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Self-Employment Tax Checklist

Document checklist for freelancers, sole proprietors, and gig workers filing Schedule C.

Tax-year note: figures marked TY2025 apply to returns filed in 2026; figures marked TY2026 apply to the current tax year (returns filed in 2027).

Quick Answer

  • For self-employment taxes, gather all 1099-NEC and 1099-K forms, business bank statements, expense records categorized by type, vehicle mileage logs, and home office measurements. You will also need records of quarterly estimated tax payments and health insurance premiums if self-paid.

Section 01

Income Documents

Section 02

Business Information

Section 03

Expense Documentation

Section 04

Vehicle and Mileage

Section 05

Home Office

Section 06

Self-Employment Tax and Health Insurance

Section 07

NJ-Specific Items

Frequently Asked Questions

What is the difference between 1099-NEC and 1099-K?

Form 1099-NEC can report qualifying nonemployee compensation; Section 6041A's threshold is $2,000 for TY2026, subject to payee, payment-method, and other rules. Form 1099-K covers payment-card transactions without a minimum and third-party-network transactions that generally exceed both $20,000 and 200 transactions federally. NJ-WT's $1,000 rule concerns a payer's New Jersey state-copy filing duty and does not redefine the federal issuer/payee-statement threshold. Taxability does not depend on receiving a form, and the same receipt must not be counted twice.

Can I use the standard mileage rate if I used actual expenses last year?

There are restrictions on switching. If you previously used actual expenses and claimed MACRS depreciation or Section 179 on the vehicle, you generally cannot switch back to the standard mileage rate for that vehicle.

What is the QBI deduction and does NJ allow it?

The Section 199A QBI deduction can allow eligible self-employed taxpayers to deduct up to 20% of QBI after allocable deductions, subject to the taxable-income ceiling and other limits. NJ does not allow this deduction - your NJ taxable income may therefore be higher than your federal taxable income.

How do I handle the hobby loss rules?

IRC Section 183(d) creates a rebuttable presumption only that an activity is engaged in for profit when gross income exceeds the deductions attributable to it in at least 3 of 5 consecutive tax years. It is not a safe harbor: failing the test creates no contrary hobby presumption, and meeting it does not by itself establish a Section 162 trade or business or Schedule C treatment. Profit motive otherwise turns on the nine non-exclusive factors in Treas. Reg. Section 1.183-2(b); no factor or numerical majority controls. If the activity is not engaged in for profit, income remains reportable while current law generally disallows its operating-expense deductions.

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Tax advice disclaimer: This material is for general educational information only and is not legal, tax, or accounting advice for your specific facts. A CPA-client relationship is formed only through a signed engagement letter.