An invoice is not paperwork. It is the last step of the sale, and a surprising share of late payments are caused by the invoice itself — missing a PO number, arriving three weeks after the work, or asking someone to go and find their chequebook.
What every contractor invoice needs
- A unique invoice number. Sequential. This is the first thing a bookkeeper asks for.
- Your business name, licence number and contact details. Licence number is not optional in most trades, and it quietly signals you are legitimate.
- The customer’s name and the job address — which are often not the same address, especially for rentals and property managers.
- The work, in their language. “Replaced 40-gallon gas water heater, hauled away old unit” beats “labour and materials per quote.”
- Dates. Work completed and invoice issued.
- Deposits already paid, shown as a deduction, with the balance in bold.
- Due date as a date, not “net 30.” People pay dates, not terms.
- How to pay, with the easiest option first.
Send it the day the job finishes
This is the whole game. An invoice sent while the customer can still see the new unit gets paid faster than an identical invoice sent eleven days later, when the pleasure has worn off and a credit card bill has arrived. Same document, different outcome.
If you invoice weekly in a batch on Sunday night, you are adding an average of three and a half days to every single payment, for free.
Make paying it a tap
Every extra step between reading the invoice and paying it loses you days. A link they can pay on their phone, on the sofa, the evening they get it, is the difference between getting paid in two days and getting paid in two weeks — and it removes the follow-up conversation entirely.
Common mistakes
- No due date, just “payment on receipt.” Receipt of what, by when?
- Not matching the invoice to the estimate. If the numbers differ and nothing explains why, you have invited a phone call instead of a payment.
- Burying the balance owed under a wall of line items.
- Sending it to whoever was on site, rather than whoever pays the bills.
When the work changed
If the job grew, the invoice is not the place the customer should first learn about it. That is a change order, signed before the extra work happened. An invoice that silently exceeds the estimate is the single most common cause of a dispute.
Make the invoice come from the estimate
In Toolbelt an accepted estimate becomes an invoice in one tap — same line items, same branding, deposit already deducted, with a pay button wired to your own Stripe. Optionally it creates and sends itself the moment the customer accepts. Three free estimates, no card.
Next: a contractor invoice template, payment terms that protect cash flow, and how to get paid faster.