Welding Invoice Template
Download a welding invoice template to bill labor, materials, consumables, equipment, testing, change orders, retainage, and completed welding work.
Create Clear Invoices for Welding Work
A welding invoice gives specialty contractors a consistent way to bill completed welds, fabrication and fit-up labor, materials, consumables, equipment, access, testing, approved changes, retainage, and other project charges. Clear billing helps customers understand what work was completed, how quantities or hours were measured, and how the amount due was calculated.
This Welding Invoice Template is designed for welding contractors, mobile welding businesses, structural and miscellaneous steel subcontractors, pipe welding contractors, fabrication-and-installation companies, industrial maintenance contractors, project managers, office administrators, and construction business owners.
What Is a Welding Invoice?
A welding invoice is a customer-facing billing document used to request payment for completed welding and related work. Depending on the agreement, billing may be based on lump-sum progress, schedule-of-values percentages, weld quantities, linear feet, connections, assemblies, shop hours, field labor hours, equipment time, unit prices, approved time-and-material work, or change orders.
Typical billable work may include layout, fit-up, cutting, beveling, grinding, tack welding, structural welding, pipe welding, miscellaneous metals, field modifications, repair welding, preheat, welding consumables, access equipment, fire watch, testing support, mobilization, travel, and punch-list work.
When to Use This Template
- Billing structural steel field welding
- Billing miscellaneous metals or architectural metal welding
- Billing pipe welding by joint, weld, spool, or labor hour
- Billing shop fabrication and field installation together or separately
- Billing repair welding and field modifications
- Billing welding labor, fit-up, cutting, grinding, and preparation
- Billing electrodes, wire, filler rod, shielding gas, and other approved consumables
- Billing welding machines, generators, lifts, scaffolding, or other approved equipment
- Billing approved time-and-material or change-order work
- Submitting progress, final, or retainage-release invoices
Who Should Use This Template?
This template is suitable for welding subcontractors, mobile welders, structural steel contractors, miscellaneous metals contractors, pipe welding contractors, industrial maintenance contractors, fabrication-and-installation companies, project managers, office staff, and business owners.
It can be adapted for commercial construction, industrial facilities, structural modifications, equipment supports, handrails, stairs, platforms, pipe systems, shutdown work, repairs, tenant improvements, and other projects involving shop or field welding.
What a Welding Invoice Should Include
| Invoice Section | Purpose |
|---|---|
| Contractor and Customer Details | Identifies the welding contractor, customer, owner, general contractor, project, billing contact, and remittance information. |
| Invoice Information | Records invoice number, billing period, invoice date, due date, payment terms, contract or purchase-order number, and billing reference. |
| Welding Work | Tracks assemblies, weld type, process, joint type, size, length, quantity, material, position, location, and billable amount where applicable. |
| Fit-Up and Preparation | Tracks layout, cutting, beveling, grinding, cleaning, alignment, tack-up, joint preparation, and other separately billable preparation. |
| Labor | Tracks welders, fitters, helpers, fabricators, riggers, equipment operators, fire watch, supervision, regular time, and overtime. |
| Consumables and Materials | Tracks electrodes, wire, filler rod, shielding gas, flux, grinding discs, cutting consumables, plates, fittings, and other approved materials. |
| Equipment and Access | Tracks welding machines, generators, feeders, lifts, scaffolding, telehandlers, compressors, fume-control equipment, and other billable equipment. |
| Inspection and Testing | Tracks visual inspection support, NDT, reinspection, qualification testing, corrective work, and testing charges when contractually billable. |
| Change Orders and Extra Work | Separates added welds, changed joints, field-fit work, repairs, remobilization, access changes, and other approved work from the base scope. |
| Contract Billing | Summarizes original contract value, approved changes, previous billing, current billing, retainage, payments, credits, and remaining balance. |
| Supporting Documentation | References time sheets, daily logs, signed work tickets, welding records, inspection reports, equipment records, photos, and approved changes. |
How to Use the Template
- Enter the contractor, customer, project, billing contact, contract, subcontract, purchase-order, and remittance information.
- Assign a unique invoice number and confirm the billing period, invoice date, payment due date, and payment terms.
- List each schedule-of-values item, welding assembly, unit-price item, labor activity, equipment item, or approved change separately.
- Use the agreed billing basis for each item, such as lump sum, percent complete, weld, connection, linear foot, hour, day, or assembly.
- For quantity-based welding, identify weld type, joint, size, process, material, location, and completed quantity when required by the contract.
- For time-and-material work, record labor classifications, hours, equipment, consumables, materials, and signed authorization references.
- Reference inspection or testing records when those documents are required as billing support.
- List approved change-order work separately from base-contract work.
- Apply previous billing, retainage, credits, backcharges, taxes, and payments according to the project requirements.
- Review quantities, rates, backup documentation, and calculations before issuing the invoice.
A welding subcontractor submits a progress invoice for structural modifications at an occupied commercial facility. The invoice includes 42 completed field-welded connections, 176 linear feet of fillet weld, 14 reinforcement plates, 68 welder hours, 31 fitter hours, boom-lift rental, FCAW wire, shielding gas, and approved fire-watch labor. A separate change-order line covers eight added connection modifications discovered after demolition. The invoice references signed daily work tickets, weld-location records, equipment backup, and the approved change authorization.
Best Practices for Welding Invoices
- Match invoice descriptions to the contract, proposal, schedule of values, unit-price schedule, and approved changes.
- Use the billing basis established by the customer instead of changing between weld count, length, hours, and lump-sum progress without explanation.
- Identify shop welding and field welding separately when they are billed differently.
- Keep fit-up, cutting, grinding, and preparation separate when they are separately compensable.
- Reference weld locations, assemblies, drawings, or work-order numbers when detailed backup is required.
- Separate regular labor, overtime, fire watch, equipment, consumables, and material charges on time-and-material work.
- Use current approved rates for labor, equipment, materials, and unit-price work.
- Keep inspection, testing, corrective work, and reinspection charges distinguishable where contractually relevant.
- List approved change orders separately from original-contract billing.
- Preserve revised, disputed, credited, and voided invoice history.
Common Welding Invoice Mistakes
- Using vague descriptions such as “welding completed” without location, assembly, quantity, or billing basis
- Billing labor hours without the required signed work-ticket or time-record support
- Combining field welding, shop fabrication, and installation when they use different schedule values or rates
- Billing consumables or equipment without an approved contract or time-and-material basis
- Using unit prices that do not match the approved proposal or change order
- Billing repair or rework without clarifying whether it is customer-authorized extra work or contractor responsibility
- Billing unapproved connection changes or field modifications as base scope
- Applying the wrong retainage percentage or tax treatment
- Failing to deduct previous billing, credits, payments, or backcharges
- Issuing a final invoice before punch work, documentation, changes, and retainage are reconciled
Frequently Asked Questions
What should be included on a welding invoice?
Include contractor and customer information, project details, billing dates, payment terms, work descriptions, quantities or hours, agreed rates, materials, equipment, approved changes, taxes where applicable, retainage, previous billing, payments, and amount due.
How should welding work be billed?
Use the method established by the contract. Welding may be billed by lump-sum progress, schedule value, weld, connection, linear foot, labor hour, equipment hour, assembly, unit price, or approved time-and-material work.
Should weld type and process appear on the invoice?
Include them when they help support a quantity-based or detailed billing requirement. For lump-sum progress billing, a schedule-of-values description may be sufficient unless the customer requires additional detail.
How should welding consumables be invoiced?
When consumables are separately reimbursable, list the material or consumable type, quantity, unit, approved rate, and supporting purchase or usage documentation required by the agreement.
How should equipment be billed?
If equipment is separately billable, identify the equipment type, date, duration, approved hourly or daily rate, and applicable delivery or pickup charges. Common examples include welding machines, generators, boom lifts, scissor lifts, and telehandlers.
How should inspection and testing charges appear?
List inspection or testing separately when those costs are assigned to the welding contractor and are billable to the customer. Reference the applicable report, testing agency, work location, or approved change when required.
How should welding change orders be billed?
List approved change work separately and reference the applicable change-order or authorization number, work description, labor, equipment, material, unit price, or approved lump-sum value.
When should a final welding invoice be issued?
Issue the final invoice after billable work, approved changes, punch-list items, required inspection or closeout documentation, credits, and retainage conditions have been addressed according to the contract.
Keep Welding Billing Clear and Traceable
A structured welding invoice helps contractors connect completed welds, labor, materials, consumables, equipment, testing, approved changes, retainage, and payments with the billing requirements established for the project.
SimplySub helps contractors create and manage customer invoices and keep invoice information associated with customer and job records.