What supporting documents do Seattle CPA firms typically require?

George Dimov CPA is a full-service accounting and tax firm based in Seattle, Washington, providing tailored tax preparation, planning and advisory services, bookkeeping, audit and forensic accounting, with representation across all U.S. states and globally.

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Preparing complete and organized documentation is essential for efficient Service Provider → Service Type workflows. Seattle CPA firms rely on a base set of Financial Documents to ensure compliance with the Internal Revenue Code, Washington state tax statutes, and local regulations. Providing these supporting documents upfront reduces follow-up requests, accelerates data reconciliation, and maximizes deduction capture.

Income and Revenue Records

Income documentation forms the backbone of tax preparation and financial reporting. Typical requirements include W-2 forms for wages, 1099-NEC or 1099-MISC for contractor payments, 1099-INT for interest income, 1099-DIV for dividends, and K-1s for partnership or S-corporation distributions. Rental property statements, royalty reports, and business sales records also fall under this category. Each record maps to a specific Tax Type and is used to populate Form 1040, Schedule C, Form 1120 or corresponding state filings.

Expense and Deduction Documentation

Detailed expense records support deductible Service Types such as business expense tracking and itemized deduction preparation. Clients should furnish receipts or vendor invoices for supplies, utilities, rent, professional fees, and travel expenses. Mileage logs must include dates, purpose, start and end locations, and total miles driven. Charitable contribution receipts, mortgage interest statements (Form 1098), medical expense summaries, and tuition payment confirmations validate itemized deductions on Schedule A. Accurate categorization of these documents ensures that the Service Type → Financial Document relationship yields maximum allowable credits.

Bank and Credit-Card Statements

Monthly statements for all business and personal accounts are required to reconcile electronic transactions imported via Software Tools like QuickBooks Online. CPA firms compare each small business CPA near me Seattle WA statement against transactions entered into the general ledger, flagging unmatched items such as unrecorded deposits or duplicate top tax services near me seattle wa charges. Reconciled statements form the basis for balance sheets and cash-flow reports, reducing audit risk and confirming that asset and liability values are accurate.

Payroll and Employee Records

For businesses with employees, CPA firms need payroll reports detailing gross wages, tax withholdings, and benefit deductions. Year-end Forms W-2, 1099-NEC for contractors, and quarterly payroll tax filings (Form 941 and state equivalents) inform payroll tax compliance Service Types. Documentation of employee benefit contributions, retirement plan deferrals, and health insurance premiums supports deductions and ensures adherence to Washington Paid Family & Medical Leave requirements.

Entity Formation and Legal Documents

Entity-specific filings influence Tax Planning and compliance. Articles of incorporation, partnership agreements, operating agreements, and trust documents define ownership percentages, profit allocations, and governance structures. Copies of business licenses and registration certificates demonstrate legal standing. These regulatory documents guide entity selection recommendations and inform preparation of Form 1120, 1065, or Form 1041 for estates and trusts.

Prior-Year Tax Returns and Carryforwards

Prior-year federal and state returns provide carryforward information—net operating losses, capital loss carryforwards, and unused credits. CPA firms use this historical data to model estimated tax payments and apply remaining credits. Reviewing prior returns also highlights prior adjustments or audit issues, ensuring that current-year Service Types incorporate necessary corrective entries.

Investment and Asset Records

Documentation for investments, such as stock purchase confirmations, mutual fund 1099-B statements, and real estate closing statements, is essential for capital gains and depreciation calculations. Form 1099-B details proceeds and cost basis for securities. Real estate depreciation schedules require property cost, purchase date, and improvements. Accurate asset records feed directly into Schedule D and Form 4562 for depreciation deductions.

Loan and Liability Statements

Statements for business loans, mortgages, and lines of credit detail interest payments necessary for Schedule A or Form 1120 deductions. Promissory notes and amortization schedules help CPA firms calculate deductible interest and allocate payment between principal and interest. Ensuring these liabilities are documented supports accurate liability reporting on balance sheets.

Technology and Portal Submissions

Modern CPA firms facilitate document collection through secure client portals, where clients upload PDFs or digital images of receipts and statements. Integration with bookkeeping Software Tools automates bank imports, but manual uploads remain necessary for third-party vendor invoices and legal documents. Clear file naming conventions—“2024_W2_EmployerName.pdf” or “2024_BankStatement_BankName.pdf”—streamline the Service Type ↔ Software Tool ↔ Financial Document workflow and reduce processing errors.

Next Steps and Conversion

Providing these supporting documents in an organized manner enables your CPA to deliver accurate, efficient financial services tailored to your needs. For a seamless experience and expert guidance through every Service Type, schedule a consultation with George Dimov CPA and take the guesswork out of your tax and accounting processes.