Home / Blog / Schedule C line lookup
Schedule C line lookup

How do I split a mixed shopping order?

Updated October 10, 2026 路 Schedule C, Line 18
Short answer Schedule C, Line 18 Office expense

A mixed order of supplies and groceries belongs on Line 18, office expense.

Why line 18

Split the order line by line, not by guesswork. The office supplies go on the line that fits them, usually office expense on line 18, and the groceries are personal and go nowhere. Sales tax and any delivery or service fee are apportioned between the two groups in proportion to their dollar value, so a $60 business share of a $200 order carries 30 percent of the tax and the delivery charge. This is why the itemised receipt, rather than the card statement total, is the document that matters: a statement line reading a retailer's name and $200 supports nothing, while the receipt supports a specific number.

Stop looking up lines one at a time. ClaryBook totals your year into an IRS Schedule C worksheet in form order, Part I and Part II line by line, so a mixed order of supplies and groceries lands on Line 18 without you sorting it.

Start for free

What a mixed order of supplies and groceries is confused with

not deductible, not deductible
Household food, cleaning products and family items on the same receipt are personal, so the correct treatment of that part is an owner draw and no deduction.
Line 24b, deductible meals
Food bought for a business meal with a client is a meal on line 24b at the reduced percentage, which is a different line from the office supplies on the same receipt.
Line 22, supplies
Items consumed doing the work you bill for are supplies on line 22, so a cleaner's bleach and cloths from the same shop go there rather than on line 18.

Examples that belong on line 18

What does not belong here

What to keep

Keep the itemised receipt or the order detail page, mark the business lines, and note the business subtotal you deducted. For recurring mixed orders from the same retailer, splitting the orders instead is less work than splitting the receipts.

Other expenses on line 18

ExpenseLine
a desk lampSchedule C, Line 18
a paper shredderSchedule C, Line 18
a password manager subscriptionSchedule C, Line 18
a PO box rentalSchedule C, Line 18
a software subscriptionSchedule C, Line 18
a virtual mailboxSchedule C, Line 18
a work app subscriptionSchedule C, Line 18
accounting softwareSchedule C, Line 18
cloud storageSchedule C, Line 18
office coffeeSchedule C, Line 18
office stationerySchedule C, Line 18
postageSchedule C, Line 18

Related lookups

Sources

This page explains how Schedule C lines work. It is general information, not tax advice for your situation. If an expense is large or the answer turns on a fact about your business, confirm it with your tax preparer.


Looking for a different expense? The full Schedule C line lookup has every line from 8 to 27 with the expenses that belong on each, and Schedule C expense categories walks the whole form in order.

Stop looking up lines one at a time. ClaryBook totals your year into an IRS Schedule C worksheet in form order, Part I and Part II line by line, so a mixed order of supplies and groceries lands on Line 18 without you sorting it.

Start for free

Bookkeeping as easy as a text message 30 days free, no card

Start free trial