How to Prepare a Contractor Invoice on Your Phone
A phone invoice works when the setup is done once and the job details are captured as they happen: your business details saved, the customer's name and address collected at booking, parts noted as you fit them, and the finished PDF shared before you leave. Nothing about it needs an office, an app install, or an account — it needs a small system, which is this guide.
The one-time setup (five minutes, at home)
- Save your From block. Open the maker, enter your business name, address, and contact once, and tick the remember box — it is stored in your phone's browser, no account involved, and it is there at every job.
- Set your tax rate if you charge one, and save that too. One less field at the doorstep.
- Pick your numbering and stick to it — sequential from wherever you start. Solo operators need nothing fancier; crews should read the numbering note in the FAQ about ranges.
- Decide your payment-details text — bank details or payment handle, written once, checked character by character, kept in your notes app to paste. It goes on every invoice.
The at-the-job routine
- At booking: customer name, property address, and a one-line job description go in your notes. This is the Bill-to block, captured when the customer is motivated to spell things correctly.
- During the job: note parts as you fit them — name, spec, price — and start/finish times if you bill time. Memory at 6pm is not a system; a note at 11am is.
- At completion: open the maker, lines first (labor, then parts — the labor-and-materials guide shows the format), call-out fee if it applies, total checked once, due date set.
- Before you leave: download the PDF and share it on the spot. The driveway rule explains why this timing is worth money.
- Cost: $0. InvoiceNow is free — every feature, no paid plans.
- Signup: none. No account, no app install — it runs in your phone's browser.
- Watermark: none — your business name is the only brand on the PDF.
- Records: nothing is stored on the site; the PDF on your phone is your copy.
The whole routine replaces the two failure modes of trade paperwork: the notebook page reconstructed at the weekend (details softened, a part forgotten) and the office invoice created days later (customer surprised, payment slower). Run the contractor checklist against your first few phone invoices until the routine is automatic.
Signal, gloves, and other field realities
Phone invoicing has to survive the real conditions of a job, so design for them. Basements and plant rooms eat signal — the maker runs in your browser and the PDF is generated on your phone, so a weak connection slows page loads but does not strand a finished document; if a property is a dead zone, build the invoice at the van where signal returns, still before you leave. Your hands are not clean — that is what voice notes are for: dictate the parts and times as you work (“new cartridge fitted, 20 minutes”) and type from the recording at completion, rather than thumbing a screen with sealant on your fingers. The customer is watching the total form — narrate the lines as you add them (“that is the valve, that line is the labor”), and the document stops being a reveal. The system survives because none of it depends on the perfect moment — it degrades gracefully to the van, the voice note, and the two quiet minutes before you drive off.