For the trades

Books and GST/HST for electricians, plumbers and HVAC

Service work lives or dies on the same day. Send the invoice before you leave the driveway, snap the parts receipt at the counter, and tax time takes care of itself.

No credit card needed.

A sample invoice on a phone, with 13% HST and Interac e-Transfer details

In the app today

Tax-ready all year, free

  • Invoices from your phone, with saved parts and service prices
  • Interac e-Transfer instructions on every invoice
  • Automatic reminders before and after the due date
  • Parts receipts snapped at the counter, sorted by T2125 line
  • Add the app to your phone's home screen
  • A running set-aside number for sales tax, income tax and CPP

What usually goes wrong

  • Invoices written up at the end of the week

    Parts get forgotten and hours get rounded down. Build the invoice on site from saved items and send it before the next call.

  • Receipts lost in the van

    Every parts receipt is a business expense, and once you are registered, the GST/HST on it can come back to you. Snap it when you pay.

  • Chasing small balances by hand

    Invoices turn overdue on their due date, and reminders go out on the schedule you set.

The tax reality for service trades

Service calls, labour and parts are generally taxable. The rate follows the place of supply, which for most residential and commercial service work is the customer's location, not where your shop is.

Because parts and labour can sometimes be treated differently, CollabNorth sets the tax per line rather than assuming one rate for the whole invoice.

Once your sales pass $30,000 over four calendar quarters, you have to register for GST/HST. CollabNorth warns you as you get close.

Coming for tax season 2027

At tax time: the Tax Ready pass

The worksheets are free to try during Early Access. The paid pass will be about $79 for sole proprietors and about $199 for corporations. It is not on sale yet. It gives you:

  • A GST/HST worksheet laid out on CRA's return lines
  • A T2125 package with your income and expenses by line
  • A receipt audit that points out what is missing before you claim

Worksheets and guides only. You file with CRA yourself.

Invoicing that does the tax for you

The CollabNorth invoice builder with Canadian tax lines calculated automatically
The invoice builder: header, items, tax and notes, review.
The customer-facing invoice page with Interac e-Transfer payment instructions
What your customer sees, with e-Transfer instructions.

Common questions

Can I invoice from my phone at the customer's house?
Yes. The invoice builder works on a phone, and you can send the invoice by email or share a link before you leave.
Can I save my usual service call and parts prices?
Yes. Save them once and add them to any invoice with the tax already set.
Do I charge tax on labour as well as parts?
Generally yes. Labour on a taxable supply is taxable. The rate follows the place of supply, and CollabNorth applies it line by line.

General information to help you keep your own records. It is not accounting, legal or tax advice. Confirm details with the Canada Revenue Agency or your accountant.

Start your books today

Free for one owner, with no invoice limit and no card. Try the sample business first if you want to look around.