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

Where do job materials go on Schedule C?

Updated October 10, 2026 路 Schedule C, Line 22
Short answer Schedule C, Line 22 Supplies

Materials a tradesperson consumes on a job belongs on Line 22, supplies.

Why line 22

Line 22 is for supplies you consume doing the work, and it is explicitly the supplies not included in Part III. A service trade that buys caulk, fasteners, abrasives, tape and adhesive, uses them up on jobs and keeps no stock to sell deducts them here in the year bought. The deciding question is whether the business produces or resells goods and accounts for inventory. If it does, the cost of anything that becomes part of a product sold belongs in Part III and reaches the return through cost of goods sold, not line 22. A plumber who stocks fixtures and bills them on to the customer is in the second group for those fixtures, even though the sealant and solder stay on line 22.

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 materials a tradesperson consumes on a job lands on Line 22 without you sorting it.

Start for free

What materials a tradesperson consumes on a job is confused with

Part III line 38, part iii line 38, materials and supplies
If you account for inventory and the material becomes part of what the customer buys, its cost is Part III materials and supplies rather than line 22.
Line 18, office expense
Office consumables such as printer ink, paper and postage are line 18, while materials consumed on the work you bill for are line 22.
Line 13, depreciation and section 179 expense deduction
A durable tool that lasts more than a year and costs more than the de minimis amount is a capital asset on line 13, not a supply.

Examples that belong on line 22

What does not belong here

The limit that applies

Incidental supplies can be deducted when bought rather than when used, provided you keep no inventory of them and the timing does not distort income.

What to keep

Keep the supplier receipts and, where you can, a note of the job each run of materials went to. Trade account statements that itemise by purchase order are stronger than a card line at a builders merchant.

Other expenses on line 22

ExpenseLine
a dog groomer's shampooSchedule C, Line 22
branded uniforms and workwearSchedule C, Line 22
cleaning chemicals and clothsSchedule C, Line 22
clinic and lab disposablesSchedule C, Line 22
memory cards for a cameraSchedule C, Line 22
packaging and shipping boxesSchedule C, Line 22
PPE, work gloves and safety bootsSchedule C, Line 22
salon color and product used on clientsSchedule C, Line 22
small tools under the de minimis thresholdSchedule C, Line 22

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 materials a tradesperson consumes on a job lands on Line 22 without you sorting it.

Start for free

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

Start free trial