📊 Income & Transaction Forms For Schedule C Filers - LLC, Sole Prop

  • Form 1099-NEC: Reports nonemployee compensation. Clients send this if they paid you $600 or more during the tax year.

  • Form 1099-K: Reports payment card and third-party network transactions. Payment processors like PayPal, Stripe, or Venmo issue this.

  • Form 1099-MISC: Reports miscellaneous income like rent, prizes, or awards received by your business.

  • Gross Receipts Log: Detailed records of any sales, cash, or check income not reported on a 1099.

📉 Deduction & Expense Records

  • Form 1098: Reports mortgage interest if you claim a home office deduction and own the property.

  • Vehicle Mileage Log: Tracks business miles driven, calendar dates, and total annual mileage for the vehicle deduction.

  • Receipts and Invoices: Detailed documentation for operating costs like advertising, insurance, supplies, and software subscriptions.

  • Home Office Square Footage: Dimensions of your dedicated office space versus the total size of your home.

➡️ Associated Tax Schedules

  • Schedule SE (Form 1040): Calculates self-employment tax on net earnings over $400.

  • Form 8829: Calculates the detailed expenses for the business use of your home.

  • Form 4562: Reports depreciation and amortization for large equipment or assets purchased for the business.

To help narrow down your preparation checklist, let me know:

  • What industry or type of work is your business in?

  • Do you use a personal vehicle or home office for work?

  • Did you buy any large equipment (computers, machinery, vehicles) this year?

📊 Corporate & Partnership Tax Returns

  • Form 1120-S: The annual federal tax return for an S-Corporation.

  • Form 1065: The annual federal tax return for a Partnership or multi-member LLC.

  • Schedule K-1: The mandatory form generated for each owner/partner to report their share of income, deductions, and credits on their personal tax return.

🗒 Core Financial Statements

  • Balance Sheet (Form 1120-S Schedule L / Form 1065 Schedule L): A statement showing business assets, liabilities, and equity at the beginning and end of the tax year.

  • Profit and Loss (P&L) Statement: A detailed summary of revenues, costs, and expenses incurred during the year.

  • Trial Balance: A bookkeeping report listing the balances in all ledger accounts to ensure books are balanced.

  • Bank & Credit Card Statements: Year-end statements and reconciliations for all business accounts to verify cash balances.

💵 Gross Receipts & Income Tracking

  • Forms 1099-NEC / 1099-K: Tax forms issued to your business by clients or payment processors for services rendered.

  • Sales Tax Reports: Documentation of state and local sales taxes collected and remitted.

  • Merchant Account Summaries: Reports from processors like Stripe or Square detailing gross sales and processing fees.

💡 Deductions & Expense Records

  • Form 1120-S (Schedule K-1) / Form 1065 (Schedule K-1): If the entity owns stakes in other partnerships or corporations.

  • Payroll Reports (Forms 941 / 940 / W-3): Critical for S-Corps to verify "reasonable compensation" paid to shareholder-employees.

  • Form 1098: Mortgage interest statements if the business owns real estate.

  • Amortization & Depreciation Schedules: Records of fixed assets purchased (machinery, vehicles, computers) to calculate Section 179 or bonus depreciation.

⚠️ Legal & Governance Documents

  • Partnership Agreement / Operating Agreement: Legal documents defining profit/loss splits, capital contributions, and ownership percentages.

  • Shareholder Stock Ledger: For S-Corps, tracking the number of shares owned by each individual to calculate pro-rata income allocations.

  • Basis Logs: Ongoing calculations of each owner's stock/debt basis (S-Corp) or outside basis (Partnership), which dictates if losses can be deducted or distributions are taxable.

➡️ Hidden Costs & Compliance Warnings

  • Late Filing Penalties: The IRS heavily penalizes late partnership and S-Corp returns on a per-partner/shareholder, per-month basis. Missing the deadline can easily cost thousands of dollars even if no tax is owed.

  • State Entity Fees: Many states impose franchise taxes or minimum taxes on S-Corps and Partnerships (e.g., California’s $800 annual tax) regardless of profitability.