Guide · 11 min read · 2026 edition
The forms, the math, the deadlines, and the deductions — start to finish, no jargon.
All 1099s (NEC + K), bank and payment processor statements, invoice records. Total it up. The number doesn't depend on what forms you received.
Pull from your bank and credit card statements (or your bookkeeping software). Categories: home office, mileage, software, equipment, phone/internet (business %), professional fees, education, marketing, supplies.
Business name, address, NAICS code (look it up — it's just an industry classification). Lines 1–7 are revenue. Lines 8–27 are expense categories. Net profit at the bottom flows to your 1040 and Schedule SE.
Self-employment tax. Net profit × 0.9235 × 0.153 = SE tax owed. Half of that is deductible against your income tax (line on your 1040). Tax software does this automatically.
Schedule C profit goes on Schedule 1 (additional income). SE tax goes on Schedule 2 (additional tax). Half SE tax deduction goes on Schedule 1 (adjustments). All flow to your 1040.
Most states have their own income tax return. A few (TX, FL, WA, NV, TN, SD, WY, AK, NH) don't tax earned income. Your state form mostly piggybacks off your federal numbers.
Owe more than you can pay? File anyway and request an installment agreement online. Late-filing penalty (5%/month) is much worse than late-payment (0.5%/month).
SnapBooks builds your Schedule C as you go. Export and hand to TurboTax or your accountant in 60 seconds.
Start freeTotal all your freelance income, total your business expenses, fill out Schedule C (profit/loss), Schedule SE (self-employment tax), and your 1040. Most freelancers use TurboTax Self-Employed, FreeTaxUSA, or an accountant. Expect to owe both income tax AND 15.3% self-employment tax.
Yes, if you netted $400 or more from self-employment. The $1,000 threshold is only about whether you need to pay quarterly estimates — separate from filing. Below $400 net, you don't owe SE tax, but you should still report the income.
Four quarterly estimated payments (April 15, June 15, September 15, January 15) plus a final reconciliation when you file by April 15 the following year. Pay via IRS Direct Pay (free, from bank account), EFTPS, or the IRS2Go app. State payments go through your state's tax site.
Rule of thumb: 25–30% of every payment. Higher earners or high-tax states (CA, NY) — closer to 35%. Move it to a separate savings account the moment it lands so you don't accidentally spend it.
Yes — TurboTax Self-Employed, FreeTaxUSA, or H&R Block walk you through it. DIY makes sense up to ~$80k revenue. Above that, or if you have an S-corp / multiple states / unusual deductions, an accountant usually saves more than they cost.
Report the income anyway. You're legally required to report ALL business income, 1099 or not. The IRS doesn't care whether a form was issued — only that your numbers match what's been reported about you. Bank statements and your own books are the source of truth.
If you physically worked in another state (on-site client, conference, retreat) you may owe non-resident state tax there. Remote work for an out-of-state client usually doesn't trigger it. Check that state's nexus rules — thresholds vary.