering the business file, review uncategorized transactions, negative asset or liability balances, old outstanding checks, duplicate income, and personal charges recorded as business expenses. If the books are not ready, a focused bookkeeping cleanup before tax preparation can reduce questions and improve the reliability of the return.
A Checklist Is a Starting Point, Not a Substitute for Review
No universal checklist captures every filing requirement. Business structure, location, ownership, foreign activity, transactions, and personal circumstances can change what is needed. The best approach is to provide the core records early, identify unusual events, and respond to follow-up questions while there is still time to resolve them.
If you would like help organizing your records and preparing an accurate federal and state filing, learn more about tax preparation and compliance services or use the button below to start a conversation.
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This article is for general educational purposes and is not tax or legal advice. Requirements vary by taxpayer and jurisdiction.