Tax Software for Canadian Accounting Firms

What is tax practice software, and how is it different from tax preparation software?

Tax preparation software computes and transmits the return — TaxCycle, ProFile, Taxprep, DT Max. Tax practice software runs the engagement around it: who the client is, what was agreed, which documents are missing, which stage the file is at, who owns it, and both of the deadlines it carries.

Firms lose returns to process, not to preparation. A file waiting on one slip looks identical on a desk to a file being actively worked, and a corporate year-end six months back has a filing date nobody is watching. SpidNums exists for that gap and does not attempt to be the tax engine.

How should a firm sequence T1 season?

Backwards from the two dates that matter. Most individuals file and pay by April 30. Self-employed individuals and their spouses or common-law partners have until June 15 to file, but any balance owing is still due April 30 — which is why the June extension is a trap rather than a gift for a client who owes money.

A workable pipeline opens the file with a document request, tracks the chase as a visible stage, then moves through prep, review and sign-off with different owners at the prep and review steps. What makes it hold up in April is that a stalled file ages into a colour instead of sitting quietly in a pile.

How do firms track staggered corporate year-ends?

By storing the fiscal year-end on the client record and generating the work from it. A corporation chooses its year-end on its first T2, any date may be chosen, and the fiscal period may not exceed 53 weeks — so a firm with eighty corporate clients has year-ends scattered across all twelve months and a T2 always in flight.

The trigger that works is year-end minus one month: open the file, request the records, and book the prep and review stages before the client has finished the year they are being asked about. The six-month filing date and the earlier balance-due date then sit on the same file as two separate checkpoints.

What happens when a return is filed late?

The base late-filing penalty is 5% of the balance owing plus 1% for each full month the return is late, to a maximum of 12 months. Where a late-filing penalty applied in any of the three prior years and the CRA issued a demand to file, it doubles: 10% plus 2% per month for up to 20 months. Compound daily interest runs on the unpaid balance from the payment date, not the filing date.

That structure is why the payment clock deserves its own reminder. A return filed on time against an unpaid balance still accrues interest, and a firm that tracked only the filing date will have told the client the wrong thing.

Which provinces add a second corporate return?

Two. Quebec corporations file the CO-17 with Revenu Québec alongside the federal T2, and Quebec individuals file the TP-1 with Revenu Québec alongside the T1 — the only province where individuals file separately with both administrations. Alberta corporations file the AT1 with Alberta Tax and Revenue Administration alongside the T2.

Everywhere else, the CRA collects provincial corporate tax through the T2 itself. A firm with clients in Quebec or Alberta should model those as separate obligations with their own owners rather than as a step inside the federal file.

Why does the document chase decide the season?

Because it is the only stage where the firm is not in control, and it is the stage most firms do not track. A return waiting on one slip and a return being actively prepared occupy the same physical and mental space, so the waiting file is discovered when someone goes looking — usually in the last week.

Making the chase a visible stage changes the arithmetic. The file enters the chase stage with a date, ages while it sits there, and appears as a colour when it has been waiting too long. The firm then chases on a schedule rather than on a memory, and the client who never responds is escalated in February instead of on April 28.

The related discipline is communication cadence: a document request when the file opens, a warning as the deadline approaches, a note at each stage change, and a summary at completion. Four scheduled messages replace an unpredictable stream of inbound 'any update?' emails, and the firm sets the timing rather than the client.

Where do engagement letters fit in a tax practice?

Before the work opens, which in a tax practice means before January. Provincial CPA codes of professional conduct require members in public practice to document the terms of an engagement in writing, and the practical value is the same as the professional one: a signed scope is the only thing that ends a scope argument.

The mechanism that gets letters back is removing the friction. A letter built from the firm's services catalogue, sent as a branded link, signed by typing or drawing on a page that requires no account, and stored on the client record — that comes back. A Word document attached to an email, printed, signed and scanned mostly does not.

What SpidNums is not

SpidNums does not prepare returns, does not compute tax, and does not EFILE. There is no T1 or T2 engine in it and there is no plan to build one — the Canadian tax engines are mature and firms are right to keep them.

What SpidNums does is hold the engagement: the signed letter, the client record, the document chase, the stages, the assignments, and the two deadline clocks. If your firm already has a tracking system it trusts, you do not need this.