Metal fabricators cut, bend, weld, and assemble steel, stainless, and aluminum into finished parts and structures. Customers include contractors, homeowners, restaurants, farms, and manufacturers who need railings, gates, brackets, frames, trailers, custom enclosures, and one-off or short-run parts. Invoices typically cover shop labor, materials, outside services like powder coating, and delivery or installation.
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Most fabricators combine shop labor billed by the hour with materials billed at cost plus a markup, often 15 to 40 percent depending on material and volume. Production or repeat parts are often priced per piece after the first job sets up the process, with a one-time setup or programming charge for CNC, laser, or press brake work. Larger custom jobs such as stair rails, gates, and structural steel are usually a flat price based on a quote, split into deposit, progress, and final payments. Outside services (galvanizing, powder coat, waterjet or laser cutting sent out, engineering stamps) are passed through with a handling markup. Field work and installation are billed at a higher hourly rate than shop work, plus travel time, mileage, and equipment such as lifts or welders. Many shops set a minimum charge to cover small repairs and quick jobs.
| Service | Priced | Typical range |
|---|---|---|
| Shop fabrication labor (cutting, fitting, welding) | per hour | $65-120 |
| Mobile welding and field repair | per hour | $85-150 |
| Installation labor (on-site, 2-person crew) | per hour | $100-180 |
| CNC plasma, laser, or press brake setup | flat fee per job | $50-200 |
| Steel or aluminum materials | cost plus markup | 15-40% over cost |
| Custom steel railing (fabricated, finished, installed) | per linear ft | $100-250 |
| Custom driveway or pedestrian gate | flat fee | $1,500-6,000 |
| Small repair or minimum shop charge | flat fee | $75-150 |
Typical US ranges. Rates vary by region, experience, and job size.
| Description | Qty | Rate | Amount |
|---|---|---|---|
| Fabricate steel handrail, 2" square tube frame with 1/2" pickets, welded and ground smooth (shop labor) | 22 hours | $85.00 | $1,870.00 |
| Materials: A500 square tube, flat bar, pickets, base plates, anchor hardware | 1 lot | $1,180.00 | $1,180.00 |
| Powder coat, satin black (outside vendor, includes 10% handling) | 1 lot | $715.00 | $715.00 |
| On-site installation, 2-person crew, includes core drilling and epoxy anchors | 8 hours | $140.00 | $1,120.00 |
| Truck and delivery, round trip | 40 miles | $1.50 | $60.00 |
| Total | $4,945.00 | ||
Notes: Deposit of $2,000 received on 3/4. Balance due within 15 days of installation. Late balances accrue 1.5% per month. Work warranted against weld defects for 12 months; powder coat warranty per vendor terms. Checks payable to the shop or pay by ACH or card (3% card fee).
Contractors and manufacturers usually cannot pay without a PO number, and tying the invoice to the original quote settles scope questions.
Steel prices swing, and customers may question the bill. Listing A36, 304 stainless, or 6061 aluminum and gauge shows what was used.
Shop and field rates differ, and itemizing them prevents disputes over blended hourly rates.
Galvanizing, powder coating, laser cutting, and engineering stamps come from third parties. Show them separately with any handling fee so they are not mistaken for shop labor.
Noting the drawing revision and finish called out protects you if the customer later claims the part was made to a different version.
Mill certs, weld procedure references, or inspection reports may be required on structural or code work. Noting what was delivered supports payment and warranty claims.
Rules vary by state on taxing fabricated goods, installation, and materials. Record whether tax was charged or an exemption certificate applies, and check your state rules.
For custom work, a deposit of 30 to 50 percent is common, especially because you buy material up front. Larger jobs often use progress billing at milestones such as material purchase, completion of shop fabrication, and installation. Commercial and contractor accounts commonly pay on net 15 or net 30 terms, while individuals are usually asked to pay the balance at pickup or installation. Late fees of 1 to 1.5 percent per month are common if stated on the quote and invoice. Accepted payment methods usually include checks, ACH, and cards, with some shops adding a card fee. Do not release finished parts until paid on small jobs, and on larger commercial jobs, ask about lien rights and notice deadlines in your state.
Material prices can change quickly. Limit quote validity to 15 or 30 days, and add a clause that lets you adjust the price if material costs change significantly before purchase.
Set the deposit at least equal to the cost of material and outside services so you are not financing the customer's job from your own pocket.
Time spent on CAD drawings, nesting, CNC programming, and fixturing is real work. List it as its own line so repeat orders can be priced without it.
Customers often alter dimensions or add features mid-job. Get written approval for each change and add it as a separate line on the invoice.
Quick repairs still take time for pickup, setup, cleanup, and consumables. A $75 to $150 minimum keeps small jobs from losing money.
Yes, most fabricators do. A markup of 15 to 40 percent is common because it covers purchasing, handling, cutoff waste, storage, and the risk of price changes. Smaller or specialty orders often carry a higher markup than large steel purchases.
Either build waste into the material price, usually 5 to 15 percent for sheet and plate, or bill the full stock lengths and sheets purchased. State which method you use on the quote so the invoice does not surprise the customer.
It depends on the state and on whether the work is a product sale, a repair, or real property improvement. Many states treat these differently, and exemptions for resale or manufacturing may apply. Check with your state revenue department or an accountant.
Generally you can keep goods in your possession until payment, especially if your terms say so. For installed work on real property, mechanics' lien rights may apply, and deadlines vary by state, so check local rules early.
Use a deposit invoice, then milestone invoices for material purchase, shop completion, and installation, with a final invoice for the balance. Each invoice should reference the original quote total and show what has already been paid.
Send a Metal Fabricator estimate for approval, then turn it into an invoice when the work is done.
Metal Fabricator estimate template