In the U.S. tax system, the responsibility to prove the legitimacy of expenses and income lies entirely with the taxpayer. This instruction will help you create a "gold standard" of documentation to protect your business during IRS inspections, bank audits, or USCIS inquiries.
Document Retention Period: At least 6–7 years. Note: This guide is for informational purposes and aimed at minimizing risks when doing business in the USA.
1. Legal Archive
These documents confirm the structure and legality of your organization's activities:
- Registration Forms: Articles of Organization/Incorporation and the EIN Confirmation Letter (Form CP 575).
- Tax Elections: Copies of Form 8832 (Entity Classification), Form 2553 (S-Corp Election), and Form 8822-B(Change of Address) with proof of mailing.
- Founding Documents: Operating Agreement or Corporate Bylaws.
- Corporate Resolutions: Annual meeting minutes and written orders from the director regarding salaries, bonuses, or dividend distributions.
2. Payroll and Owner Distributions
Necessary to prove the legality of your personal income:
- Paystubs: Detailed breakdowns of each payment (Gross Pay, taxes, Net Pay).
- Annual Forms: W-2 (for employees) or 1099-NEC (for independent contractors).
- Hiring Forms: Signed W-4 and I-9 forms (the latter confirms the right to work in the U.S.).
- Dividends: Form 1099-DIV and minutes regarding the distribution of net profit.
3. Operational Archive (Income & Proof of Work)
These prove the reality of your business and the origin of funds in your bank account:
- Agreements: Signed contracts with clients.+1
- Invoices: All issued invoices, numbered and matched exactly to bank transactions.
- Deliverables: Copies of reports, software links, design layouts, screenshots, or project correspondence.
- Bank Statements: Monthly statements for all business accounts and cards.
4. Deductible Business Expenses
Records used to legally reduce taxable profit:
- Receipts: All receipts over $75 (though we strongly advise saving all of them).
- Travel Logs: A Mileage Log if you use a personal vehicle; boarding passes and hotel confirmations for air travel.
Technical Archiving Rules
- 7-Year Rule: Do not destroy documents for at least 7 years, even if the company is closed, as the statute of limitations can reach this far.
- Receipt Commentary: Manually write the business purpose on receipts (e.g., "Meeting with client X re: project Y").
- Synchronization: The invoice amount must exactly match the deposit in your bank statement.
- Digitalization: The IRS accepts electronic records. Organize cloud storage (Google Drive/Dropbox) with a clear year-based structure: 2025 -> 01_Income, 02_Expenses, 03_Payroll, 04_Legal.
Official IRS Sources
- IRS Recordkeeping for Businesses
- IRS Publication 583 - Starting a Business and Keeping Records
- IRS Publication 463 - Travel, Gift, and Car Expenses
CPA Tips
- Separate Finances: Never pay for personal items from a business account. If it happens accidentally, categorize it as an "Owner's Draw" to avoid piercing the corporate veil.
- Mileage Log is Mandatory: Lack of a mileage log is the #1 reason the IRS rejects vehicle deductions. Use automated apps to track this daily.
- Scan Immediately: Thermal paper receipts fade over time. Digital copies are safer and officially recognized by the IRS.