Invoicing Software for Alberta Accounting Firms

How does invoicing software work for firms in Alberta?

The CRA administers the GST. Alberta levies no provincial sales tax. Alberta is the only province with no provincial sales tax, so Alberta clients file GST returns only.

An Alberta firm bills its own fees with 5% GST and nothing else — no provincial tax on the invoice and no second remittance account. The friction in billing here is never the tax; it is scope that was agreed verbally.

Managing invoicing software across a client book in Alberta

A firm's billing problem starts before the invoice: unless scope and price were agreed in writing, every bill is a negotiation.

A four-person Calgary practice serving oilfield-services corporations tracks two returns per corporate client: the federal T2 and the Alberta AT1. Sales tax is the easy part — GST only, one cadence, no PST registration. The compliance weight sits in the doubled corporate filing and in year-ends that cluster around the fiscal calendars of the operators these clients contract to.

Do Alberta clients file a separate provincial return?

Alberta administers its own corporate income tax. A corporation with a permanent establishment in Alberta files the federal T2 with the CRA and a separate Alberta AT1 return with Alberta Tax and Revenue Administration.

The CRA administers Alberta personal income tax through the federal T1.

It also belongs in the fee schedule. Where a client's work includes both the federal return and the AT1, the engagement letter should price both lines explicitly — an unpriced second filing is the most common quiet write-off in Alberta practices.

What is different about running a practice in Alberta?

Four things a firm working Alberta files should be able to state without looking them up. Each is verified against a primary source, linked at the foot of this page.

CPA Alberta is the provincial body; 137,182 of Alberta's 139,514 employer businesses were small businesses as of December 2024.

• No provincial sales tax — Alberta is the only province without a provincial sales tax. Alberta businesses charge 5% GST and file a single sales-tax return with the CRA — there is no PST, RST or QST registration to track.
• Lowest general corporate rate in Canada — Alberta's general corporate income tax rate is 8%, the lowest provincial general rate in Canada, and its small-business rate is 2% on the first $500,000 of active business income.
• A second corporate return: the AT1 — Alberta Tax and Revenue Administration administers the Alberta Corporate Tax Act. Corporations with a permanent establishment in Alberta must file an Alberta AT1 return in addition to the federal T2 — one of only two provinces (with Quebec) that require a separate corporate filing.
• Fourth-largest business base — Alberta had 139,514 employer businesses as of December 2024, of which 137,182 were small businesses.

Which CRA deadlines apply?

These rules are federal and apply in every province and territory. Where a due date falls on a weekend or public holiday, the CRA treats the next business day as on time — compute the shifted date each year rather than carrying the calendar forward.

How SpidNums handles it

SpidNums models the firm as clients, services and work. Assigning a typed service to an Alberta client is what generates the recurring projects, the stages and the reminders — the cadence is recorded once rather than remembered each period.

Every open obligation is then ranked by how close its due date sits and coloured accordingly, so the morning question — what is late, what is close, what is fine — is answered by looking.

• Services catalogue with per-service pricing lines
• Engagement letters built from assigned services or prior-year history
• Firm letterhead and branding on every client-facing document
• Client e-signature by type, draw or upload on a no-login page
• Signed PDF stored on the client record
• Annual renewal prompts when scope changes

Where this goes wrong

Billing failures start upstream of the invoice. By the time a fee is being argued about, the mistake was made months earlier.

• The engagement letter is a copy of last year's, so this year's expanded scope is unpriced.
• A client is asked to create an account to sign, and simply does not sign.
• Out-of-scope work is agreed by email and never makes it into the fee schedule.
• Renewals are not prompted, so a three-year-old letter is the only signed scope on file.

What SpidNums does not do

SpidNums is practice management with an invoicing workflow, not an accounts-receivable ledger. It produces the priced, signed engagement that your billing runs from — it does not process payments or age receivables.

If your firm already runs a tracking system it trusts, the honest answer is that you do not need this one. The pages on this site are written to help you decide, not to pretend every firm has the same problem.