Free Contractor Invoice Generator

A contractor invoice generator turns a finished job into a clear, numbered PDF: labour on one line, materials on another, permits and disposal after that, any deposit you already took, the tax, the balance and exactly how to pay. The tool above does all of that for builders, electricians, plumbers, tilers and independent contractors who bill by the hour, so it works as a plumbing invoice generator or an electrician invoice template with no setup. You fill in the lines, the totals are worked out, and you download the PDF with no watermark.

I've invoiced hundreds of clients, and the jobs that paid late almost never had a problem with the work. They had a problem with the invoice. One lump sum with no breakdown, a materials figure the homeowner couldn't check, no mention of the deposit, no due date. This guide fixes that. You'll get five worked examples you can load into the tool, a labour-plus-materials calculation with markup, a progress billing schedule with retainage, copy-paste wording, and country notes for the US, UK, EU, Canada, Australia, India and Bangladesh.

What is a contractor invoice generator?

A contractor invoice generator is a tool that builds an invoice for trade or contract work from your details, the client's details and a list of labour, materials and extras, then calculates the totals and exports a PDF. It differs from a general generator because contract work has more moving parts than a product sale.

The word "contractor" means two different people, and most pages only serve one of them:

• Construction and trade contractors: general contractors, electricians, plumbers, roofers, tilers, painters and handymen. They bill jobs, with labour, materials, markup, permits, deposits and sometimes progress draws.
• Independent contractors: self-employed developers, designers, engineers and consultants who work for a business but aren't on payroll. In the US they're often called 1099 contractors, and a 1099 contractor invoice bills hours or deliverables against a contract or purchase order.

Invoice Studio handles both. Each line has its own quantity, rate, tax and discount, so labour can carry sales tax or HST while a permit passed through at cost carries none. You can add your signature and the client's, print payment methods under How to pay, and pick from 28 designs. A free account adds saved clients, automatic numbering and payment tracking. If you mostly bill creative or knowledge work, the invoice generator for freelancers has examples closer to yours.

What should a contractor invoice include?

A contractor invoice should include the word "Invoice", a unique number, the issue and due dates, your business name, address and licence or tax number, the client's name and billing address, the job site address, separate lines for labour and materials, any extras, tax, deposits received, the balance due, payment terms and how to pay.

Here's the checklist I run on every job invoice before it leaves the office:

1. Your legal business name, address, phone and email, plus your contractor licence or registration number where your state, province or city requires one.
2. Tax IDs if you have them: EIN, VAT number, GST/HST number, ABN or GSTIN.
3. The client: name, company if there is one, and billing address.
4. The job site address, if it's different from the billing address.
5. Invoice number in a sequence you never reuse, such as JOB-2026-001, and the contract, PO or estimate number it relates to.
6. Dates: issue date, the dates the work was done, and the due date written out.
7. Labour: hours times rate, or a day rate, with a short description of the work.
8. Materials: an itemised list or one line at cost plus markup, with receipts available.
9. Extras: permits, inspections, dumpster or skip hire, equipment rental and travel.
10. Tax per line, then the subtotal, tax total and total.
11. Deposit or earlier payments received, and the balance due.
12. Payment terms and How to pay, with the invoice number as the payment reference.

For a deeper walk through every field, see how to make an invoice. If you'd rather start from a layout, our contractor invoice template guide has construction invoice template samples for more trades, including trucking and lawn care.

How do you write a labor and materials invoice with markup?

Put labour on its own line as hours times your rate, then materials on a second line at cost plus your markup, then each extra cost such as a permit or dumpster on its own line. Show the material cost in the line details so the client can match it to receipts.

Here's the bathroom remodel from the first example on this page, worked through. Brennan Home Renovation in Columbus, Ohio quoted a fixed scope, took a $2,000 deposit, and billed the rest on completion.

Three things to notice. First, the markup is visible. Hide it inside one materials figure and a client will eventually find the tile online for less and ask why. Writing "cost $2,180 + 10%" answers the question before it's asked. Second, the permit is billed at cost. It's a pass-through, and marking up a government fee looks petty. Third, the deposit is named with its date and invoice number, so the client's records line up with yours.

Markup is not margin. A 10% markup on $2,180 adds $218. If you want a 10% margin on the sale price, you need to charge $2,422, which is a markup of about 11.1%. Most people get this wrong when they price from a target margin.

In the generator, enter the deposit in the notes, as the example does, and record it as a payment once you're signed in. Invoice Studio tracks partial payments and shows the invoice as part-paid, so you never chase money that's already in the bank.

Construction contractor vs independent contractor: which invoice do you need?

If you bill a job at a property, you need a construction-style invoice with labour, materials, the job site and any deposit. If you bill a business for your time or deliverables under a contract, you need an independent contractor invoice with hours, the contract or PO reference and your tax details. The table shows how they differ.

For a US independent contractor, the client will usually ask for a Form W-9 before the first payment, so they can report what they paid you on Form 1099-NEC. Put "W-9 on file" in your notes once you've sent it, and AP won't hold your invoice waiting for one. The IRS also explains how it decides whether someone is an independent contractor or an employee.

The Texas example bills 64 hours at $95 plus a $400 flat on-call fee: $6,080 plus $400 is $6,480, Net 15, with the PO number and contract date in the notes. That's all an AP team needs to approve it on the first pass.

Progress billing invoice: how do deposits, draws and retainage work?

A deposit is money you invoice before work starts, usually to cover materials. Progress billing means invoicing in stages as the job reaches agreed milestones. Retainage is a percentage the client holds back from each progress payment until the job is finished and accepted, often 5% to 10% on commercial work.

Deposits first. For homeowner jobs, 10% to 50% is common, depending on how much you spend on materials up front. Check your local rules: California, for example, caps home improvement down payments at 10% of the contract price or $1,000, whichever is less. Send the deposit as its own invoice with one line, "Deposit, 30% of contract dated 29 Sep", and don't order custom items until it clears.

On larger jobs, progress billing keeps your cash flow alive. Here's a worked schedule for an $84,000 home addition with three draws and 10% retainage:

Each progress invoice should show the contract total, what's been billed to date, the retainage held so far and the amount payable now. In the generator, bill the milestone as one line, such as "Draw 2: foundation and framing complete, 35% of $84,000", and put the retainage and billed-to-date figures in the notes.

Estimate to invoice: how do you convert a signed quote?

Build the estimate with the same line items you'll invoice, get the client to sign it, then switch the document to an invoice when the work is done and update the quantities to what actually happened. Any extra work goes on as a separate, approved change order line.

Here's how I do it in Invoice Studio:

1. Create an estimate or quote. Choose the estimate or quote document type, list labour, materials and extras, and add a validity line such as "Prices valid for 30 days". The PDF is free; saving estimates and converting them in your account needs Pro.
2. Get it signed. Add your signature and the client's. A signed estimate is the simplest evidence that the price was agreed, and an invoice with signature lines does the same job for completion.
3. Invoice the deposit as a short, separate invoice.
4. When the job is done, create the invoice from the same lines. Change the document type to invoice, set the real labour hours and material cost, and give it a new invoice number.
5. Add change orders as their own lines: "Change order 2: add recessed lighting, approved by text 14 Oct, 1 × $640". Never fold extras into the labour figure, because that's the line clients question.
6. Show the deposit received and the balance due, then download the PDF or email it.

If you'd rather start from a design, browse the free invoice templates. Corporate, Classic and Poster all read well on a phone.

Contractor payment terms: due on completion, Net 15 or Net 30?

Use due on completion or Net 15 for homeowner jobs, and follow the contract's pay schedule for commercial and subcontract work, which often runs Net 30. Whatever you choose, agree it in writing before work starts and print the actual due date on the invoice.

• Due on completion: best for small residential jobs. Walk the client through the work and get paid that day.
• Net 15: a good default for larger residential jobs and independent contractors. Fifteen days is long enough for a bank transfer and short enough that you're not financing the client.
• Net 30: normal for commercial clients and main contractors. I'd only accept it with a deposit or progress draws. Our guide to Net 30 payment terms shows how to calculate the due date and when to push back.
• Pay-when-paid or a set schedule: common for subcontractors. Read the clause carefully, because some places limit or ban pay-when-paid terms.

Late fees only work if they're agreed in the contract or set by law. In the UK, businesses can claim statutory interest and compensation on late commercial payments, at 8% above the Bank of England base rate. In the US, it depends on your contract and state law. When an invoice goes overdue, a polite reminder on day one usually works. With an account, Invoice Studio sends a reminder email in one click and marks the invoice overdue on your dashboard; see invoice payment reminders for wording.

Copy-paste wording for contractor invoices

Good invoice wording answers the client's question before they have to call. Paste these into the notes or line details and edit the numbers.

Materials at cost plus markup (line details):

Materials per attached list. Cost $2,180.00 plus 10% markup for sourcing, collection and handling. Receipts available on request.

Deposit invoice (notes):

Deposit of 30% under our contract dated 29 September 2026. Materials will be ordered when this payment clears. The balance will be invoiced on completion.

Final invoice with deposit (notes):

Total for the work: $6,423.00. Deposit of $2,000.00 received on 1 October (invoice GC-2026-109). Balance due on completion: $4,423.00.

Progress draw with retainage (notes):

Draw 2 of 4. Contract total $84,000.00. Billed to date $37,800.00. Retainage held at 10%: $2,940.00 on this draw, $2,940.00 to date. Payable now: $26,460.00.

Change order line:

Change order 2: add four recessed lights in hallway. Approved by Karen Liu by text on 14 October 2026.

Completion sign-off (above the client signature):

I confirm the work described on this invoice has been completed to my satisfaction.

Polite overdue email (subject: Invoice VE-0457, C$2,892.90, due 20 November):

Hi Priya, a quick note that invoice VE-0457 for the panel upgrade was due on 20 November. I've attached it again. You can pay by e-Transfer to billing@voltelectric.ca. If it's already on its way, thank you and please ignore this.

Contractor invoice rules by country

The core fields are the same everywhere, but tax and withholding rules for contractors change a lot by country, and sometimes by state or province. These notes are a starting point as of November 2026; check with your tax authority or accountant before relying on them.

United States

Sales tax on construction varies by state. In many states a contractor improving real property pays sales tax on materials when buying them and doesn't charge it to the customer, while repair labour or separately stated materials may be taxable elsewhere. Look up your state's rules for contractors. Licence numbers are required on invoices and contracts in some states. Independent contractors should send a W-9 and track 1099-NEC reporting; the reporting threshold rose from $600 to $2,000 for payments made from 2026, so check the IRS page above for the current figure. Lien and notice deadlines are state-specific, so keep dated invoices for every stage, and collect a signed lien waiver with each progress payment when the job calls for one.

United Kingdom

Under the Construction Industry Scheme, a contractor deducts 20% from a registered subcontractor's labour (30% if not registered, 0% with gross payment status). The deduction applies to labour only, not materials or VAT, which is why a CIS invoice must keep labour and materials on separate lines. Where a VAT-registered subcontractor supplies a VAT-registered contractor under CIS, the domestic reverse charge usually applies: you don't charge VAT, you state that the reverse charge applies, and you show the VAT the customer must account for. It doesn't apply when you bill the end user, such as a homeowner. The Stockport plastering example shows all of this: £3,040 total, £608 VAT for the customer to account for, £480 CIS deduction and £2,560 payable.

European Union

The EU VAT Directive lets member states apply a domestic reverse charge to construction work, and several do, including Germany and the Netherlands. Where it applies, the invoice carries no VAT and a reverse charge note. Rules and wording differ by country, so check your national tax authority.

Canada

Register for GST/HST once your taxable supplies pass C$30,000 over four quarters, then show your GST/HST number and the tax. Ontario's HST is 13%, as in the Aurora electrician example: C$2,330 of labour and parts plus C$302.90 HST, plus the C$260 ESA permit fee passed through with no tax, for C$2,892.90. Ontario's Construction Act also sets a 10% holdback and prompt payment deadlines that start from a "proper invoice", so make sure yours meets the Act's content rules on covered projects.

Australia

Show your ABN on every invoice. If you don't, a business paying you may have to withhold tax at the top rate. Once registered for GST (from A$75,000 turnover), label it "Tax invoice" and show GST at 10%, as in the Queensland tiling example: A$2,470 plus A$247 GST, A$2,717 in total. Building and construction businesses report contractor payments to the ATO each year, so clients will want your ABN and details right. Each state also has security of payment laws that can treat an invoice as a payment claim, which gives you a fast route to recover unpaid amounts.

India

GST on works contracts is usually 18%, with lower rates for some specified works, so check the current rate notification. A GST tax invoice needs your GSTIN, the client's GSTIN for B2B work, the SAC code and the place of supply. Clients deduct TDS on contractor payments, generally 1% for individuals and HUFs and 2% for others, under the rules carried into the Income-tax Act 2025 from April 2026.

Bangladesh

Government bodies, companies and other withholding entities usually deduct VAT and income tax at source from contractor bills, at rates set by the National Board of Revenue that change with the budget. Show your BIN and TIN on the invoice, and ask for the deduction certificate so you can claim the credit. Invoice Studio prints bKash, Nagad and bank details under How to pay.

Which contractor invoice mistakes delay payment?

The mistakes that delay contractor payments most are a single lump-sum line, a missing job address or PO number, unapproved extras, no due date and no clear way to pay. Each one gives the client a reason to wait.

1. One lump sum. "Bathroom: $6,423" invites a phone call. Four lines don't.
2. Hidden markup. It looks like you're hiding something. Show it.
3. Extras nobody approved. Get a text or email approval for every change order and quote it on the line.
4. No job site address or PO. Property managers and AP teams can't match the invoice, so it sits.
5. Forgetting the deposit. Billing the full amount again makes you look careless and delays the balance while it's sorted out.
6. Wrong tax treatment. Charging VAT under the reverse charge, or missing HST, means a credit note and a new invoice.
7. No payment details. If the client has to ask how to pay you, you've added a week.
8. Invoicing late. Send it the day you finish.

For a handyman invoice on regular service visits, a maintenance contract or monthly cleaning, set up recurring invoices so the bill goes out on the same day every month without you remembering.

Contractor invoice generator vs field service software: which do you need?

A contractor invoice generator is enough if you run a small crew and need professional invoices, estimates and payment tracking. Field service software makes sense when you need dispatching, scheduling, GPS tracking and job costing across many technicians, and it usually costs far more each month.

Most small crews use a fraction of a field service suite and pay for all of it. As your crew grows, small business invoicing software with saved clients, reports and payment tracking is usually the next step, long before you need dispatching. Invoice Studio's Free plan covers the PDF invoice, and paid plans start at $3 a month for emailing invoices and reminders. For more on choosing tools, read our free invoice app guide or browse more guides on the Invoice Studio blog.

Be clear about what Invoice Studio doesn't do today: there's no online card checkout and no client portal. Payment methods, such as bank transfer, card, Stripe, PayPal, Wise or check instructions, are printed on the invoice instead, and most contractor clients pay that way anyway.

Start with the job you finished this week. Load the closest example above, swap in your hours, materials and deposit, add your signature and download the PDF. For a quick one-off, the free invoice generator works too. Save the client in a free account, and the next invoice takes half the time. Pricing for every plan is on the pricing page.