Schedule C expense categories, line by line

Schedule C expenses are the costs a sole proprietor or single-member LLC owner reports in Part II of Schedule C (Form 1040), and the form sorts them into fixed lines. The return for 2026 is filed in 2027, and the line list below is read from the IRS’s own drafts: the 2026 Schedule C (draft created May 15, 2026) and the 2026 Instructions for Schedule C (draft dated October 8, 2026). Drafts can still change before release; check the final form at IRS.gov/ScheduleC when it is posted.

Most lists of Schedule C categories stop at the form. The work that decides whether a return takes an afternoon or a week is upstream, in the books: whether each expense account in QuickBooks lands on one line, or whether the preparer has to split a “Miscellaneous” account across six. This post gives both, line by line, with the QuickBooks Online detail type Intuit maps to each line. Ledgerbrook keeps books and does not prepare or file returns.

What changed on Schedule C for 2026

Three changes in the 2026 draft affect how expenses are booked:

• Line 16 now has three parts. 16a is mortgage interest paid to banks, 16b is the business-use portion of vehicle loan interest (new), and 16c is other interest (new). The draft instructions say vehicle loan interest goes on line 16b “regardless of whether you use the business standard mileage rate or the actual costs.”
• The mileage rate changed mid-year. Business miles driven from January 1 to June 30, 2026 use 72.5 cents per mile, and miles from July 1 to December 31 use 76 cents (IRS standard mileage rates, IR-2026-29). A mileage log now needs the date of each trip, not only a yearly total, to split the miles.
• Meals for employees’ convenience. No deduction is allowed for expenses paid or incurred after 2025 for meals provided for the convenience of the employer or at an employer-operated eating facility, sole proprietors included (§274(o)). The 50% limit on business meals is unchanged.

The 1099 reporting threshold for contract labor and commissions also rose from $600 to $2,000 for payments made in 2026, which changes who needs a Form 1099-NEC, not what is deductible.

Schedule C expense categories: the full line list

The detail type column comes from Intuit’s table of where QuickBooks Online detail types appear on tax forms (Intuit help article, updated August 3, 2026). Where Intuit’s table still shows an older line number, the note column says so.

Line	Name on the form	What goes there	QuickBooks Online detail type	Note
8	Advertising	Ads, listings, signage, promotional printing	Advertising/Promotional
9	Car and truck expenses	Standard mileage, or the business share of gas, repairs, insurance, registration, parking and tolls	Gas and fuel, Vehicle insurance, Vehicle repairs, Vehicle registration, Parking and tolls (Other Expense type)	Intuit maps Vehicle loan interest here; for 2026 it belongs on 16b
10	Commissions and fees	Sales commissions, card processing and marketplace fees	Commissions and fees
11	Contract labor	Payments to independent contractors	Cost of labor	Not wages, and not the owner
12	Depletion	Natural resources (oil, gas, timber)	none listed	Rare outside extraction
13	Depreciation and section 179	From Form 4562	Depreciation (Other Expense type)	Comes from the asset register, not monthly entries
14	Employee benefit programs	Employee health plans, group-term life	Payroll expenses	Not the owner’s own health insurance
15	Insurance (other than health)	Liability, property, workers’ comp	Insurance
16a	Mortgage interest	Interest on business real property reported on Form 1098	none listed
16b	Vehicle loan interest	Business-use share of interest on a vehicle loan	Vehicle loan interest	New for 2026
16c	Other interest	Business loans, lines of credit, business credit cards	Interest paid	Intuit’s table shows 16b; for 2026 it is 16c
17	Legal and professional services	Accountants, attorneys, bookkeepers, business tax preparation	Legal & professional fees
18	Office expense	Office supplies and postage	Office/general administrative expenses, Shipping
19	Pension and profit-sharing plans	Contributions for employees	none listed	The owner’s own contributions go on Schedule 1
20a	Rent or lease: vehicles, machinery, equipment	Equipment and vehicle rentals and leases	Equipment rental
20b	Rent or lease: other business property	Office, shop or storage rent	Rent or lease of buildings
21	Repairs and maintenance	Incidental repairs that do not add value or prolong life	Repair maintenance	Improvements are capitalized
22	Supplies	Materials and supplies used up during the year	Supplies & materials	Not inventory, not in Part III
23	Taxes and licenses	Employer payroll taxes, business licenses, business property tax	Taxes paid, Payroll tax expenses	Not federal income tax or self-employment tax
24a	Travel	Lodging and transportation on overnight business travel	Travel	Meals go on 24b
24b	Deductible meals	The deductible share of business meals, usually 50%	Travel meals, Promotional meals	Enter the deductible amount, not the total
25	Utilities	Electric, gas, water, phone and internet for the business	Utilities, Communication	Not the base rate of the first phone line into a home
26	Wages	Employee salaries and wages, less employment credits	Payroll wage expenses	Never the owner’s draws
27a	Energy efficient commercial buildings deduction	§179D deduction, from Form 7205	none listed
27b	Other expenses	Total of Part V, line 48	Other business expenses, Dues & subscriptions, Bad debts	Intuit’s table shows 27a; since 2025 it is 27b
30	Business use of home	Form 8829 or the simplified method	Home office and related (Other Expense type)	Not on any line above

Cost of goods sold is not in Part II. Inventory purchases, direct labor and materials for products go through Part III (lines 33 to 42), and the result lands on line 4.

Part V: other expenses, and the $2,500 rule

Part V (line 48) is for “all ordinary and necessary business expenses not deducted elsewhere on Schedule C,” each listed by type and amount. The total goes on line 27b. Common entries:

• Software and subscriptions. The draft instructions name “technology and software tools” as other expenses, but note that most computer software that must be capitalized is depreciated or expensed under section 179 instead.
• Bank fees, dues to business and trade organizations, education related to the current business.
• Bad debts from sales or services that were already included in income and are known to be worthless. A cash-method business has no bad debt deduction for an unpaid invoice, because the income was never reported.
• Startup costs in the first year: up to $5,000 can be deducted, reduced by the amount total startup costs exceed $50,000, with the rest amortized over 180 months.
• De minimis safe harbor purchases.

What is the $2,500 expense rule?

It is the de minimis safe harbor for tangible property in Treas. Reg. §1.263(a)-1(f). A business without an applicable financial statement (most small businesses) can elect to deduct tangible property costing up to $2,500 per item or per invoice, instead of capitalizing and depreciating it, provided the same amounts are expensed in its books. The limit is $5,000 with an applicable financial statement, such as audited statements. The election is made each year with a statement attached to a timely filed return, and the instructions say to report these amounts as other expenses in Part V and not on any other line. A $1,900 laptop under the election is a Part V expense; a $3,200 one goes to Form 4562 and line 13.

Expenses that do not belong on Schedule C

These come out of a sole proprietor’s bank account and often get coded as expenses, but none of them is a Schedule C deduction:

Payment	Why it is not an expense	Where it goes in the books
Owner draws and personal transfers	Moving money to yourself is not a cost of the business	Equity: owner’s draw
Loan principal	Repaying a loan reduces a liability; only the interest is deductible	The loan liability account
Federal income tax and estimated tax payments	The instructions say do not deduct federal income taxes, including self-employment tax	Owner’s draw; see recording estimated tax payments
Equipment over the capitalization limit	Depreciated or expensed through Form 4562 and line 13	A fixed asset account
The owner’s health insurance	Not line 14 or 15; may be deductible on Schedule 1, line 17	Owner’s draw, or the equity detail type Intuit maps to Schedule 1
The owner’s retirement contributions	Go on Schedule 1, line 16, not line 19	Owner’s draw
Charitable contributions	Not a business expense for a sole proprietor	Owner’s draw; claimed, if at all, on the owner’s personal return
Fines and penalties paid to a government for breaking a law	Not deductible	An account outside the Schedule C mapping, so the preparer sees it
Personal, living and family expenses	Not deductible	Owner’s draw

One-half of self-employment tax is deductible, but on Schedule 1, line 15, not on Schedule C. The payment itself is still an owner’s draw in the books.

Who files Schedule C

A sole proprietor files Schedule C with Form 1040. So does the owner of a single-member domestic LLC that has not elected to be taxed as a corporation: the draft instructions say such an LLC “is not treated as a separate entity for federal income tax purposes.” A multi-member LLC generally files a partnership return (Form 1065) instead, and an LLC taxed as an S corporation files Form 1120-S. Statutory employees and qualified joint ventures of spouses also use Schedule C. The differences for each structure are in bookkeeping for an LLC.

What accounting method goes on Schedule C?

Line F asks whether the business uses the cash method, an accrual method, or another method. Any of them is allowed as long as it clearly reflects income. Cash method books report income when it is received and expenses when they are paid, which is what most sole proprietors use. A business that is not a small business taxpayer (average annual gross receipts over $32 million for the 3 prior years for 2026) must use accrual for inventory purchases and sales. Changing methods generally needs Form 3115 and a section 481(a) adjustment, so the method on last year’s return is the one to keep unless the CPA says otherwise. The books should be kept on the same method the return uses, or the preparer has to convert them.

How to set up the chart of accounts so the P&L maps to the form

The aim is that every expense account in QuickBooks Online lands on exactly one Schedule C line, and the profit and loss total for each group equals the number on the form. Four rules get there:

1. One account per line, at minimum. Sub-accounts are fine (separate Software and Bank Fees under Other Expenses, or Gas and Repairs under Car and Truck), as long as every sub-account rolls up to one line.
2. Pick the detail type from the table above. QuickBooks Online uses the detail type, not the account name, to place an account on the tax line. “Office Expense” with a detail type of Supplies & materials maps to line 22, whatever it is called.
3. Split meals at the account level. Keep business meals in their own account at 100% of cost. The preparer enters 50% on line 24b; booking half in QuickBooks loses the other half from the record.
4. Keep owner items out of expenses. The owner’s health insurance, retirement contributions and taxes go to equity, not to accounts with expense detail types, or they end up on line 14, 19 or 23. The retirement entries, and their deadlines, are in SEP IRA and solo 401(k) deadlines.

At year end, run the Profit and Loss for January 1 to December 31, 2026 and compare each line group with the draft form. Any account that does not fit one line, or any balance left in Uncategorized Expense or Ask My Accountant, is a question the preparer will ask in March.

Is there a Schedule C expenses worksheet?

The IRS does not publish one, and it does not need to: a profit and loss report built on the chart above is the worksheet. Export it to a spreadsheet with a column for the Schedule C line beside each account, total by line, and give that to the preparer along with the balance sheet.

Common questions about Schedule C expenses

What business expenses are not 100% deductible?

Business meals (generally 50%), the business-use share of a car or phone used partly for personal purposes, and business gifts (no more than $25 per recipient per year). Entertainment is not deductible at all. The limits and the record each one needs are in small business tax deductions.

What home expenses are tax deductible on Schedule C?

The business share of home expenses goes on line 30, either from Form 8829 or by the simplified method: $5 per square foot of space used regularly and exclusively for business, up to 300 square feet, so at most $1,500. Home expenses do not go on lines 8 to 27b.

What is the $20,000 instant asset write-off?

That is an Australian rule for small businesses, not a US one. The US equivalents are the $2,500 de minimis safe harbor above and the section 179 deduction, $2,560,000 for 2026, covered in Section 179 vs bonus depreciation.

What triggers an IRS audit on Schedule C?

The IRS does not publish its selection criteria, so there is no sourced list to give. What the books control is whether each line can be supported when asked: a receipt or invoice behind each expense, and no personal spending in business accounts. See audited without receipts for what the IRS accepts.

When the year is still sitting in the bank feed

A Schedule C mapped chart of accounts only helps if the transactions are in it. If the bank feed for 2026 is still unreviewed in December, or months of expenses went to one catch-all account, the work is a catch-up: each month entered, categorized to the lines above and reconciled to the statement, before anything is handed to the preparer.

$99per month of backlog20% off 6+ months

When to hand this off: if more than two months of 2026 are unreconciled, or the profit and loss has expense accounts that do not fit one Schedule C line, the preparer will either reclassify by hand or file from estimates. A free file review shows how far behind the year is and fixes the price first. What the work covers is on the catch-up bookkeeping page.