Accounting Records You Need for Tax Season (Complete 2026 Checklist)
A complete checklist of accounting records you need for tax season — income, expense, asset, payroll, and supporting documents. Print this before filing.
Quick Answer
For tax season, you need: (1) income records — sales reports, 1099-NECs received, merchant statements, bank deposit summaries; (2) expense records — categorized P&L, major receipts, vehicle/mileage log; (3) asset records — fixed asset additions, depreciation schedule, loan statements; (4) payroll records — W-2s, 1099-NECs issued, payroll tax filings; (5) prior-year return and any IRS notices.
Tax filing is faster, cheaper, and less stressful when records are organized in advance. Most preparers ask for the same set of documents every year — get them ready and the rest is mechanical.
Table of contents
Income Records
- Sales reports and invoice summaries
- 1099 forms received (1099-NEC, 1099-K, 1099-MISC)
- Merchant processor statements (Stripe, Square, PayPal)
- Bank statements showing deposits
- Refunds and returns documentation
Expense Records
- Categorized expense report from your accounting software
- Receipts for major expenses (travel, equipment)
- Vehicle and mileage logs
- Home office documentation, if claiming
- Meals (50% deductible, requires receipts)
Asset Records
- Fixed asset additions and disposals during the year
- Depreciation schedule (carry-forward from prior years)
- Loan statements and amortization schedules
- Lease agreements
Payroll and Contractor Records
- Form W-2 and 941 quarterly filings
- Form 1099-NEC issued to contractors (deadline: Jan 31)
- State payroll filings
- W-9s from all contractors
Other Documents
- Prior-year tax return
- Estimated tax payment records
- Any IRS or state tax notices received during the year
- Business entity documents if changed
Best Ways to Get Started
- →
Create a 'Year-End Tax' folder in January
Every document the CPA will need goes there as it arrives. Tax prep becomes 30 minutes.
- →
Reconcile every account through year-end
Don't file from unreconciled books — errors carry into the return.
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Issue 1099-NECs by January 31
Penalty for late filing is $290 per form. Collect W-9s before paying any contractor.
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Build a depreciation schedule and update it
Roll the schedule forward each year. Don't recreate from scratch.
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Use a tax-prep checklist your CPA provides
Most preparers send a tailored list each year. Follow it exactly to avoid back-and-forth.
Step-by-Step Plan
- 01
Close the books through year-end
Reconcile every bank, card, and loan account through Dec 31.
- 02
Issue contractor 1099-NECs
By January 31. Collect W-9s before paying any contractor over $600.
- 03
Generate the standard reports
P&L, balance sheet, general ledger. Export as PDF for the CPA package.
- 04
Update the depreciation schedule
Roll forward, add new assets, retire disposed assets.
- 05
Compile the year-end folder
Income, expense, asset, payroll, prior return, notices. Single folder shared with the CPA.
- 06
Hand off or self-file
If using a CPA, send the complete package early — preparers fill up fast.
Records Needed by Business Type
| Document | Sole Prop | Partnership/LLC | S-Corp/C-Corp |
|---|---|---|---|
| Categorized P&L | Required | Required | Required |
| Balance sheet | Recommended | Required | Required |
| 1099-NECs issued | If applicable | If applicable | If applicable |
| W-2s + 941 filings | If employees | If employees | Always (owner is employee) |
| Schedule K-1 prep | No | Yes (one per partner) | Yes (one per owner) |
| Depreciation schedule | If assets | If assets | If assets |
Mistakes to Avoid
- ✗Filing before reconciliations are complete.
- ✗Missing 1099-NEC filings — $290 per form penalty.
- ✗Forgetting prior-year tax notices the CPA needs to see.
- ✗Submitting partial records and answering questions piecemeal.
- ✗Waiting until April — preparers are slammed by then.
Pro Tips Advanced
- ★Start the year-end folder on January 1 and add to it as documents arrive.
- ★Take a year-end inventory count if you carry inventory.
- ★Print the depreciation schedule and verify each asset still exists.
- ★Ask your CPA in November about year-end tax moves — by April it's too late.
Frequently Asked Questions
Sources
- • Publication 334: Tax Guide for Small Business — Internal Revenue Service
- • Generally Accepted Accounting Principles (GAAP) — Financial Accounting Standards Board
- • Small Business Financial Management — U.S. Small Business Administration
All articles are reviewed for factual accuracy by a credentialed accounting professional before publication.
Elena is a Certified Public Accountant with 14 years of experience advising small businesses on bookkeeping systems, tax planning, and financial controls. She previously led the small business advisory practice at a regional accounting firm.
