Schedule C straight from your books: map your accounts once
How each Schedule C line maps to accounts in your chart of accounts, what the books can and can't give your preparer, and the Tax Form Summary report in AcboBooks.
7 min read · October 30, 2026
What Schedule C is
Schedule C (Form 1040), Profit or Loss From Business, is where a sole proprietor, or a single-member LLC taxed as one, reports the business's income and expenses. The net profit flows to the owner's Form 1040 and to Schedule SE for self-employment tax. For the 2026 tax year it is due with the return, on April 15, 2027.
The form is really a profit and loss statement with fixed headings. If your chart of accounts lines up with those headings, the books can give your preparer the figures almost directly.
Mapping accounts to lines
The line numbers below are from the 2025 Schedule C, the latest published; the 2026 form usually appears late in the year.
| Line | Schedule C heading | Typical accounts |
|---|---|---|
| 1 | Gross receipts or sales | Sales, service income, shipping charged |
| 2 | Returns and allowances | Refunds, discounts given |
| 4 | Cost of goods sold | Cost of goods sold, materials |
| 6 | Other income | Other business income, such as finance charges collected |
| 8 | Advertising | Advertising and marketing |
| 9 | Car and truck expenses | Vehicle fuel and repairs, or mileage |
| 10 | Commissions and fees | Sales commissions and fees |
| 11 | Contract labor | Subcontractors and freelancers |
| 13 | Depreciation and section 179 | Depreciation expense |
| 15 | Insurance (other than health) | Business insurance |
| 16a / 16b | Interest: mortgage / other | Loan and card interest |
| 17 | Legal and professional services | Accounting, legal fees |
| 18 | Office expense | Office supplies, postage |
| 20a / 20b | Rent or lease: equipment / other property | Equipment rental, office rent |
| 21 | Repairs and maintenance | Repairs |
| 22 | Supplies | Shop and job supplies |
| 23 | Taxes and licenses | Business licences, employer payroll taxes |
| 24a / 24b | Travel / deductible meals | Travel; meals (generally 50% deductible) |
| 25 | Utilities | Phone, internet, power |
| 26 | Wages | Gross wages paid to employees |
| 27b | Other expenses | Bank charges, dues, anything else (listed in Part V) |
| 30 | Business use of your home | Home office, if you track it in the books |
A few rules of thumb. Keep meals in their own account, because only part is deductible. Keep contract labor apart from wages: one goes on line 11 and needs 1099s, the other on line 26 with W-2s. And the owner's draws are not an expense on any line; see owner draws.
What the books can't give you
- Calculated lines. Lines 3, 5, 7, 28, 29 and 31 are subtotals; your preparer or tax software works them out.
- Depreciation for tax. Tax depreciation, section 179 (up to $2.5 million for 2025) and bonus depreciation are elections on Form 4562. Your book depreciation may not match.
- Car expenses. If you use the standard mileage rate, line 9 comes from your mileage log, not your fuel receipts. See 2026 mileage rates.
- Home office. Form 8829 or the simplified method ($5 a square foot, up to 300 square feet) is worked out on the return.
- Inventory detail. Part III wants opening and closing inventory and purchases; the books give the cost of goods sold as one figure.
- The 27a deduction for energy efficient commercial buildings comes from Form 7205, not the books.
The Tax Form Summary report
In AcboBooks, each income and expense account can carry a tax line, chosen in the chart of accounts. The standard accounts in a new company come already mapped. The Tax Form Summary report then totals the books by Schedule C line for any date range (last calendar year by default), on the accrual or cash basis:
- Each line shows the accounts behind it, and each account opens its register for the period.
- Accounts not mapped yet are listed, and you can map them from the report.
- The totals the form asks for, gross income, total expenses and tentative and net profit, are shown.
- It exports to Excel or CSV and prints to PDF for your preparer.
It is a worksheet, not a return: AcboBooks does not file returns, and every figure should be checked against the IRS form and instructions. Farmers get the same report for Schedule F.
Before you hand it over
- Close the year. Reconcile every bank and card account to December 31 and enter the last bills. The monthly closing checklist works for the year too.
- Choose the basis your return uses, cash or accrual, and run the report the same way. See cash vs accrual.
- Clear the unmapped list. Every income and expense account should be on a line.
- Check 1099s against line 11. Contractors paid $2,000 or more in 2026 need a 1099-NEC. See 1099-NEC vs 1099-MISC.
- Agree wages with the W-2s. Line 26 should equal gross wages less any employment credits your preparer applies.
Source: IRS Instructions for Schedule C (2025). Check irs.gov for the 2026 form before filing.
Schedule C figures from your own books
Tag each income and expense account with its Schedule C line once, and AcboBooks totals the year by line, with the accounts behind every figure.
This article is general information, not tax, legal or accounting advice. Rules and dates change; check the official source or ask your accountant before acting.
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