TurboTax Self-Employed is the most-used filing tool for sole props in the U.S. It works fine — but the interview model hides a few traps that first-timers walk into every year.
This is the annotated walkthrough. We're not affiliated with Intuit; we just see the same questions in user support every January.
What you need before you start
- Year-end profit and loss by Schedule C category (export from your bookkeeping; ExpenseGhost generates this in one click — see pricing)
- Total business mileage with the four required fields (see mileage log requirements)
- Home office square footage (if claiming)
- 1099s received (1099-NEC, 1099-K, 1099-MISC)
- Quarterly estimated tax payment confirmations from EFTPS
- Prior-year return (helpful for carryover items)
If you don't have year-end books in clean order, stop here. Filing without them is how missed deductions and CP2000 letters happen.
Picking the right edition
For Schedule C income above the hobby-loss line, you need TurboTax Self-Employed (online) or TurboTax Home & Business (desktop). The cheaper tiers (Free, Deluxe) don't include Schedule C.
Desktop is generally a better deal if you have multiple returns to file or want to do "what-if" scenarios. Online is fine for single-return users who want auto-import features.
The interview, step by step
1. Personal info
Standard. Make sure your name and SSN match Social Security records exactly — a mismatch triggers e-file rejection and is the #1 reason returns bounce.
2. Wages & income → Self-employment
Trap #1: Reporting 1099-K and 1099-NEC separately as if they're different income. If you received both for the same business, the income is reported once on Schedule C, line 1. The 1099s tell the IRS what they expect to see; they don't add up to your gross.
The interview will ask you to enter each 1099 individually. Do it (the IRS matches each form), but TurboTax will properly fold them into a single line 1.
Trap #2: Forgetting cash / app payments. Venmo, Zelle, cash — none of it generates a 1099 (yet, in many cases). All of it goes on line 1.
3. Business profile
TurboTax asks for a business name and address. If you're a sole prop without a DBA, leave the business name blank or use your own legal name.
Trap #3: NAICS code. Pick the code that best fits — it doesn't change your tax. But it does affect IRS audit selection. Bankers, lawyers, and consultants get different audit rates than personal-care services.
4. Income from this business
Enter total gross receipts here. If you sell products and have COGS, the COGS section comes later.
5. Expenses
This is where most of the work happens. TurboTax groups expenses into rough categories that mostly map to Schedule C lines, but the labels don't always match cleanly.
| TurboTax label | Schedule C line | |---|---| | Advertising | 8 | | Vehicle | 9 (Part IV) | | Commissions | 10 | | Contract labor | 11 | | Insurance | 15 (NOT health) | | Interest | 16 | | Legal & professional | 17 | | Office supplies | 18 | | Rent | 20 | | Repairs | 21 | | Supplies | 22 | | Taxes & licenses | 23 | | Travel | 24a | | Meals | 24b | | Utilities | 25 | | Other | 27a (Part V detail) |
Trap #4: Health insurance. Don't put your personal health insurance under "Insurance." It's a separate adjustment under "Less Common Situations → Self-Employed Health Insurance," and it lands on Schedule 1, not Schedule C.
Trap #5: SEP-IRA / Solo 401(k) contributions. Same deal — not on Schedule C. They're under "Less Common Situations → Retirement Plans" and reduce AGI on Schedule 1.
6. Vehicle
TurboTax will ask whether you used the standard mileage method or actual expenses. If you've ever switched from standard to actual after taking depreciation, the screen gets weird; consult a CPA.
For standard mileage, you need: business miles, total miles, vehicle make / model / placed-in-service date.
7. Home office
TurboTax asks the simplified-vs-actual question explicitly. The actual method walks you through Form 8829 (see our walkthrough).
Trap #6: The exclusive-use confirmation. TurboTax will ask if the space is used exclusively for business. Answer honestly. If it's not, claiming the deduction is fraud.
8. Estimated taxes paid
Enter each quarterly payment by date. TurboTax matches against the IRS's records via the federal e-file integrity check.
Trap #7: State estimated taxes. TurboTax handles federal here. State estimated taxes go in the state-return section, not federal.
9. Self-employment tax
TurboTax computes this automatically once expenses are in. Verify it against the formula: profit × 0.9235 × 0.153 (capped at the SS wage base for the SS portion). If TurboTax's number is off by more than a dollar, you have something miscategorized — likely a personal expense lurking in deductions.
10. QBI deduction (199A)
TurboTax computes the qualified business income deduction automatically. For most sole props under the income threshold ($191,950 single / $383,900 MFJ in 2024; rising slightly in 2025), it's a flat 20% of QBI.
Above the threshold, "specified service trades or businesses" (consultants, lawyers, doctors, performers) start losing the deduction. TurboTax handles this, but verify the result.
After the interview
Run TurboTax's "Final Review" — it surfaces missing-info errors. Fix them before clicking e-file.
Save a PDF before you transmit. TurboTax's preview includes every form actually filed. This is the only complete record of what was submitted.
What ExpenseGhost provides for TurboTax users
ExpenseGhost exports a year-end packet:
- A Schedule C-categorized P&L matching TurboTax's expense buckets
- A 1099-NEC worksheet (which contractors you paid)
- A mileage summary
- A home office worksheet (square footage + utility totals)
You drop these into TurboTax's interview. The e-file goes faster and the categories match. See pricing.
FAQ
Can I file Schedule C in TurboTax Free?
No. Schedule C requires Self-Employed (online) or Home & Business (desktop).
What if I made less than $600?
You still report it. The $600 is a 1099-issuance threshold for the payer; not an income-reporting threshold for you. Schedule C income is reportable from dollar one.
What if I have multiple Schedule C businesses?
TurboTax supports multiple Schedule Cs. Each business gets its own. SE tax combines them at Schedule SE.
What about state Schedule C equivalent?
Most states accept your federal Schedule C as the starting point and adjust for state-specific items. TurboTax handles the import automatically once you complete federal.
Should I e-file or paper?
E-file. Paper returns take 6+ months to process and are more error-prone. The IRS has been clear about preferring e-file since 2020.
ExpenseGhost provides tax estimates and tax-ready exports. We are not a tax preparer and do not file returns. Estimates are informational — verify every number with a licensed tax professional before filing.